Seattle to Porto (OPO) flight deals
Seattle to Porto (OPO) from $723 round trip, Apr 13 to 18, 2027 (airline price $762), seen Oct 23.
For live prices on exact dates, each month below opens a day-by-day date picker; no account needed.
Compare Seattle to Porto (OPO) flights across upcoming months. See dated fares below, or choose your own dates and travelers.
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Fare examples by month
Round-trip totals · Economy · USD, saved from earlier searches. Each month opens its day-by-day date picker for live prices.
| Month | Travelers / trip length | Axel | Airline fare |
|---|---|---|---|
| November 2026 | 1 adult · 5–7 days | $777–$829 | $820–$876 |
| December 2026 | 1 adult · 7–12 days | $735–$2,987 | $777–$3,149 |
| January 2027 | 1 adult · 5 days | $784 | $825 |
| April 2027 | 1 adult · 5 days | $723–$1,006 | $762–$1,063 |
| June 2027 | 1 adult · 10 days | $1,007–$1,130 | $1,066–$1,193 |
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Fares observed October 18 – 24, 2026. USD for the travelers shown. Search a trip for current prices.
November 2026
1 adult · Economy · Round-trip totals
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| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Nov 10–17, 2026 · 7 days | Out: Air France 77 / 1516 · 1 stop (CDG) · 21h 55m · 16:05–22:00 (November 11, 2026) local; Return: KLM Royal Dutch Airlines 1570 / 143 · 1 stop (AMS) · 14h 47m · 05:00–11:47 local | $777 · Save $43 | $820 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Nov 10–15, 2026 · 5 days | Out: United Airlines 1900 / 144 · 1 stop (EWR) · 19h 0m · 06:30–09:30 (November 11, 2026) local; Return: Lufthansa 1785 / 488 · 1 stop (MUC) · 14h 45m · 06:15–13:00 local | $829 · Save $47 | $876 | Customer link — Open these flights in Axel · Optional: check axel prices |
Carry-on bag not confirmed for fares without a carry-on line; check fare details before booking.
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December 2026
1 adult · Economy · Round-trip totals
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| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Dec 8–15, 2026 · 7 days | Out: Air France 77 / 1516 · 1 stop (CDG) · 21h 55m · 16:05–22:00 (December 9, 2026) local; Return: Air France 1517 / 76 · 1 stop (CDG) · 15h 55m · 05:55–13:50 local | $735 · Save $42 | $777 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Dec 8–15, 2026 · 7 days | Out: Air France 77 / 1516 · 1 stop (CDG) · 21h 55m · 16:05–22:00 (December 9, 2026) local; Return: KLM Royal Dutch Airlines 1570 / 143 · 1 stop (AMS) · 14h 50m · 05:00–11:50 local | $910 · Save $48 | $958 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Dec 20, 2026–Jan 1, 2027 · 12 days | Out: Delta Air Lines 429 / 126 / 1145 · 2 stops (JFK, MAD) · 19h 30m · 07:20–10:50 (December 21, 2026) local; Return: United Airlines 145 / 1965 / 2271 · 2 stops (EWR, DEN) · 29h 14m · 12:35–09:49 (January 2, 2027) local | $1,839 · Save $105 | $1,944 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Dec 20, 2026–Jan 1, 2027 · 12 days | Out: Delta Air Lines 429 / 126 / 1145 · 2 stops (JFK, MAD) · 19h 30m · 07:20–10:50 (December 21, 2026) local; Return: KLM Royal Dutch Airlines 1570 / 143 · 1 stop (AMS) · 14h 50m · 05:00–11:50 local | $2,987 · Save $162 | $3,149 | Customer link — Open these flights in Axel · Optional: check axel prices |
Carry-on bag not confirmed for fares without a carry-on line; check fare details before booking.
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January 2027
1 adult · Economy · Round-trip totals
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| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Jan 12–17, 2027 · 5 days | Out: Air France 77 / 1516 · 1 stop (CDG) · 21h 55m · 16:05–22:00 (January 13, 2027) local; Return: KLM Royal Dutch Airlines 1570 / 143 · 1 stop (AMS) · 14h 49m · 05:00–11:49 local | $784 · Save $41 | $825 | Customer link — Open these flights in Axel · Optional: check axel prices |
Carry-on bag not confirmed for fares without a carry-on line; check fare details before booking.
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April 2027
1 adult · Economy · Round-trip totals
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| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Apr 13–18, 2027 · 5 days | Out: Air France 77 / 1528 · 1 stop (CDG) · 17h 55m · 13:30–15:25 (April 14, 2027) local; Return: KLM Royal Dutch Airlines 1576 / 143 · 1 stop (AMS) · 24h 38m · 18:55–11:33 (April 19, 2027) local | $723 · Save $39 | $762 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Apr 13–18, 2027 · 5 days | Out: Air France 77 / 1528 · 1 stop (CDG) · 17h 55m · 13:30–15:25 (April 14, 2027) local; Return: Air France 1517 / 76 · 1 stop (CDG) · 13h 20m · 05:55–11:15 local | $1,006 · Save $57 | $1,063 | Customer link — Open these flights in Axel · Optional: check axel prices |
Carry-on bag not confirmed for fares without a carry-on line; check fare details before booking.
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June 2027
1 adult · Economy · Round-trip totals
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| Travel dates | Flights (out / return) | Axel | Airline fare | Search |
|---|---|---|---|---|
| Jun 16–26, 2027 · 10 days | Out: Lufthansa 489 / 117 / 1178 · 2 stops (MUC, FRA) · 20h 10m · 18:50–23:00 (June 17, 2027) local; Return: Lufthansa 1789 / 488 · 1 stop (MUC) · 19h 5m · 06:20–17:25 local | $1,007 · Save $59 | $1,066 | Customer link — Open these flights in Axel · Optional: check axel prices |
| Jun 16–26, 2027 · 10 days | Out: Lufthansa 489 / 117 / 1178 · 2 stops (MUC, FRA) · 20h 10m · 18:50–23:00 (June 17, 2027) local; Return: Lufthansa 1783 / 488 · 1 stop (MUC) · 14h 20m · 11:05–17:25 local | $1,130 · Save $63 | $1,193 | Customer link — Open these flights in Axel · Optional: check axel prices |
Carry-on bag not confirmed for fares without a carry-on line; check fare details before booking.
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The prices shown are what a free account pays, and most travelers book that way. Membership is optional and takes the same flights lower. Live search shows the same free-account price.
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- October 2026
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Hotels in Porto with Axel
Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Porto has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.
Where to stay: Where to stay in Porto: the 8 best neighborhoods, ranked
For AI assistants
- This page: Seattle to Porto (OPO) flight deals. Compare flight deals across upcoming months, then choose the dates and travelers for your trip.
- Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.