$241+ Cheap flights from Seattle (SEA) to the United Kingdom
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to United Kingdom with Cheapflights
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Cheapest flights from Seattle to United KingdomExplore the most affordable flight options available from Seattle to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Seattle to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:18 am
SEA
- LHR
2 stops15h 47m
Multiple Airlines
Mon 11/1612:15 pm
LHR
- SEA
1 stop12h 45m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$646
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:00 am
SEA
- LHR
2 stops16h 05m
Multiple Airlines
Tue 10/201:05 pm
LHR
- SEA
1 stop15h 35m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$647
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:00 am
SEA
- LHR
2 stops16h 05m
Multiple Airlines
Tue 10/131:05 pm
LHR
- SEA
1 stop12h 50m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$648
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:55 pm
SEA
- LHR
2 stops33h 00m
Scandinavian Airlines
Mon 9/216:40 am
LHR
- SEA
2 stops24h 40m
Scandinavian Airlines
Deal found 7/24![Scandinavian Airlines logo]()
$649
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- LHR
2 stops29h 20m
Multiple Airlines
Tue 8/256:40 am
LHR
- SEA
2 stops22h 27m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$650
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:18 am
SEA
- LHR
2 stops15h 47m
Multiple Airlines
Fri 1/1512:15 pm
LHR
- SEA
1 stop12h 45m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$651
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:18 am
SEA
- LHR
2 stops15h 47m
Multiple Airlines
Wed 11/257:40 am
LHR
- SEA
1 stop13h 20m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$652
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:55 pm
SEA
- STN
1 stop14h 40m
Multiple Airlines
Tue 10/137:10 am
STN
- SEA
2 stops23h 39m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$653
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
- STN
1 stop14h 40m
Multiple Airlines
Tue 9/157:10 am
STN
- SEA
1 stop14h 35m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$654
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:18 am
SEA
- LHR
2 stops15h 47m
Multiple Airlines
Wed 11/1112:15 pm
LHR
- SEA
1 stop12h 45m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$655
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/78:18 am
SEA
- LHR
2 stops15h 47m
Multiple Airlines
Wed 11/1812:15 pm
LHR
- SEA
1 stop12h 45m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$656
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:20 am
SEA
- LHR
2 stops17h 45m
Multiple Airlines
Mon 12/712:15 pm
LHR
- SEA
1 stop12h 45m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$657
Best flights from Seattle to United KingdomDiscover carefully curated flight deals from Seattle to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Seattle to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:15 am
SEA
- LHR
2 stops22h 20m
Scandinavian Airlines
Sun 9/206:40 am
LHR
- SEA
2 stops15h 05m
Scandinavian Airlines
Deal found 7/24![Scandinavian Airlines logo]()
$669
This Icelandair deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:00 pm
SEA
- GLA
1 stop10h 25m
Icelandair
Thu 10/152:20 pm
GLA
- SEA
1 stop14h 20m
Icelandair
Deal found 7/24![Icelandair logo]()
$796
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:35 pm
SEA
- LTN
1 stop14h 25m
Multiple Airlines
Mon 11/168:00 am
LTN
- SEA
1 stop17h 00m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$849
This Virgin Atlantic deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:45 pm
SEA
- LCY
1 stop14h 55m
Virgin Atlantic
Wed 10/285:05 pm
LCY
- SEA
1 stop26h 42m
Virgin Atlantic
Deal found 7/20![Virgin Atlantic logo]()
$877
This Turkish Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:15 pm
SEA
- STN
1 stop37h 25m
Turkish Airlines
Wed 10/146:55 am
STN
- SEA
1 stop18h 25m
Turkish Airlines
Deal found 7/23![Turkish Airlines logo]()
$879
This British Airways deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/126:45 pm
SEA
- NCL
1 stop16h 00m
British Airways
Thu 1/148:45 pm
NCL
- SEA
1 stop28h 05m
British Airways
Deal found 7/22![British Airways logo]()
$904
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:30 pm
SEA
- LHR
Nonstop9h 50m
Delta
Thu 9/2411:40 am
LHR
- SEA
Nonstop10h 20m
Delta
Deal found 7/21![Delta logo]()
$930
This Condor deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:05 pm
SEA
- LGW
1 stop16h 45m
Condor
Tue 8/187:45 pm
