# Seattle (SEA) to Porto (OPO) Lowest published fares for the months ahead: $822 round trip, Axel-exclusive, Air Canada / United Airlines, 2 stops, Nov 20–23, 2026; $532 one way, Axel-exclusive, Air Canada, 2 stops, Nov 24, 2026; 144 priced flights on 72 exact dates, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply. **Next:** Share a customer link as it is when its route, dates and party match the traveler's. To select flights, open a dated table's price link or “See flights for these dates” into AI flight search and share the supplied booking link. Search links are for you; share customer and booking links. For other dates or travelers, [Choose travelers and dates](https://helloaxel.com/en/f/start/from/sea/to/opo/step/travelers) using their own trip details. ### Seattle (SEA) to Porto (OPO): November 2026 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Nov 19, 2026 – Nov 22, 2026 · 3 nights · [Compare return dates departing Nov 19, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-19) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-19-2026/return/november-22-2026/adults/1/cabin/economy) | | Nov 19, 2026 – Nov 22, 2026 · 3 nights · [Compare return dates departing Nov 19, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-19) | Air Canada / Air France | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-19-2026/return/november-22-2026/adults/1/cabin/economy) | | Nov 20, 2026 – Nov 23, 2026 · 3 nights · [Compare return dates departing Nov 20, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-20) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $821.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-20-2026/return/november-23-2026/adults/1/cabin/economy) | | Nov 20, 2026 – Nov 23, 2026 · 3 nights · [Compare return dates departing Nov 20, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-20) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-20-2026/return/november-23-2026/adults/1/cabin/economy) | | Nov 21, 2026 – Nov 28, 2026 · 7 nights · [Compare return dates departing Nov 21, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-21) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-21-2026/return/november-28-2026/adults/1/cabin/economy) | | Nov 21, 2026 – Nov 28, 2026 · 7 nights · [Compare return dates departing Nov 21, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-21) | Air Canada / Air France | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-21-2026/return/november-28-2026/adults/1/cabin/economy) | | Nov 24, 2026 · One way · [Compare return dates departing Nov 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-24) | Air Canada | Up to 2 stops each way | [Axel-exclusive $532.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-24-2026/trip/one-way/adults/1/cabin/economy) | | Nov 24, 2026 · One way · [Compare return dates departing Nov 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-24) | United Airlines | Up to 2 stops each way | [Axel-exclusive $551.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-24-2026/trip/one-way/adults/1/cabin/economy) | | Nov 24, 2026 – Nov 29, 2026 · 5 nights · [Compare return dates departing Nov 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-24) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-24-2026/return/november-29-2026/adults/1/cabin/economy) | | Nov 24, 2026 – Nov 29, 2026 · 5 nights · [Compare return dates departing Nov 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-24) | Air Canada / Air France | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-24-2026/return/november-29-2026/adults/1/cabin/economy) | | Nov 26, 2026 – Nov 29, 2026 · 3 nights · [Compare return dates departing Nov 26, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-26) | Air Canada / Air France | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-26-2026/return/november-29-2026/adults/1/cabin/economy) | | Nov 26, 2026 – Nov 29, 2026 · 3 nights · [Compare return dates departing Nov 26, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-26) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-26-2026/return/november-29-2026/adults/1/cabin/economy) | | Nov 27, 2026 – Nov 30, 2026 · 3 nights · [Compare return dates departing Nov 27, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-27) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $821.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-27-2026/return/november-30-2026/adults/1/cabin/economy) | | Nov 27, 2026 – Nov 30, 2026 · 3 nights · [Compare return dates departing Nov 27, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-27) | United Airlines | Up to 2 stops each way | [Axel-exclusive $836.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-27-2026/return/november-30-2026/adults/1/cabin/economy) | | Nov 28, 2026 – Dec 5, 2026 · 7 nights · [Compare return dates departing Nov 28, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-28) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $844.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-28-2026/return/december-5-2026/adults/1/cabin/economy) | | Nov 28, 2026 – Dec 5, 2026 · 7 nights · [Compare return dates departing Nov 28, 2026](https://helloaxel.com/en/flights/choose/sea-opo/nov-28) | United Airlines | Up to 2 stops each way | [Axel-exclusive $858.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/november-28-2026/return/december-5-2026/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): December 2026 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Dec 1, 2026 · One way · [Compare return dates departing Dec 1, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-1) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-1-2026/trip/one-way/adults/1/cabin/economy) | | Dec 1, 2026 · One way · [Compare return dates departing Dec 1, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-1) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-1-2026/trip/one-way/adults/1/cabin/economy) | | Dec 3, 2026 – Dec 6, 2026 · 3 nights · [Compare return dates departing Dec 3, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-3) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-3-2026/return/december-6-2026/adults/1/cabin/economy) | | Dec 3, 2026 – Dec 6, 2026 · 3 nights · [Compare return dates departing Dec 3, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-3) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-3-2026/return/december-6-2026/adults/1/cabin/economy) | | Dec 4, 2026 – Dec 7, 2026 · 3 nights · [Compare return dates departing Dec 4, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-4) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-4-2026/return/december-7-2026/adults/1/cabin/economy) | | Dec 4, 2026 – Dec 7, 2026 · 3 nights · [Compare return dates departing Dec 4, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-4) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-4-2026/return/december-7-2026/adults/1/cabin/economy) | | Dec 5, 2026 – Dec 12, 2026 · 7 nights · [Compare return dates departing Dec 5, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-5) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-5-2026/return/december-12-2026/adults/1/cabin/economy) | | Dec 5, 2026 – Dec 12, 2026 · 7 nights · [Compare return dates departing Dec 5, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-5) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-5-2026/return/december-12-2026/adults/1/cabin/economy) | | Dec 8, 2026 · One way · [Compare return dates departing Dec 8, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-8) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-8-2026/trip/one-way/adults/1/cabin/economy) | | Dec 8, 2026 · One way · [Compare return dates departing Dec 8, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-8) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-8-2026/trip/one-way/adults/1/cabin/economy) | | Dec 10, 2026 – Dec 13, 2026 · 3 nights · [Compare return dates departing Dec 10, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-10) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-10-2026/return/december-13-2026/adults/1/cabin/economy) | | Dec 10, 2026 – Dec 13, 2026 · 3 nights · [Compare return dates departing Dec 10, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-10) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-10-2026/return/december-13-2026/adults/1/cabin/economy) | | Dec 11, 2026 – Dec 14, 2026 · 3 nights · [Compare return dates departing Dec 11, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-11) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-11-2026/return/december-14-2026/adults/1/cabin/economy) | | Dec 11, 2026 – Dec 14, 2026 · 3 nights · [Compare return dates departing Dec 11, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-11) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-11-2026/return/december-14-2026/adults/1/cabin/economy) | | Dec 12, 2026 – Dec 19, 2026 · 7 nights · [Compare return dates departing Dec 12, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-12) | United Airlines | Up to 2 stops each way | [Axel-exclusive $993.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-12-2026/return/december-19-2026/adults/1/cabin/economy) | | Dec 12, 2026 – Dec 19, 2026 · 7 nights · [Compare return dates departing Dec 12, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-12) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1010.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-12-2026/return/december-19-2026/adults/1/cabin/economy) | | Dec 15, 2026 · One way · [Compare return dates departing Dec 15, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-15) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-15-2026/trip/one-way/adults/1/cabin/economy) | | Dec 15, 2026 · One way · [Compare return dates departing Dec 15, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-15) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-15-2026/trip/one-way/adults/1/cabin/economy) | | Dec 17, 2026 – Dec 20, 2026 · 3 nights · [Compare return dates departing Dec 17, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-17) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $978.