# Seattle (SEA) to London (LHR), Dec 31, 2026: round trips from $875, one way from $648

Seattle (SEA) to London (LHR), Dec 31, 2026: round trips from $875, one way from $648 on Axel, checked Oct 29, 2026. Lowest published fares: $875 round trip, Axel-exclusive, Alaska Airlines, 1 stop, Dec 31, 2026 – Jan 5, 2027; $648 one way, Axel-exclusive, Alaska Airlines, 1 stop, Dec 31, 2026; 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.

**Prices by return date:** match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

**Date links** open published trip details for exploration. **Price links** open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

| Exact travel dates | Airline | Flights | Times, duration, stops | Total price | Price issued (UTC) |
| --- | --- | --- | --- | ---: | --- |
| [2026-12-31 · one way](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/one-way) | British Airways | BA48 | 18:45:00→12:10:00 9h 25m nonstop | [Axel-exclusive $756.00](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/trip/one-way/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 · one way](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/one-way) | Alaska Airlines | AS460 + BA238 | 21:20:00→19:00:00 13h 40m 1 stop via BOS | [Axel-exclusive $648.00](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/trip/one-way/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-02](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-2) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1144.05](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-2-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-02](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-2) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $1005.10](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-2-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-03](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-3) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1144.05](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-3-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-03](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-3) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $1005.10](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-3-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-04](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-4) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1144.05](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-4-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-04](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-4) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $1005.10](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-4-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-05](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-5) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-5-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-05](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-5) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-5-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-06](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-6) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-6-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-06](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-6) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-6-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-07](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-7) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-7-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-07](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-7) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-7-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-08](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-8) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-8-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-08](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-8) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-8-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-09](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-9) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-9-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-09](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-9) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-9-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-10](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-10) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-10-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-10](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-10) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-10-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-11](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-11) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-11-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-11](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-11) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-11-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-12](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-12) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-12-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-12](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-12) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-12-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-13](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-13) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-13-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-13](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-13) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-13-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-14](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-14) | British Airways | BA48 / BA49 | 18:45:00→12:10:00 9h 25m nonstop · 14:55:00→16:50:00 9h 55m nonstop | [Axel-exclusive $1000.50](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-14-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |
| [2026-12-31 → 2027-01-14](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31/jan-14) | Alaska Airlines | AS460 + BA238 / AS101 | 21:20:00→19:00:00 13h 40m 1 stop via BOS · 14:45:00→17:00:00 10h 15m nonstop | [Axel-exclusive $874.75](https://helloaxel.com/en/f/start/from/sea/to/lhr/depart/december-31-2026/return/january-14-2027/adults/1/cabin/economy) | 2026-10-29T01:15:29Z |

### Hotels in London for these trips

**Hotels:** under a trip, hotels in London 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 London for these nights (Dec 31 – Jan 2, 2027 · 2 nights · 2 adults, 1 room): 3★ [Reem Hotel, $390.50 total](https://helloaxel.com/en/hotels/london/reem-hotel-1219471/2026-12-31/2027-01-02/2-adults) · 4★ [Apex City of London Hotel, $634 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-02/2-adults) · 5★ [Vintry & Mercer, $938 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-02/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 3, 2027 · 3 nights · 2 adults, 1 room): 3★ [Reem Hotel, $555.50 total](https://helloaxel.com/en/hotels/london/reem-hotel-1219471/2026-12-31/2027-01-03/2-adults) · 4★ [Apex City of London Hotel, $847 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-03/2-adults) · 5★ [Vintry & Mercer, $1,208 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-03/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 4, 2027 · 4 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $663.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-04/2-adults) · 4★ [The Resident Victoria, $1,020.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-04/2-adults) · 5★ [Vintry & Mercer, $1,430 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-04/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 5, 2027 · 5 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $735.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-05/2-adults) · 4★ [Apex City of London Hotel, $1,230 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-05/2-adults) · 5★ [Vintry & Mercer, $1,676 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-05/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 6, 2027 · 6 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $813.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-06/2-adults) · 4★ [Apex City of London Hotel, $1,429 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-06/2-adults) · 5★ [Vintry & Mercer, $1,920 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-06/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 7, 2027 · 7 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $893.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-07/2-adults) · 4★ [Apex City of London Hotel, $1,633 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-07/2-adults) · 5★ [Vintry & Mercer, $2,175 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-07/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 8, 2027 · 8 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $966.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-08/2-adults) · 4★ [Apex City of London Hotel, $1,812 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-08/2-adults) · 5★ [Vintry & Mercer, $2,400 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-08/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 9, 2027 · 9 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,045.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-09/2-adults) · 4★ [Apex City of London Hotel, $1,979 total](https://helloaxel.com/en/hotels/london/apex-city-of-london-hotel-1032356/2026-12-31/2027-01-09/2-adults) · 5★ [Vintry & Mercer, $2,644 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-09/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 10, 2027 · 10 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,135.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-10/2-adults) · 4★ [The Resident Victoria, $2,155.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-10/2-adults) · 5★ [Vintry & Mercer, $2,905 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-10/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 11, 2027 · 11 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,196.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-11/2-adults) · 4★ [The Resident Victoria, $2,273.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-11/2-adults) · 5★ [Vintry & Mercer, $3,131 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-11/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 12, 2027 · 12 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,267.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-12/2-adults) · 4★ [The Resident Victoria, $2,434.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-12/2-adults) · 5★ [Vintry & Mercer, $3,374 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-12/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 13, 2027 · 13 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,344.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-13/2-adults) · 4★ [The Resident Victoria, $2,611.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-13/2-adults) · 5★ [Vintry & Mercer, $3,654 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-13/2-adults)
- Hotels in London for these nights (Dec 31 – Jan 14, 2027 · 14 nights · 2 adults, 1 room): 3★ [Point A Kensington Olympia, $1,421.50 total](https://helloaxel.com/en/hotels/london/point-a-kensington-olympia-1166066/2026-12-31/2027-01-14/2-adults) · 4★ [The Resident Victoria, $2,781.50 total](https://helloaxel.com/en/hotels/london/the-resident-victoria-1327544/2026-12-31/2027-01-14/2-adults) · 5★ [Vintry & Mercer, $3,924 total](https://helloaxel.com/en/hotels/london/vintry-mercer-1076935/2026-12-31/2027-01-14/2-adults)