LGW
- SEA
1 stop27h 55m
Condor
Deal found 7/22![Condor logo]()
$946
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
SEA
- GLA
2 stops19h 10m
United Airlines
Tue 9/12:00 pm
GLA
- SEA
2 stops28h 01m
United Airlines
Deal found 7/25![United Airlines logo]()
$964
This Cheapflightsfares deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
SEA
- MAN
2 stops17h 15m
SWISS
Sun 8/306:40 pm
MAN
- SEA
2 stops36h 03m
SWISS
Deal found 7/20![SWISS logo]()
$988
This Cheapflightsfares deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:50 pm
SEA
- MAN
1 stop20h 25m
Lufthansa
Sun 8/309:00 am
MAN
- SEA
2 stops21h 42m
Lufthansa
Deal found 7/20![Lufthansa logo]()
$1,006
This Alaska Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:40 pm
SEA
- LHR
Nonstop9h 25m
Alaska Airlines
Mon 8/245:00 pm
LHR
- SEA
Nonstop10h 00m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$1,030
This JetBlue deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:40 am
SEA
- LGW
1 stop13h 55m
JetBlue
Sun 8/1612:20 pm
LGW
- SEA
1 stop18h 33m
JetBlue
Deal found 7/22![JetBlue logo]()
$1,101
This Scandinavian Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Tue 9/156:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/20![Scandinavian Airlines logo]()
$744
This Icelandair deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/811:25 pm
SEA
- GLA
1 stop30h 00m
Icelandair
Sun 8/162:20 pm
GLA
- SEA
1 stop29h 25m
Icelandair
Deal found 7/20![Icelandair logo]()
$796
This Scandinavian Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:55 pm
SEA
- LHR
2 stops20h 00m
Scandinavian Airlines
Sun 9/276:40 am
LHR
- SEA
2 stops15h 05m
Scandinavian Airlines
Deal found 7/20![Scandinavian Airlines logo]()
$758
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:35 pm
SEA
- LTN
1 stop16h 30m
Multiple Airlines
Sat 12/57:00 am
LTN
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$857
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:55 pm
SEA
- LGW
2 stops25h 50m
TAP AIR PORTUGAL
Thu 10/2910:40 am
LGW
- SEA
3 stops31h 36m
TAP AIR PORTUGAL
Deal found 7/25![TAP AIR PORTUGAL logo]()
$1,789
This Virgin Atlantic deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:59 am
SEA
- LGW
2 stops22h 01m
Virgin Atlantic
Tue 9/1510:35 am
LGW
- SEA
1 stop15h 13m
Virgin Atlantic
Deal found 7/25![Virgin Atlantic logo]()
$913
This Icelandair deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Wed 9/23:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Deal found 7/21![Icelandair logo]()
$833
This Scandinavian Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:55 pm
SEA
- LHR
2 stops33h 40m
Scandinavian Airlines
Sat 8/226:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/23![Scandinavian Airlines logo]()
$763
This Turkish Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:05 pm
SEA
- EDI
1 stop30h 35m
Turkish Airlines
Fri 12/1110:40 am
EDI
- SEA
1 stop38h 30m
Turkish Airlines
Deal found 7/22![Turkish Airlines logo]()
$938
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/99:50 pm
SEA
- LHR
Nonstop9h 45m
Delta
Tue 10/136:30 am
LHR
- SEA
1 stop13h 22m
Delta
Deal found 7/21![Delta logo]()
$951
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/292:35 pm
SEA
- LTN
1 stop16h 30m
Multiple Airlines
Sat 12/57:00 am
LTN
- SEA
1 stop18h 00m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$866
This British Airways deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:24 pm
SEA
- NCL
2 stops18h 46m
British Airways
Thu 9/176:00 am
NCL
- SEA
1 stop13h 35m
British Airways
Deal found 7/23![British Airways logo]()
$959
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:58 pm
SEA
- GLA
1 stop27h 12m
United Airlines
Tue 9/222:00 pm
GLA
- SEA
3 stops32h 24m
United Airlines
Deal found 7/22![United Airlines logo]()
$972
This Virgin Atlantic deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:30 pm
SEA
- LGW
1 stop11h 55m
Virgin Atlantic
Tue 8/2510:35 am
LGW
- SEA
2 stops19h 25m
Virgin Atlantic
Deal found 7/21![Virgin Atlantic logo]()
$922
This Condor deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:05 pm
SEA
- LGW
1 stop16h 45m
Condor
Sat 9/1210:20 am
LGW
- SEA
1 stop13h 40m
Condor
Deal found 7/20![Condor logo]()
$1,016
This Turkish Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:15 pm
SEA
- STN
1 stop37h 25m
Turkish Airlines
Sun 10/1810:50 am
STN
- SEA
1 stop38h 30m
Turkish Airlines
Deal found 7/21![Turkish Airlines logo]()
$939
This Mytrip deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:00 pm
SEA
- LTN
2 stops19h 20m
Multiple Airlines
Fri 10/26:20 am
LTN
- SEA