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-17-2026/return/december-20-2026/adults/1/cabin/economy) | | Dec 17, 2026 – Dec 20, 2026 · 3 nights · [Compare return dates departing Dec 17, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-17) | United Airlines | Up to 2 stops each way | [Axel-exclusive $993.75](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-17-2026/return/december-20-2026/adults/1/cabin/economy) | | Dec 18, 2026 – Dec 21, 2026 · 3 nights · [Compare return dates departing Dec 18, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-18) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-18-2026/return/december-21-2026/adults/1/cabin/economy) | | Dec 18, 2026 – Dec 21, 2026 · 3 nights · [Compare return dates departing Dec 18, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-18) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-18-2026/return/december-21-2026/adults/1/cabin/economy) | | Dec 19, 2026 – Dec 26, 2026 · 7 nights · [Compare return dates departing Dec 19, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-19) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-19-2026/return/december-26-2026/adults/1/cabin/economy) | | Dec 19, 2026 – Dec 26, 2026 · 7 nights · [Compare return dates departing Dec 19, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-19) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1112.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-19-2026/return/december-26-2026/adults/1/cabin/economy) | | Dec 22, 2026 · One way · [Compare return dates departing Dec 22, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-22) | Air Canada | Up to 2 stops each way | [Axel-exclusive $700.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-22-2026/trip/one-way/adults/1/cabin/economy) | | Dec 22, 2026 · One way · [Compare return dates departing Dec 22, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-22) | United Airlines | Up to 2 stops each way | [Axel-exclusive $725.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-22-2026/trip/one-way/adults/1/cabin/economy) | | Dec 22, 2026 – Dec 27, 2026 · 5 nights · [Compare return dates departing Dec 22, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-22) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-22-2026/return/december-27-2026/adults/1/cabin/economy) | | Dec 22, 2026 – Dec 27, 2026 · 5 nights · [Compare return dates departing Dec 22, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-22) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-22-2026/return/december-27-2026/adults/1/cabin/economy) | | Dec 24, 2026 – Dec 27, 2026 · 3 nights · [Compare return dates departing Dec 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-24) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-24-2026/return/december-27-2026/adults/1/cabin/economy) | | Dec 24, 2026 – Dec 27, 2026 · 3 nights · [Compare return dates departing Dec 24, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-24) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-24-2026/return/december-27-2026/adults/1/cabin/economy) | | Dec 25, 2026 – Dec 28, 2026 · 3 nights · [Compare return dates departing Dec 25, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-25) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-25-2026/return/december-28-2026/adults/1/cabin/economy) | | Dec 25, 2026 – Dec 28, 2026 · 3 nights · [Compare return dates departing Dec 25, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-25) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-25-2026/return/december-28-2026/adults/1/cabin/economy) | | Dec 26, 2026 – Jan 2, 2027 · 7 nights · [Compare return dates departing Dec 26, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-26) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-26-2026/return/january-2-2027/adults/1/cabin/economy) | | Dec 26, 2026 – Jan 2, 2027 · 7 nights · [Compare return dates departing Dec 26, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-26) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1112.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-26-2026/return/january-2-2027/adults/1/cabin/economy) | | Dec 29, 2026 · One way · [Compare return dates departing Dec 29, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-29) | Air Canada | Up to 2 stops each way | [Axel-exclusive $700.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-29-2026/trip/one-way/adults/1/cabin/economy) | | Dec 29, 2026 · One way · [Compare return dates departing Dec 29, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-29) | United Airlines | Up to 2 stops each way | [Axel-exclusive $725.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-29-2026/trip/one-way/adults/1/cabin/economy) | | Dec 30, 2026 – Jan 2, 2027 · 3 nights · [Compare return dates departing Dec 30, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-30) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-30-2026/return/january-2-2027/adults/1/cabin/economy) | | Dec 30, 2026 – Jan 2, 2027 · 3 nights · [Compare return dates departing Dec 30, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-30) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1112.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-30-2026/return/january-2-2027/adults/1/cabin/economy) | | Dec 31, 2026 – Jan 3, 2027 · 3 nights · [Compare return dates departing Dec 31, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-31) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-31-2026/return/january-3-2027/adults/1/cabin/economy) | | Dec 31, 2026 – Jan 3, 2027 · 3 nights · [Compare return dates departing Dec 31, 2026](https://helloaxel.com/en/flights/choose/sea-opo/dec-31) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/december-31-2026/return/january-3-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): January 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Jan 1, 2027 – Jan 4, 2027 · 3 nights · [Compare return dates departing Jan 1, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-1) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1081.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-1-2027/return/january-4-2027/adults/1/cabin/economy) | | Jan 1, 2027 – Jan 4, 2027 · 3 nights · [Compare return dates departing Jan 1, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-1) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1100.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-1-2027/return/january-4-2027/adults/1/cabin/economy) | | Jan 2, 2027 – Jan 9, 2027 · 7 nights · [Compare return dates departing Jan 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-2) | United Airlines | Up to 2 stops each way | [Axel-exclusive $986.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-2-2027/return/january-9-2027/adults/1/cabin/economy) | | Jan 2, 2027 – Jan 9, 2027 · 7 nights · [Compare return dates departing Jan 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-2) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $992.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-2-2027/return/january-9-2027/adults/1/cabin/economy) | | Jan 5, 2027 · One way · [Compare return dates departing Jan 5, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-5) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-5-2027/trip/one-way/adults/1/cabin/economy) | | Jan 5, 2027 · One way · [Compare return dates departing Jan 5, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-5) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-5-2027/trip/one-way/adults/1/cabin/economy) | | Jan 7, 2027 – Jan 10, 2027 · 3 nights · [Compare return dates departing Jan 7, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-7) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-7-2027/return/january-10-2027/adults/1/cabin/economy) | | Jan 7, 2027 – Jan 10, 2027 · 3 nights · [Compare return dates departing Jan 7, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-7) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-7-2027/return/january-10-2027/adults/1/cabin/economy) | | Jan 8, 2027 – Jan 11, 2027 · 3 nights · [Compare return dates departing Jan 8, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-8) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-8-2027/return/january-11-2027/adults/1/cabin/economy) | | Jan 8, 2027 – Jan 11, 2027 · 3 nights · [Compare return dates departing Jan 8, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-8) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-8-2027/return/january-11-2027/adults/1/cabin/economy) | | Jan 9, 2027 – Jan 16, 2027 · 7 nights · [Compare return dates departing Jan 9, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-9) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-9-2027/return/january-16-2027/adults/1/cabin/economy) | | Jan 9, 2027 – Jan 16, 2027 · 7 nights · [Compare return dates departing Jan 9, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-9) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $890.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-9-2027/return/january-16-2027/adults/1/cabin/economy) | | Jan 12, 2027 · One way · [Compare return dates departing Jan 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-12) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-12-2027/trip/one-way/adults/1/cabin/economy) | | Jan 12, 2027 · One way · [Compare return dates departing Jan 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-12) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-12-2027/trip/one-way/adults/1/cabin/economy) | | Jan 14, 2027 – Jan 17, 2027 · 3 nights · [Compare return dates departing Jan 14, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-14) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-14-2027/return/january-17-2027/adults/1/cabin/economy) | | Jan 14, 2027 – Jan 17, 2027 · 3 nights · [Compare return dates departing Jan 14, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-14) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-14-2027/return/january-17-2027/adults/1/cabin/economy) | | Jan 15, 2027 – Jan 18, 2027 · 3 nights · [Compare return dates departing Jan 15, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-15) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-15-2027/return/january-18-2027/adults/1/cabin/economy) | | Jan 15, 2027 – Jan 18, 2027 · 3 nights · [Compare return dates departing Jan 15, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-15) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-15-2027/return/january-18-2027/adults/1/cabin/economy) | | Jan 16, 2027 – Jan 23, 2027 · 7 nights · [Compare return dates departing Jan 16, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-16) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-16-2027/return/january-23-2027/adults/1/cabin/economy) | | Jan 16, 2027 – Jan 23, 2027 · 7 nights · [Compare return dates departing Jan 16, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-16) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $890.