[All hotels in London](https://helloaxel.com/en/hotels/destinations/london)

[Route overview: Seattle to London (LHR) flight deals](/en/flights/from-seattle-sea-to-london-lhr)

### 2026-12-31 · one way · Axel-exclusive $648.00

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.

### 2026-12-31 · one way · Axel-exclusive $756.00

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.

### 2026-12-31 → 2027-01-02 · Axel-exclusive $1005.10

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-02 14:45:00 → SEA 2027-01-02 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-02 · Axel-exclusive $1144.05

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-02 14:55:00 → SEA 2027-01-02 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-03 · Axel-exclusive $1005.10

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-03 14:45:00 → SEA 2027-01-03 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-03 · Axel-exclusive $1144.05

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-03 14:55:00 → SEA 2027-01-03 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-04 · Axel-exclusive $1005.10

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-04 14:45:00 → SEA 2027-01-04 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-04 · Axel-exclusive $1144.05

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-04 14:55:00 → SEA 2027-01-04 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-05 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-05 14:45:00 → SEA 2027-01-05 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-05 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-05 14:55:00 → SEA 2027-01-05 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-06 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-06 14:45:00 → SEA 2027-01-06 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-06 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-06 14:55:00 → SEA 2027-01-06 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-08 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-08 14:45:00 → SEA 2027-01-08 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-08 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-08 14:55:00 → SEA 2027-01-08 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-09 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-09 14:45:00 → SEA 2027-01-09 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-09 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-09 14:55:00 → SEA 2027-01-09 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-10 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-10 14:45:00 → SEA 2027-01-10 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-10 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-10 14:55:00 → SEA 2027-01-10 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-11 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-11 14:45:00 → SEA 2027-01-11 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-11 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-11 14:55:00 → SEA 2027-01-11 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-12 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-12 14:45:00 → SEA 2027-01-12 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-12 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-12 14:55:00 → SEA 2027-01-12 16:50:00; nonstop; 595 minutes. Local airport times.

### 2026-12-31 → 2027-01-14 · Axel-exclusive $874.75

- Alaska Airlines AS460 / BA238: SEA 2026-12-31 21:20:00 → LHR 2027-01-01 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
  - AS460: SEA 2026-12-31 21:20:00 → BOS 2027-01-01 05:40:00; layover at BOS: 110 minutes.
  - BA238: BOS 2027-01-01 07:30:00 → LHR 2027-01-01 19:00:00.
- Alaska Airlines AS101: LHR 2027-01-14 14:45:00 → SEA 2027-01-14 17:00:00; nonstop; 615 minutes. Local airport times.

### 2026-12-31 → 2027-01-14 · Axel-exclusive $1000.50

- British Airways BA48: SEA 2026-12-31 18:45:00 → LHR 2027-01-01 12:10:00; nonstop; 565 minutes. Local airport times.
- British Airways BA49: LHR 2027-01-14 14:55:00 → SEA 2027-01-14 16:50:00; nonstop; 595 minutes. Local airport times.

### Explore this route

- [All dates for this route](/en/flights/choose/sea-lhr)
- [Dec 30, 2026 · Return options](/en/flights/choose/sea-lhr/dec-30)
- [Jan 1, 2027 · Return options](/en/flights/choose/sea-lhr/jan-1)
- [Hotels in London with Axel](https://helloaxel.com/en/hotels/destinations/london)

## For AI assistants
- **This page:** Seattle (SEA) to London (LHR) · Dec 31, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in London 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:** each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: [Choose travelers and dates](https://helloaxel.com/en/f/start/from/sea/to/lhr/step/travelers) prices the requested trip.
- **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 London (LHR) flight deals](https://helloaxel.com/en/flights/from-seattle-sea-to-london-lhr) · [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-lhr/dec-31?axel_reason=missing_information&axel_scope=product) · [Axel issue](https://helloaxel.com/en/flights/choose/sea-lhr/dec-31?axel_reason=product_issue&axel_scope=product)