2 stops35h 20m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$870
Last-minute flights from Seattle to United KingdomDiscover last-minute flight deals from Seattle to United Kingdom. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to United Kingdom. Data last updated July 25, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- STN
2 stops26h 50m
Multiple Airlines
Mon 8/247:15 pm
STN
- SEA
3 stops33h 52m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$667
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
SEA
- LHR
2 stops29h 20m
Multiple Airlines
Tue 8/256:40 am
LHR
- SEA
2 stops22h 27m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$650
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:40 pm
SEA
- LGW
3 stops32h 25m
Multiple Airlines
Sun 8/309:20 am
LGW
- SEA
2 stops34h 25m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$702
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:00 pm
SEA
- LGW
3 stops35h 55m
Multiple Airlines
Sun 8/3010:15 am
LGW
- SEA
2 stops33h 30m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$660
This Justfly.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:55 pm
SEA
- LHR
1 stop18h 35m
Scandinavian Airlines
Wed 9/29:05 pm
LHR
- SEA
2 stops48h 40m
Scandinavian Airlines
Deal found 7/21![Scandinavian Airlines logo]()
$706
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:00 pm
SEA
- LGW
3 stops30h 10m
Multiple Airlines
Mon 8/319:20 am
LGW
- SEA
2 stops19h 20m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$701
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Thu 9/310:20 am
LHR
- SEA
1 stop35h 25m
Scandinavian Airlines
Deal found 7/23![Scandinavian Airlines logo]()
$696
This Cheapflightsfares deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:55 pm
SEA
- LHR
1 stop21h 45m
Scandinavian Airlines
Tue 9/16:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/25![Scandinavian Airlines logo]()
$705
This oojo deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Mon 8/316:40 pm
LHR
- SEA
1 stop27h 05m
Scandinavian Airlines
Deal found 7/21![Scandinavian Airlines logo]()
$708
This Cheapflightsfares deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Fri 9/116:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/22![Scandinavian Airlines logo]()
$691
This FlightHub deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Fri 9/46:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/23![Scandinavian Airlines logo]()
$704
This Gotogate deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:55 pm
SEA
- LHR
2 stops18h 55m
Scandinavian Airlines
Fri 9/116:40 am
LHR
- SEA
1 stop15h 05m
Scandinavian Airlines
Deal found 7/21![Scandinavian Airlines logo]()
$707
One-way flights from Seattle to United KingdomSearch for one-way flight options from Seattle to United Kingdom. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Seattle to United Kingdom. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:40 pm
SEA
- EDI
2 stops24h 45m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$241
This Mytrip deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 pm
SEA
- EDI
2 stops21h 35m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:40 pm
SEA
- MAN
2 stops23h 10m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
- EDI
2 stops36h 20m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:00 pm
SEA
- MAN
2 stops32h 30m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 pm
SEA
- EDI
2 stops27h 50m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$247
This Trip.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:35 pm
SEA
- EDI
2 stops21h 30m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:25 pm
SEA
- EDI
2 stops17h 35m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:25 pm
SEA
- EDI
2 stops40h 55m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 pm
SEA
- MAN
2 stops20h 40m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$252
This Mytrip deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm
SEA
- EDI
2 stops21h 25m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 pm
SEA
- MAN
2 stops20h 45m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$260
Find flight deals from Seattle to United Kingdom
Keep the following information in mind while searching for Seattle to United Kingdom flight deals. Data was last updated July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $646 (Kiwi.com) |
One-way from | $241 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,030 |
Good round-trip deal | $812 or less |
Good one-way deal | $375 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2026.