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-16-2027/return/january-23-2027/adults/1/cabin/economy) | | Jan 19, 2027 · One way · [Compare return dates departing Jan 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-19) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-19-2027/trip/one-way/adults/1/cabin/economy) | | Jan 19, 2027 · One way · [Compare return dates departing Jan 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-19) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-19-2027/trip/one-way/adults/1/cabin/economy) | | Jan 21, 2027 – Jan 24, 2027 · 3 nights · [Compare return dates departing Jan 21, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-21) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-21-2027/return/january-24-2027/adults/1/cabin/economy) | | Jan 21, 2027 – Jan 24, 2027 · 3 nights · [Compare return dates departing Jan 21, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-21) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-21-2027/return/january-24-2027/adults/1/cabin/economy) | | Jan 22, 2027 – Jan 25, 2027 · 3 nights · [Compare return dates departing Jan 22, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-22) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-22-2027/return/january-25-2027/adults/1/cabin/economy) | | Jan 22, 2027 – Jan 25, 2027 · 3 nights · [Compare return dates departing Jan 22, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-22) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-22-2027/return/january-25-2027/adults/1/cabin/economy) | | Jan 23, 2027 – Jan 30, 2027 · 7 nights · [Compare return dates departing Jan 23, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-23) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-23-2027/return/january-30-2027/adults/1/cabin/economy) | | Jan 23, 2027 – Jan 30, 2027 · 7 nights · [Compare return dates departing Jan 23, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-23) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $890.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-23-2027/return/january-30-2027/adults/1/cabin/economy) | | Jan 26, 2027 · One way · [Compare return dates departing Jan 26, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-26) | Air Canada | Up to 2 stops each way | [Axel-exclusive $560.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-26-2027/trip/one-way/adults/1/cabin/economy) | | Jan 26, 2027 · One way · [Compare return dates departing Jan 26, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-26) | United Airlines | Up to 2 stops each way | [Axel-exclusive $580.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-26-2027/trip/one-way/adults/1/cabin/economy) | | Jan 28, 2027 – Jan 31, 2027 · 3 nights · [Compare return dates departing Jan 28, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-28) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $865.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-28-2027/return/january-31-2027/adults/1/cabin/economy) | | Jan 28, 2027 – Jan 31, 2027 · 3 nights · [Compare return dates departing Jan 28, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-28) | United Airlines | Up to 2 stops each way | [Axel-exclusive $880.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-28-2027/return/january-31-2027/adults/1/cabin/economy) | | Jan 29, 2027 – Feb 1, 2027 · 3 nights · [Compare return dates departing Jan 29, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-29) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $851.35](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-29-2027/return/february-1-2027/adults/1/cabin/economy) | | Jan 29, 2027 – Feb 1, 2027 · 3 nights · [Compare return dates departing Jan 29, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-29) | United Airlines | Up to 2 stops each way | [Axel-exclusive $866.35](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-29-2027/return/february-1-2027/adults/1/cabin/economy) | | Jan 30, 2027 – Feb 6, 2027 · 7 nights · [Compare return dates departing Jan 30, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-30) | United Airlines | Up to 2 stops each way | [Axel-exclusive $866.35](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-30-2027/return/february-6-2027/adults/1/cabin/economy) | | Jan 30, 2027 – Feb 6, 2027 · 7 nights · [Compare return dates departing Jan 30, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jan-30) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $875.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/january-30-2027/return/february-6-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): February 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Feb 2, 2027 · One way · [Compare return dates departing Feb 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-2) | Air Canada | Up to 2 stops each way | [Axel-exclusive $543.20](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-2-2027/trip/one-way/adults/1/cabin/economy) | | Feb 2, 2027 · One way · [Compare return dates departing Feb 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-2) | United Airlines | Up to 2 stops each way | [Axel-exclusive $562.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-2-2027/trip/one-way/adults/1/cabin/economy) | | Feb 4, 2027 – Feb 7, 2027 · 3 nights · [Compare return dates departing Feb 4, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-4) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $839.05](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-4-2027/return/february-7-2027/adults/1/cabin/economy) | | Feb 4, 2027 – Feb 7, 2027 · 3 nights · [Compare return dates departing Feb 4, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-4) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-4-2027/return/february-7-2027/adults/1/cabin/economy) | | Feb 5, 2027 – Feb 8, 2027 · 3 nights · [Compare return dates departing Feb 5, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-5) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $839.05](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-5-2027/return/february-8-2027/adults/1/cabin/economy) | | Feb 5, 2027 – Feb 8, 2027 · 3 nights · [Compare return dates departing Feb 5, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-5) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-5-2027/return/february-8-2027/adults/1/cabin/economy) | | Feb 6, 2027 – Feb 13, 2027 · 7 nights · [Compare return dates departing Feb 6, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-6) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-6-2027/return/february-13-2027/adults/1/cabin/economy) | | Feb 6, 2027 – Feb 13, 2027 · 7 nights · [Compare return dates departing Feb 6, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-6) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $863.30](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-6-2027/return/february-13-2027/adults/1/cabin/economy) | | Feb 12, 2027 – Feb 15, 2027 · 3 nights · [Compare return dates departing Feb 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-12) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $839.05](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-12-2027/return/february-15-2027/adults/1/cabin/economy) | | Feb 12, 2027 – Feb 15, 2027 · 3 nights · [Compare return dates departing Feb 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-12) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-12-2027/return/february-15-2027/adults/1/cabin/economy) | | Feb 19, 2027 – Feb 22, 2027 · 3 nights · [Compare return dates departing Feb 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-19) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $839.05](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-19-2027/return/february-22-2027/adults/1/cabin/economy) | | Feb 19, 2027 – Feb 22, 2027 · 3 nights · [Compare return dates departing Feb 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-19) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-19-2027/return/february-22-2027/adults/1/cabin/economy) | | Feb 20, 2027 – Feb 27, 2027 · 7 nights · [Compare return dates departing Feb 20, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-20) | United Airlines | Up to 2 stops each way | [Axel-exclusive $853.60](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-20-2027/return/february-27-2027/adults/1/cabin/economy) | | Feb 20, 2027 – Feb 27, 2027 · 7 nights · [Compare return dates departing Feb 20, 2027](https://helloaxel.com/en/flights/choose/sea-opo/feb-20) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $863.30](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/february-20-2027/return/february-27-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): March 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Mar 19, 2027 – Mar 22, 2027 · 3 nights · [Compare return dates departing Mar 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-19) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $933.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-19-2027/return/march-22-2027/adults/1/cabin/economy) | | Mar 19, 2027 – Mar 22, 2027 · 3 nights · [Compare return dates departing Mar 19, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-19) | United Airlines | Up to 2 stops each way | [Axel-exclusive $948.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-19-2027/return/march-22-2027/adults/1/cabin/economy) | | Mar 20, 2027 – Mar 27, 2027 · 7 nights · [Compare return dates departing Mar 20, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-20) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1012.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-20-2027/return/march-27-2027/adults/1/cabin/economy) | | Mar 20, 2027 – Mar 27, 2027 · 7 nights · [Compare return dates departing Mar 20, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-20) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1023.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-20-2027/return/march-27-2027/adults/1/cabin/economy) | | Mar 25, 2027 – Mar 29, 2027 · 4 nights · [Compare return dates departing Mar 25, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-25) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1190.25](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-25-2027/return/march-29-2027/adults/1/cabin/economy) | | Mar 25, 2027 – Mar 29, 2027 · 4 nights · [Compare return dates departing Mar 25, 2027](https://helloaxel.com/en/flights/choose/sea-opo/mar-25) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1207.50](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/march-25-2027/return/march-29-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): April 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Apr 16, 2027 – Apr 19, 2027 · 3 nights · [Compare return dates departing Apr 16, 2027](https://helloaxel.com/en/flights/choose/sea-opo/apr-16) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/april-16-2027/return/april-19-2027/adults/1/cabin/economy) | | Apr 16, 2027 – Apr 19, 2027 · 3 nights · [Compare return dates departing Apr 16, 2027](https://helloaxel.com/en/flights/choose/sea-opo/apr-16) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/april-16-2027/return/april-19-2027/adults/1/cabin/economy) | | Apr 17, 2027 – Apr 24, 2027 · 7 nights · [Compare return dates departing Apr 17, 2027](https://helloaxel.com/en/flights/choose/sea-opo/apr-17) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/april-17-2027/return/april-24-2027/adults/1/cabin/economy) | | Apr 17, 2027 – Apr 24, 2027 · 7 nights · [Compare return dates departing Apr 17, 2027](https://helloaxel.com/en/flights/choose/sea-opo/apr-17) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/april-17-2027/return/april-24-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): May 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | May 14, 2027 – May 17, 2027 · 3 nights · [Compare return dates departing May 14, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-14) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-14-2027/return/may-17-2027/adults/1/cabin/economy) | | May 14, 2027 – May 17, 2027 · 3 nights · [Compare return dates departing May 14, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-14) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-14-2027/return/may-17-2027/adults/1/cabin/economy) | | May 15, 2027 – May 22, 2027 · 7 nights · [Compare return dates departing May 15, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-15) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-15-2027/return/may-22-2027/adults/1/cabin/economy) | | May 15, 2027 – May 22, 2027 · 7 nights · [Compare return dates departing May 15, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-15) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-15-2027/return/may-22-2027/adults/1/cabin/economy) | | May 28, 2027 – May 31, 2027 · 3 nights · [Compare return dates departing May 28, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-28) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-28-2027/return/may-31-2027/adults/1/cabin/economy) | | May 28, 2027 – May 31, 2027 · 3 nights · [Compare return dates departing May 28, 2027](https://helloaxel.com/en/flights/choose/sea-opo/may-28) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/may-28-2027/return/may-31-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): June 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Jun 11, 2027 – Jun 14, 2027 · 3 nights · [Compare return dates departing Jun 11, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jun-11) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/june-11-2027/return/june-14-2027/adults/1/cabin/economy) | | Jun 11, 2027 – Jun 14, 2027 · 3 nights · [Compare return dates departing Jun 11, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jun-11) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/june-11-2027/return/june-14-2027/adults/1/cabin/economy) | | Jun 12, 2027 – Jun 19, 2027 · 7 nights · [Compare return dates departing Jun 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jun-12) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/june-12-2027/return/june-19-2027/adults/1/cabin/economy) | | Jun 12, 2027 – Jun 19, 2027 · 7 nights · [Compare return dates departing Jun 12, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jun-12) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/june-12-2027/return/june-19-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): July 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Jul 2, 2027 – Jul 6, 2027 · 4 nights · [Compare return dates departing Jul 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-2) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-2-2027/return/july-6-2027/adults/1/cabin/economy) | | Jul 2, 2027 – Jul 6, 2027 · 4 nights · [Compare return dates departing Jul 2, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-2) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-2-2027/return/july-6-2027/adults/1/cabin/economy) | | Jul 9, 2027 – Jul 12, 2027 · 3 nights · [Compare return dates departing Jul 9, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-9) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-9-2027/return/july-12-2027/adults/1/cabin/economy) | | Jul 9, 2027 – Jul 12, 2027 · 3 nights · [Compare return dates departing Jul 9, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-9) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-9-2027/return/july-12-2027/adults/1/cabin/economy) | | Jul 10, 2027 – Jul 17, 2027 · 7 nights · [Compare return dates departing Jul 10, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-10) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-10-2027/return/july-17-2027/adults/1/cabin/economy) | | Jul 10, 2027 – Jul 17, 2027 · 7 nights · [Compare return dates departing Jul 10, 2027](https://helloaxel.com/en/flights/choose/sea-opo/jul-10) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/july-10-2027/return/july-17-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): August 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Aug 6, 2027 – Aug 9, 2027 · 3 nights · [Compare return dates departing Aug 6, 2027](https://helloaxel.com/en/flights/choose/sea-opo/aug-6) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/august-6-2027/return/august-9-2027/adults/1/cabin/economy) | | Aug 6, 2027 – Aug 9, 2027 · 3 nights · [Compare return dates departing Aug 6, 2027](https://helloaxel.com/en/flights/choose/sea-opo/aug-6) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/august-6-2027/return/august-9-2027/adults/1/cabin/economy) | | Aug 7, 2027 – Aug 14, 2027 · 7 nights · [Compare return dates departing Aug 7, 2027](https://helloaxel.com/en/flights/choose/sea-opo/aug-7) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/august-7-2027/return/august-14-2027/adults/1/cabin/economy) | | Aug 7, 2027 – Aug 14, 2027 · 7 nights · [Compare return dates departing Aug 7, 2027](https://helloaxel.com/en/flights/choose/sea-opo/aug-7) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/august-7-2027/return/august-14-2027/adults/1/cabin/economy) | ### Seattle (SEA) to Porto (OPO): September 2027 | Travel dates | Airline | Stops | Total price | | --- | --- | --- | ---: | | Sep 3, 2027 – Sep 6, 2027 · 3 nights · [Compare return dates departing Sep 3, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-3) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-3-2027/return/september-6-2027/adults/1/cabin/economy) | | Sep 3, 2027 – Sep 6, 2027 · 3 nights · [Compare return dates departing Sep 3, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-3) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-3-2027/return/september-6-2027/adults/1/cabin/economy) | | Sep 4, 2027 – Sep 11, 2027 · 7 nights · [Compare return dates departing Sep 4, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-4) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-4-2027/return/september-11-2027/adults/1/cabin/economy) | | Sep 4, 2027 – Sep 11, 2027 · 7 nights · [Compare return dates departing Sep 4, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-4) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-4-2027/return/september-11-2027/adults/1/cabin/economy) | | Sep 24, 2027 – Sep 27, 2027 · 3 nights · [Compare return dates departing Sep 24, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-24) | Air Canada / United Airlines | Up to 2 stops each way | [Axel-exclusive $1205.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-24-2027/return/september-27-2027/adults/1/cabin/economy) | | Sep 24, 2027 – Sep 27, 2027 · 3 nights · [Compare return dates departing Sep 24, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-24) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-24-2027/return/september-27-2027/adults/1/cabin/economy) | | Sep 25, 2027 – Oct 2, 2027 · 7 nights · [Compare return dates departing Sep 25, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-25) | United Airlines | Up to 2 stops each way | [Axel-exclusive $1215.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-25-2027/return/october-2-2027/adults/1/cabin/economy) | | Sep 25, 2027 – Oct 2, 2027 · 7 nights · [Compare return dates departing Sep 25, 2027](https://helloaxel.com/en/flights/choose/sea-opo/sep-25) | Air Canada / Delta Air Lines | Up to 2 stops each way | [Axel-exclusive $1240.00](https://helloaxel.com/en/f/start/from/sea/to/opo/depart/september-25-2027/return/october-2-2027/adults/1/cabin/economy) | ### Hotels in Porto for these trips **Hotels:** under a trip, hotels in Porto for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates. - Hotels in Porto for these nights (Nov 19–22, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $167 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-19/2026-11-22/2-adults) · 4★ [Timbre Heroismo, $221 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-11-19/2026-11-22/2-adults) · 5★ [Crowne Plaza Porto by IHG, $351 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-11-19/2026-11-22/2-adults) - Hotels in Porto for these nights (Nov 20–23, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $173 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-20/2026-11-23/2-adults) · 4★ [Timbre Heroismo, $221 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-11-20/2026-11-23/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $341 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-11-20/2026-11-23/2-adults) - Hotels in Porto for these nights (Nov 21–28, 2026 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $371 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-21/2026-11-28/2-adults) · 4★ [OCA Oriental Porto, $508 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-11-21/2026-11-28/2-adults) · 5★ [Crowne Plaza Porto by IHG, $811 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-11-21/2026-11-28/2-adults) - Hotels in Porto for these nights (Nov 24–29, 2026 · 5 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $253 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-24/2026-11-29/2-adults) · 4★ [OCA Oriental Porto, $370 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-11-24/2026-11-29/2-adults) · 5★ [Crowne Plaza Porto by IHG, $581 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-11-24/2026-11-29/2-adults) - Hotels in Porto for these nights (Nov 26–29, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-26/2026-11-29/2-adults) · 4★ [Dorma Essenzia Porto, $233 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2026-11-26/2026-11-29/2-adults) · 5★ [Crowne Plaza Porto by IHG, $350 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-11-26/2026-11-29/2-adults) - Hotels in Porto for these nights (Nov 27–30, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-27/2026-11-30/2-adults) · 4★ [OCA Oriental Porto, $234 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-11-27/2026-11-30/2-adults) · 5★ [Crowne Plaza Porto by IHG, $350 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-11-27/2026-11-30/2-adults) - Hotels in Porto for these nights (Nov 28 – Dec 5, 2026 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $351 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-11-28/2026-12-05/2-adults) · 4★ [Timbre Heroismo, $492 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-11-28/2026-12-05/2-adults) · 5★ [Timbre Virtudes, $843 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2026-11-28/2026-12-05/2-adults) - Hotels in Porto for these nights (Dec 3–6, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-03/2026-12-06/2-adults) · 4★ [Timbre Heroismo, $231 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-12-03/2026-12-06/2-adults) · 5★ [Timbre Virtudes, $372 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2026-12-03/2026-12-06/2-adults) - Hotels in Porto for these nights (Dec 4–7, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-04/2026-12-07/2-adults) · 4★ [Timbre Heroismo, $246 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-12-04/2026-12-07/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $371 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-04/2026-12-07/2-adults) - Hotels in Porto for these nights (Dec 5–12, 2026 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $354 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-05/2026-12-12/2-adults) · 4★ [Dorma Essenzia Porto, $536 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2026-12-05/2026-12-12/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $855 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-05/2026-12-12/2-adults) - Hotels in Porto for these nights (Dec 10–13, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-10/2026-12-13/2-adults) · 4★ [Casual Inca Porto, $199 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2026-12-10/2026-12-13/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $359 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-10/2026-12-13/2-adults) - Hotels in Porto for these nights (Dec 11–14, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $154 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-11/2026-12-14/2-adults) · 4★ [Casual Inca Porto, $203 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2026-12-11/2026-12-14/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $351 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-11/2026-12-14/2-adults) - Hotels in Porto for these nights (Dec 12–19, 2026 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $350 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-12/2026-12-19/2-adults) · 4★ [Casual Inca Porto, $452 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2026-12-12/2026-12-19/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $831 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-12/2026-12-19/2-adults) - Hotels in Porto for these nights (Dec 17–20, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $155 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-17/2026-12-20/2-adults) · 4★ [Casual Inca Porto, $187 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2026-12-17/2026-12-20/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $347 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-17/2026-12-20/2-adults) - Hotels in Porto for these nights (Dec 18–21, 2026 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $159 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-18/2026-12-21/2-adults) · 4★ [Dorma Essenzia Porto, $192 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2026-12-18/2026-12-21/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $337 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-18/2026-12-21/2-adults) - Hotels in Porto for these nights (Dec 19–26, 2026 · 7 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $394 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2026-12-19/2026-12-26/2-adults) · 4★ [Dorma Essenzia Porto, $497 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2026-12-19/2026-12-26/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $825 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-19/2026-12-26/2-adults) - Hotels in Porto for these nights (Dec 22–27, 2026 · 5 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $285 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2026-12-22/2026-12-27/2-adults) · 4★ [OCA Oriental Porto, $353 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-12-22/2026-12-27/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $593 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-22/2026-12-27/2-adults) - Hotels in Porto for these nights (Dec 24–27, 2026 · 3 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $176 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2026-12-24/2026-12-27/2-adults) · 4★ [Timbre Heroismo, $219 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2026-12-24/2026-12-27/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $350 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-24/2026-12-27/2-adults) - Hotels in Porto for these nights (Dec 25–28, 2026 · 3 nights · 2 adults, 1 room): 3★ [Hospedaria Londres, $190 total](https://helloaxel.com/en/hotels/porto/hospedaria-londres-1287068/2026-12-25/2026-12-28/2-adults) · 4★ [OCA Oriental Porto, $218 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-12-25/2026-12-28/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $341 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2026-12-25/2026-12-28/2-adults) - Hotels in Porto for these nights (Dec 26 – Jan 2, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $490 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-26/2027-01-02/2-adults) · 4★ [OCA Oriental Porto, $682 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-12-26/2027-01-02/2-adults) · 5★ [Crowne Plaza Porto by IHG, $948 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-12-26/2027-01-02/2-adults) - Hotels in Porto for these nights (Dec 30 – Jan 2, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $230 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-30/2027-01-02/2-adults) · 4★ [OCA Oriental Porto, $340 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-12-30/2027-01-02/2-adults) · 5★ [Crowne Plaza Porto by IHG, $456 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-12-30/2027-01-02/2-adults) - Hotels in Porto for these nights (Dec 31 – Jan 3, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $231 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2026-12-31/2027-01-03/2-adults) · 4★ [OCA Oriental Porto, $302 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2026-12-31/2027-01-03/2-adults) · 5★ [Crowne Plaza Porto by IHG, $422 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2026-12-31/2027-01-03/2-adults) - Hotels in Porto for these nights (Jan 1–4, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $192 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-01/2027-01-04/2-adults) · 4★ [OCA Oriental Porto, $205 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-01/2027-01-04/2-adults) · 5★ [Crowne Plaza Porto by IHG, $368 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2027-01-01/2027-01-04/2-adults) - Hotels in Porto for these nights (Jan 2–9, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $362 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-02/2027-01-09/2-adults) · 4★ [OCA Oriental Porto, $475 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-02/2027-01-09/2-adults) · 5★ [Crowne Plaza Porto by IHG, $843 total](https://helloaxel.com/en/hotels/porto/crowne-plaza-porto-by-ihg-1460511/2027-01-02/2027-01-09/2-adults) - Hotels in Porto for these nights (Jan 7–10, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-07/2027-01-10/2-adults) · 4★ [Casual Inca Porto, $211 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2027-01-07/2027-01-10/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $361 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-07/2027-01-10/2-adults) - Hotels in Porto for these nights (Jan 8–11, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-08/2027-01-11/2-adults) · 4★ [Casual Inca Porto, $204 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2027-01-08/2027-01-11/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $356 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-08/2027-01-11/2-adults) - Hotels in Porto for these nights (Jan 9–16, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $340 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-09/2027-01-16/2-adults) · 4★ [Dorma Essenzia Porto, $467 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2027-01-09/2027-01-16/2-adults) · 5★ [Timbre Virtudes, $839 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-01-09/2027-01-16/2-adults) - Hotels in Porto for these nights (Jan 14–17, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-14/2027-01-17/2-adults) · 4★ [Timbre Heroismo, $211 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2027-01-14/2027-01-17/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $348 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-14/2027-01-17/2-adults) - Hotels in Porto for these nights (Jan 15–18, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-15/2027-01-18/2-adults) · 4★ [Timbre Heroismo, $212 total](https://helloaxel.com/en/hotels/porto/timbre-heroismo-1030453/2027-01-15/2027-01-18/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $338 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-15/2027-01-18/2-adults) - Hotels in Porto for these nights (Jan 16–23, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $340 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-16/2027-01-23/2-adults) · 4★ [Casual Inca Porto, $458 total](https://helloaxel.com/en/hotels/porto/casual-inca-porto-1224024/2027-01-16/2027-01-23/2-adults) · 5★ [Timbre Virtudes, $826 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-01-16/2027-01-23/2-adults) - Hotels in Porto for these nights (Jan 21–24, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-21/2027-01-24/2-adults) · 4★ [OCA Oriental Porto, $188 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-21/2027-01-24/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $351 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-21/2027-01-24/2-adults) - Hotels in Porto for these nights (Jan 22–25, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-22/2027-01-25/2-adults) · 4★ [OCA Oriental Porto, $190 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-22/2027-01-25/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $346 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-22/2027-01-25/2-adults) - Hotels in Porto for these nights (Jan 23–30, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $340 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-23/2027-01-30/2-adults) · 4★ [OCA Oriental Porto, $436 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-23/2027-01-30/2-adults) · 5★ [Timbre Virtudes, $826 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-01-23/2027-01-30/2-adults) - Hotels in Porto for these nights (Jan 28–31, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-28/2027-01-31/2-adults) · 4★ [OCA Oriental Porto, $192 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-28/2027-01-31/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $353 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-28/2027-01-31/2-adults) - Hotels in Porto for these nights (Jan 29 – Feb 1, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $148 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-29/2027-02-01/2-adults) · 4★ [OCA Oriental Porto, $190 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-29/2027-02-01/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $342 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-29/2027-02-01/2-adults) - Hotels in Porto for these nights (Jan 30 – Feb 6, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $340 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-01-30/2027-02-06/2-adults) · 4★ [OCA Oriental Porto, $433 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-01-30/2027-02-06/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $838 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-01-30/2027-02-06/2-adults) - Hotels in Porto for these nights (Feb 4–7, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $149 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-02-04/2027-02-07/2-adults) · 4★ [Dorma Essenzia Porto, $190 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2027-02-04/2027-02-07/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $355 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-02-04/2027-02-07/2-adults) - Hotels in Porto for these nights (Feb 5–8, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $150 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-02-05/2027-02-08/2-adults) · 4★ [Dorma Essenzia Porto, $190 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2027-02-05/2027-02-08/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $345 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-02-05/2027-02-08/2-adults) - Hotels in Porto for these nights (Feb 6–13, 2027 · 7 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $383 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-02-06/2027-02-13/2-adults) · 4★ [Dorma Essenzia Porto, $450 total](https://helloaxel.com/en/hotels/porto/dorma-essenzia-porto-1248893/2027-02-06/2027-02-13/2-adults) · 5★ [Timbre Virtudes, $862 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-02-06/2027-02-13/2-adults) - Hotels in Porto for these nights (Feb 12–15, 2027 · 3 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $177 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2027-02-12/2027-02-15/2-adults) · 4★ [OCA Oriental Porto, $181 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-02-12/2027-02-15/2-adults) · 5★ [Timbre Virtudes, $372 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-02-12/2027-02-15/2-adults) - Hotels in Porto for these nights (Feb 19–22, 2027 · 3 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $177 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2027-02-19/2027-02-22/2-adults) · 4★ [OCA Oriental Porto, $192 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-02-19/2027-02-22/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $346 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-02-19/2027-02-22/2-adults) - Hotels in Porto for these nights (Feb 20–27, 2027 · 7 nights · 2 adults, 1 room): 3★ [Stay Hotel Porto Centro Trindade, $413 total](https://helloaxel.com/en/hotels/porto/stay-hotel-porto-centro-trindade-1451454/2027-02-20/2027-02-27/2-adults) · 4★ [OCA Oriental Porto, $433 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-02-20/2027-02-27/2-adults) · 5★ [Timbre Virtudes, $845 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-02-20/2027-02-27/2-adults) - Hotels in Porto for these nights (Mar 19–22, 2027 · 3 nights · 2 adults, 1 room): 3★ [The House of Sandeman, $180 total](https://helloaxel.com/en/hotels/porto/the-house-of-sandeman-1094837/2027-03-19/2027-03-22/2-adults) · 4★ [OCA Oriental Porto, $215 total](https://helloaxel.com/en/hotels/porto/oca-oriental-porto-1249581/2027-03-19/2027-03-22/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $363 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-03-19/2027-03-22/2-adults) - Hotels in Porto for these nights (Mar 20–27, 2027 · 7 nights · 2 adults, 1 room): 3★ [Hospedaria Londres, $467 total](https://helloaxel.com/en/hotels/porto/hospedaria-londres-1287068/2027-03-20/2027-03-27/2-adults) · 4★ [HF Fénix Porto, $577 total](https://helloaxel.com/en/hotels/porto/hf-fenix-porto-1288936/2027-03-20/2027-03-27/2-adults) · 5★ [Timbre Virtudes, $910 total](https://helloaxel.com/en/hotels/porto/timbre-virtudes-1297676/2027-03-20/2027-03-27/2-adults) - Hotels in Porto for these nights (Mar 25–29, 2027 · 4 nights · 2 adults, 1 room): 3★ [Hospedaria Londres, $272 total](https://helloaxel.com/en/hotels/porto/hospedaria-londres-1287068/2027-03-25/2027-03-29/2-adults) · 4★ [HF Fénix Porto, $368 total](https://helloaxel.com/en/hotels/porto/hf-fenix-porto-1288936/2027-03-25/2027-03-29/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $585 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-03-25/2027-03-29/2-adults) - Hotels in Porto for these nights (Apr 16–19, 2027 · 3 nights · 2 adults, 1 room): 3★ [Hospedaria Londres, $217 total](https://helloaxel.com/en/hotels/porto/hospedaria-londres-1287068/2027-04-16/2027-04-19/2-adults) · 4★ [HF Fénix Porto, $303 total](https://helloaxel.com/en/hotels/porto/hf-fenix-porto-1288936/2027-04-16/2027-04-19/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $365 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-04-16/2027-04-19/2-adults) - Hotels in Porto for these nights (Apr 17–24, 2027 · 7 nights · 2 adults, 1 room): 3★ [Hospedaria Londres, $527 total](https://helloaxel.com/en/hotels/porto/hospedaria-londres-1287068/2027-04-17/2027-04-24/2-adults) · 4★ [HF Fénix Porto, $665 total](https://helloaxel.com/en/hotels/porto/hf-fenix-porto-1288936/2027-04-17/2027-04-24/2-adults) · 5★ [Sheraton Porto Hotel & Spa, $915 total](https://helloaxel.com/en/hotels/porto/sheraton-porto-hotel-spa-1447070/2027-04-17/2027-04-24/2-adults) - Hotels in Porto for these nights (May 14–17, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-05-14/2027-05-17/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-05-14/2027-05-17/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-05-14/2027-05-17/2-adults) - Hotels in Porto for these nights (May 15–22, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-05-15/2027-05-22/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-05-15/2027-05-22/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-05-15/2027-05-22/2-adults) - Hotels in Porto for these nights (May 28–31, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-05-28/2027-05-31/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-05-28/2027-05-31/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-05-28/2027-05-31/2-adults) - Hotels in Porto for these nights (Jun 11–14, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-06-11/2027-06-14/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-06-11/2027-06-14/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-06-11/2027-06-14/2-adults) - Hotels in Porto for these nights (Jun 12–19, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-06-12/2027-06-19/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-06-12/2027-06-19/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-06-12/2027-06-19/2-adults) - Hotels in Porto for these nights (Jul 2–6, 2027 · 4 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-07-02/2027-07-06/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-07-02/2027-07-06/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-07-02/2027-07-06/2-adults) - Hotels in Porto for these nights (Jul 9–12, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-07-09/2027-07-12/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-07-09/2027-07-12/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-07-09/2027-07-12/2-adults) - Hotels in Porto for these nights (Jul 10–17, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-07-10/2027-07-17/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-07-10/2027-07-17/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-07-10/2027-07-17/2-adults) - Hotels in Porto for these nights (Aug 6–9, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-08-06/2027-08-09/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-08-06/2027-08-09/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-08-06/2027-08-09/2-adults) - Hotels in Porto for these nights (Aug 7–14, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-08-07/2027-08-14/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-08-07/2027-08-14/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-08-07/2027-08-14/2-adults) - Hotels in Porto for these nights (Sep 3–6, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-09-03/2027-09-06/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-09-03/2027-09-06/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-09-03/2027-09-06/2-adults) - Hotels in Porto for these nights (Sep 4–11, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-09-04/2027-09-11/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-09-04/2027-09-11/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-09-04/2027-09-11/2-adults) - Hotels in Porto for these nights (Sep 24–27, 2027 · 3 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-09-24/2027-09-27/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-09-24/2027-09-27/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-09-24/2027-09-27/2-adults) - Hotels in Porto for these nights (Sep 25 – Oct 2, 2027 · 7 nights · 2 adults, 1 room): 3★ [Mo House](https://helloaxel.com/en/hotels/porto/mo-house-1106589/2027-09-25/2027-10-02/2-adults) · 4★ [Mercure Porto Centro Aliados](https://helloaxel.com/en/hotels/porto/mercure-porto-centro-aliados-1227792/2027-09-25/2027-10-02/2-adults) · 5★ [Wine & Books Porto Hotel - Small Luxury Hotels of the World](https://helloaxel.com/en/hotels/porto/wine-books-porto-hotel-small-luxury-hotels-of-the-world-1275394/2027-09-25/2027-10-02/2-adults) [All hotels in Porto](https://helloaxel.com/en/hotels/destinations/porto) [Route overview: Seattle to Porto (OPO) flight deals](/en/flights/from-seattle-sea-to-porto-opo) ### 2026-11-19 → 2026-11-22 · Axel-exclusive $836.00 - United Airlines UA1356 / UA1505 / UA144: SEA 2026-11-19 08:30:00 → OPO 2026-11-20 09:30:00; 2 stop(s) via DEN, EWR; 1020 minutes. Local airport times. - UA1356: SEA 2026-11-19 08:30:00 → DEN 2026-11-19 12:14:00; layover at DEN: 93 minutes. - UA1505: DEN 2026-11-19 13:47:00 → EWR 2026-11-19 19:30:00; layover at EWR: 135 minutes. - UA144: EWR 2026-11-19 21:45:00 → OPO 2026-11-20 09:30:00. - United Airlines UA145 / UA2614: OPO 2026-11-22 12:35:00 → SEA 2026-11-22 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-11-22 12:35:00 → EWR 2026-11-22 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-11-22 18:17:00 → SEA 2026-11-22 21:39:00. ### 2026-11-19 → 2026-11-22 · Axel-exclusive $836.00 - Air Canada AC540 / AC1510 / UA144: SEA 2026-11-19 07:45:00 → OPO 2026-11-20 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2026-11-19 07:45:00 → YYZ 2026-11-19 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2026-11-19 18:00:00 → EWR 2026-11-19 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2026-11-19 21:45:00 → OPO 2026-11-20 09:30:00. - Air France AF1517 / AF76: OPO 2026-11-22 05:55:00 → SEA 2026-11-22 13:50:00; 1 stop(s) via CDG; 955 minutes. Local airport times. - AF1517: OPO 2026-11-22 05:55:00 → CDG 2026-11-22 09:20:00; layover at CDG: 185 minutes. - AF76: CDG 2026-11-22 12:25:00 → SEA 2026-11-22 13:50:00. ### 2026-11-24 · one way · Axel-exclusive $532.00 - Air Canada AC540 / AC1510 / UA144: SEA 2026-11-24 07:45:00 → OPO 2026-11-25 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2026-11-24 07:45:00 → YYZ 2026-11-24 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2026-11-24 18:00:00 → EWR 2026-11-24 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2026-11-24 21:45:00 → OPO 2026-11-25 09:30:00. ### 2026-11-24 · one way · Axel-exclusive $551.00 - United Airlines UA1356 / UA1505 / UA144: SEA 2026-11-24 08:30:00 → OPO 2026-11-25 09:30:00; 2 stop(s) via DEN, EWR; 1020 minutes. Local airport times. - UA1356: SEA 2026-11-24 08:30:00 → DEN 2026-11-24 12:14:00; layover at DEN: 93 minutes. - UA1505: DEN 2026-11-24 13:47:00 → EWR 2026-11-24 19:30:00; layover at EWR: 135 minutes. - UA144: EWR 2026-11-24 21:45:00 → OPO 2026-11-25 09:30:00. ### 2026-11-28 → 2026-12-05 · Axel-exclusive $844.50 - Air Canada AC540 / AC1510 / UA144: SEA 2026-11-28 07:45:00 → OPO 2026-11-29 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2026-11-28 07:45:00 → YYZ 2026-11-28 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2026-11-28 18:00:00 → EWR 2026-11-28 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2026-11-28 21:45:00 → OPO 2026-11-29 09:30:00. - United Airlines UA145 / UA2614: OPO 2026-12-05 12:35:00 → SEA 2026-12-05 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-12-05 12:35:00 → EWR 2026-12-05 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-12-05 18:17:00 → SEA 2026-12-05 21:39:00. ### 2026-11-28 → 2026-12-05 · Axel-exclusive $858.75 - United Airlines UA747 / UA2475 / TP214: SEA 2026-11-28 10:55:00 → OPO 2026-11-29 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2026-11-28 10:55:00 → ORD 2026-11-28 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2026-11-28 18:30:00 → EWR 2026-11-28 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2026-11-28 23:40:00 → OPO 2026-11-29 11:20:00. - United Airlines UA145 / UA2614: OPO 2026-12-05 12:35:00 → SEA 2026-12-05 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-12-05 12:35:00 → EWR 2026-12-05 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-12-05 18:17:00 → SEA 2026-12-05 21:39:00. ### 2026-12-12 → 2026-12-19 · Axel-exclusive $993.75 - United Airlines UA747 / UA2475 / TP214: SEA 2026-12-12 10:55:00 → OPO 2026-12-13 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2026-12-12 10:55:00 → ORD 2026-12-12 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2026-12-12 18:30:00 → EWR 2026-12-12 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2026-12-12 23:40:00 → OPO 2026-12-13 11:20:00. - United Airlines UA145 / UA2614: OPO 2026-12-19 12:35:00 → SEA 2026-12-19 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-12-19 12:35:00 → EWR 2026-12-19 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-12-19 18:17:00 → SEA 2026-12-19 21:39:00. ### 2026-12-12 → 2026-12-19 · Axel-exclusive $1010.00 - Air Canada AC540 / AC1510 / UA144: SEA 2026-12-12 07:45:00 → OPO 2026-12-13 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2026-12-12 07:45:00 → YYZ 2026-12-12 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2026-12-12 18:00:00 → EWR 2026-12-12 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2026-12-12 21:45:00 → OPO 2026-12-13 09:30:00. - Delta Air Lines DL139 / DL740: OPO 2026-12-19 10:15:00 → SEA 2026-12-19 20:04:00; 1 stop(s) via JFK; 1069 minutes. Local airport times. - DL139: OPO 2026-12-19 10:15:00 → JFK 2026-12-19 13:18:00; layover at JFK: 207 minutes. - DL740: JFK 2026-12-19 16:45:00 → SEA 2026-12-19 20:04:00. ### 2026-12-25 → 2026-12-28 · Axel-exclusive $1081.25 - Air Canada AC540 / AC1510 / UA144: SEA 2026-12-25 07:45:00 → OPO 2026-12-26 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2026-12-25 07:45:00 → YYZ 2026-12-25 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2026-12-25 18:00:00 → EWR 2026-12-25 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2026-12-25 21:45:00 → OPO 2026-12-26 09:30:00. - United Airlines UA145 / UA2614: OPO 2026-12-28 12:35:00 → SEA 2026-12-28 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-12-28 12:35:00 → EWR 2026-12-28 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-12-28 18:17:00 → SEA 2026-12-28 21:39:00. ### 2026-12-25 → 2026-12-28 · Axel-exclusive $1100.00 - United Airlines UA747 / UA2475 / TP214: SEA 2026-12-25 10:55:00 → OPO 2026-12-26 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2026-12-25 10:55:00 → ORD 2026-12-25 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2026-12-25 18:30:00 → EWR 2026-12-25 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2026-12-25 23:40:00 → OPO 2026-12-26 11:20:00. - United Airlines UA145 / UA2614: OPO 2026-12-28 12:35:00 → SEA 2026-12-28 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2026-12-28 12:35:00 → EWR 2026-12-28 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2026-12-28 18:17:00 → SEA 2026-12-28 21:39:00. ### 2027-01-07 → 2027-01-10 · Axel-exclusive $865.00 - Air Canada AC540 / AC1510 / UA144: SEA 2027-01-07 07:45:00 → OPO 2027-01-08 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-01-07 07:45:00 → YYZ 2027-01-07 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-01-07 18:00:00 → EWR 2027-01-07 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-01-07 21:45:00 → OPO 2027-01-08 09:30:00. - United Airlines UA145 / UA2614: OPO 2027-01-10 12:35:00 → SEA 2027-01-10 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-01-10 12:35:00 → EWR 2027-01-10 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-01-10 18:17:00 → SEA 2027-01-10 21:39:00. ### 2027-01-07 → 2027-01-10 · Axel-exclusive $880.00 - United Airlines UA747 / UA2475 / TP214: SEA 2027-01-07 10:55:00 → OPO 2027-01-08 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-01-07 10:55:00 → ORD 2027-01-07 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-01-07 18:30:00 → EWR 2027-01-07 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-01-07 23:40:00 → OPO 2027-01-08 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-01-10 12:35:00 → SEA 2027-01-10 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-01-10 12:35:00 → EWR 2027-01-10 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-01-10 18:17:00 → SEA 2027-01-10 21:39:00. ### 2027-01-21 → 2027-01-24 · Axel-exclusive $865.00 - Air Canada AC540 / AC1510 / UA144: SEA 2027-01-21 07:45:00 → OPO 2027-01-22 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-01-21 07:45:00 → YYZ 2027-01-21 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-01-21 18:00:00 → EWR 2027-01-21 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-01-21 21:45:00 → OPO 2027-01-22 09:30:00. - United Airlines UA145 / UA2614: OPO 2027-01-24 12:35:00 → SEA 2027-01-24 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-01-24 12:35:00 → EWR 2027-01-24 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-01-24 18:17:00 → SEA 2027-01-24 21:39:00. ### 2027-01-21 → 2027-01-24 · Axel-exclusive $880.00 - United Airlines UA747 / UA2475 / TP214: SEA 2027-01-21 10:55:00 → OPO 2027-01-22 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-01-21 10:55:00 → ORD 2027-01-21 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-01-21 18:30:00 → EWR 2027-01-21 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-01-21 23:40:00 → OPO 2027-01-22 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-01-24 12:35:00 → SEA 2027-01-24 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-01-24 12:35:00 → EWR 2027-01-24 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-01-24 18:17:00 → SEA 2027-01-24 21:39:00. ### 2027-02-04 → 2027-02-07 · Axel-exclusive $839.05 - Air Canada AC540 / AC1510 / UA144: SEA 2027-02-04 07:45:00 → OPO 2027-02-05 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-02-04 07:45:00 → YYZ 2027-02-04 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-02-04 18:00:00 → EWR 2027-02-04 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-02-04 21:45:00 → OPO 2027-02-05 09:30:00. - United Airlines UA145 / UA2614: OPO 2027-02-07 12:35:00 → SEA 2027-02-07 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-02-07 12:35:00 → EWR 2027-02-07 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-02-07 18:17:00 → SEA 2027-02-07 21:39:00. ### 2027-02-04 → 2027-02-07 · Axel-exclusive $853.60 - United Airlines UA747 / UA2475 / TP214: SEA 2027-02-04 10:55:00 → OPO 2027-02-05 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-02-04 10:55:00 → ORD 2027-02-04 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-02-04 18:30:00 → EWR 2027-02-04 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-02-04 23:40:00 → OPO 2027-02-05 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-02-07 12:35:00 → SEA 2027-02-07 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-02-07 12:35:00 → EWR 2027-02-07 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-02-07 18:17:00 → SEA 2027-02-07 21:39:00. ### 2027-03-19 → 2027-03-22 · Axel-exclusive $933.25 - Air Canada AC540 / AC1510 / UA144: SEA 2027-03-19 07:45:00 → OPO 2027-03-20 08:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-03-19 07:45:00 → YYZ 2027-03-19 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-03-19 18:00:00 → EWR 2027-03-19 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-03-19 21:45:00 → OPO 2027-03-20 08:30:00. - United Airlines UA145 / UA2614: OPO 2027-03-22 12:35:00 → SEA 2027-03-22 22:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-03-22 12:35:00 → EWR 2027-03-22 17:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-03-22 19:17:00 → SEA 2027-03-22 22:39:00. ### 2027-03-19 → 2027-03-22 · Axel-exclusive $948.25 - United Airlines UA747 / UA2475 / TP214: SEA 2027-03-19 10:55:00 → OPO 2027-03-20 10:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-03-19 10:55:00 → ORD 2027-03-19 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-03-19 18:30:00 → EWR 2027-03-19 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-03-19 23:40:00 → OPO 2027-03-20 10:20:00. - United Airlines UA145 / UA2614: OPO 2027-03-22 12:35:00 → SEA 2027-03-22 22:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-03-22 12:35:00 → EWR 2027-03-22 17:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-03-22 19:17:00 → SEA 2027-03-22 22:39:00. ### 2027-05-15 → 2027-05-22 · Axel-exclusive $1215.00 - United Airlines UA747 / UA2475 / TP214: SEA 2027-05-15 10:55:00 → OPO 2027-05-16 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-05-15 10:55:00 → ORD 2027-05-15 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-05-15 18:30:00 → EWR 2027-05-15 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-05-15 23:40:00 → OPO 2027-05-16 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-05-22 12:35:00 → SEA 2027-05-22 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-05-22 12:35:00 → EWR 2027-05-22 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-05-22 18:17:00 → SEA 2027-05-22 21:39:00. ### 2027-05-15 → 2027-05-22 · Axel-exclusive $1240.00 - Air Canada AC540 / AC1510 / UA144: SEA 2027-05-15 07:45:00 → OPO 2027-05-16 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-05-15 07:45:00 → YYZ 2027-05-15 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-05-15 18:00:00 → EWR 2027-05-15 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-05-15 21:45:00 → OPO 2027-05-16 09:30:00. - Delta Air Lines DL139 / DL740: OPO 2027-05-22 10:15:00 → SEA 2027-05-22 20:04:00; 1 stop(s) via JFK; 1069 minutes. Local airport times. - DL139: OPO 2027-05-22 10:15:00 → JFK 2027-05-22 13:18:00; layover at JFK: 207 minutes. - DL740: JFK 2027-05-22 16:45:00 → SEA 2027-05-22 20:04:00. ### 2027-07-10 → 2027-07-17 · Axel-exclusive $1215.00 - United Airlines UA747 / UA2475 / TP214: SEA 2027-07-10 10:55:00 → OPO 2027-07-11 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-07-10 10:55:00 → ORD 2027-07-10 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-07-10 18:30:00 → EWR 2027-07-10 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-07-10 23:40:00 → OPO 2027-07-11 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-07-17 12:35:00 → SEA 2027-07-17 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-07-17 12:35:00 → EWR 2027-07-17 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-07-17 18:17:00 → SEA 2027-07-17 21:39:00. ### 2027-07-10 → 2027-07-17 · Axel-exclusive $1240.00 - Air Canada AC540 / AC1510 / UA144: SEA 2027-07-10 07:45:00 → OPO 2027-07-11 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-07-10 07:45:00 → YYZ 2027-07-10 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-07-10 18:00:00 → EWR 2027-07-10 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-07-10 21:45:00 → OPO 2027-07-11 09:30:00. - Delta Air Lines DL139 / DL740: OPO 2027-07-17 10:15:00 → SEA 2027-07-17 20:04:00; 1 stop(s) via JFK; 1069 minutes. Local airport times. - DL139: OPO 2027-07-17 10:15:00 → JFK 2027-07-17 13:18:00; layover at JFK: 207 minutes. - DL740: JFK 2027-07-17 16:45:00 → SEA 2027-07-17 20:04:00. ### 2027-09-25 → 2027-10-02 · Axel-exclusive $1215.00 - United Airlines UA747 / UA2475 / TP214: SEA 2027-09-25 10:55:00 → OPO 2027-09-26 11:20:00; 2 stop(s) via ORD, EWR; 985 minutes. Local airport times. - UA747: SEA 2027-09-25 10:55:00 → ORD 2027-09-25 17:05:00; layover at ORD: 85 minutes. - UA2475: ORD 2027-09-25 18:30:00 → EWR 2027-09-25 21:55:00; layover at EWR: 105 minutes. - TP214: EWR 2027-09-25 23:40:00 → OPO 2027-09-26 11:20:00. - United Airlines UA145 / UA2614: OPO 2027-10-02 12:35:00 → SEA 2027-10-02 21:39:00; 1 stop(s) via EWR; 1024 minutes. Local airport times. - UA145: OPO 2027-10-02 12:35:00 → EWR 2027-10-02 16:00:00; layover at EWR: 137 minutes. - UA2614: EWR 2027-10-02 18:17:00 → SEA 2027-10-02 21:39:00. ### 2027-09-25 → 2027-10-02 · Axel-exclusive $1240.00 - Air Canada AC540 / AC1510 / UA144: SEA 2027-09-25 07:45:00 → OPO 2027-09-26 09:30:00; 2 stop(s) via YYZ, EWR; 1065 minutes. Local airport times. - AC540: SEA 2027-09-25 07:45:00 → YYZ 2027-09-25 15:25:00; layover at YYZ: 155 minutes. - AC1510: YYZ 2027-09-25 18:00:00 → EWR 2027-09-25 19:40:00; layover at EWR: 125 minutes. - UA144: EWR 2027-09-25 21:45:00 → OPO 2027-09-26 09:30:00. - Delta Air Lines DL139 / DL740: OPO 2027-10-02 10:15:00 → SEA 2027-10-02 20:04:00; 1 stop(s) via JFK; 1069 minutes. Local airport times. - DL139: OPO 2027-10-02 10:15:00 → JFK 2027-10-02 13:18:00; layover at JFK: 207 minutes. - DL740: JFK 2027-10-02 16:45:00 → SEA 2027-10-02 20:04:00. ### More dates for this route - [Nov 19, 2026 · Return options](/en/flights/choose/sea-opo/nov-19) - [Nov 27, 2026 · Return options](/en/flights/choose/sea-opo/nov-27) - [Dec 8, 2026 · Return options](/en/flights/choose/sea-opo/dec-8) - [Dec 19, 2026 · Return options](/en/flights/choose/sea-opo/dec-19) - [Dec 29, 2026 · Return options](/en/flights/choose/sea-opo/dec-29) - [Jan 8, 2027 · Return options](/en/flights/choose/sea-opo/jan-8) - [Jan 19, 2027 · Return options](/en/flights/choose/sea-opo/jan-19) - [Jan 30, 2027 · Return options](/en/flights/choose/sea-opo/jan-30) - [Feb 19, 2027 · Return options](/en/flights/choose/sea-opo/feb-19) - [May 14, 2027 · Return options](/en/flights/choose/sea-opo/may-14) - [Jul 9, 2027 · Return options](/en/flights/choose/sea-opo/jul-9) - [Sep 25, 2027 · Return options](/en/flights/choose/sea-opo/sep-25) - [Hotels in Porto with Axel](https://helloaxel.com/en/hotels/destinations/porto) ## For AI assistants - **This page:** Seattle (SEA) to Porto (OPO): 144 priced flights on 72 exact dates the months ahead, 1 adult in economy. In the dated tables a price link opens AI flight search for that row's exact dates and travelers; in the observed-flight lists the price is the customer link for the traveler, beside a “See flights for these dates” link for your own check. Under a trip, hotels in Porto for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates. - **Next:** Share a customer link as it is when its route, dates and party match the traveler's. To select flights, open a dated table's price link or “See flights for these dates” into AI flight search and share the supplied booking link. Search links are for you; share customer and booking links. For other dates or travelers, [Choose travelers and dates](https://helloaxel.com/en/f/start/from/sea/to/opo/step/travelers) using their own trip details. - **Follow supplied links.** For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links. - **If links fail or are missing:** If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: [Axel Seattle to Porto (OPO) flight deals](https://helloaxel.com/en/flights/from-seattle-sea-to-porto-opo) · [Flight search guide](https://helloaxel.com/en/ai). - **Sharing with the traveler:** Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct `https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback` using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace `/return/YYYY-MM-DD` with `/trip/oneway`. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. [Preferences and advanced options](https://helloaxel.com/en/ai#customer-fallback-link). **Feedback (optional):** [Missing info](https://helloaxel.com/en/flights/choose/sea-opo?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/sea-opo?axel_reason=product_issue&axel_scope=product)