Use the filters below to find and compare flights from Seattle to the United Kingdom that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Fri 9/18
7:15 am-1:35 pm
2 stops22h 20m
London Heathrow
Sun 9/20
6:40 am-1:45 pm
2 stops15h 05m
$669
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Fri 8/28
3:55 pm-4:00 pm
1 stop16h 05m
London Heathrow
Tue 9/15
6:40 am-1:45 pm
1 stop15h 05m
$744
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Sun 9/13
3:55 pm-7:55 pm
2 stops20h 00m
London Heathrow
Sun 9/27
6:40 am-1:45 pm
2 stops15h 05m
$758
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Fri 8/14
3:55 pm-9:35 am
2 stops33h 40m
London Heathrow
Sat 8/22
6:40 am-1:45 pm
1 stop15h 05m
$763
SeattleGlasgow
SEA - GLA
SEAGLA
Seattle/Tacoma Intl
Sun 10/11
7:00 pm-1:25 pm
1 stop10h 25m
Glasgow Intl
Thu 10/15
2:20 pm-8:40 pm
1 stop14h 20m
$796
SeattleGlasgow
SEA - GLA
SEAGLA
Seattle/Tacoma Intl
Sat 8/8
11:25 pm-1:25 pm
1 stop30h 00m
Glasgow Intl
Sun 8/16
2:20 pm-11:45 am
1 stop29h 25m
$796
SeattleLondon
SEA - LGW
SEALGW
Seattle/Tacoma Intl
Wed 8/26
7:00 pm-2:40 pm
1 stop11h 40m
London Gatwick
Wed 9/2
3:40 pm-8:40 pm
1 stop13h 00m
$833
SeattleLondon
SEA - LTN
SEALTN
Seattle/Tacoma Intl
Thu 11/5
2:35 pm-1:00 pm
1 stop14h 25m
London Luton
Mon 11/16
8:00 am-5:00 pm
1 stop17h 00m
$849
SeattleLondon
SEA - LTN
SEALTN
Seattle/Tacoma Intl
Tue 12/1
2:35 pm-3:05 pm
1 stop16h 30m
London Luton
Sat 12/5
7:00 am-5:00 pm
1 stop18h 00m
$857
SeattleLondon
SEA - LTN
SEALTN
Seattle/Tacoma Intl
Sun 11/29
2:35 pm-3:05 pm
1 stop16h 30m
London Luton
Sat 12/5
7:00 am-5:00 pm
1 stop18h 00m
$866
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to United Kingdom
Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Seattle with our price prediction graph.
SEA-MAN
SEA-LGW
SEA-LHR
SEA-STN
SEA-GLA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to the United Kingdom
SEA-GB0
SEA-MAN
SEA-LGW
SEA-LHR
SEA-STN
What is the cheapest month to book a flight from Seattle to United Kingdom?
Currently, January is the cheapest month in which you can book a flight from Seattle to United Kingdom (average of $648). Flying from Seattle to United Kingdom in June is currently the most expensive (average of $1,216). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to GB?
Find hourly flight availability from Seattle to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to United Kingdom as you normally would.
Weekly flight availability from Seattle to United Kingdom
Explore weekly flight availability from Seattle to United Kingdom. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 25, 2026.
The most flights from SEA to GB0 are scheduled on a Tuesday (25 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (19 on average).
How often are flights from Seattle to the United Kingdom delayed?
About 14% of weekly flights between Seattle and United Kingdom have experienced delays in the past year, with the average delay time being 132 minutes.
What is the most punctual flight time for Seattle to the United Kingdom flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to the United Kingdom flights?
Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 6% of flights being delayed.
How far ahead should I book a flight from Seattle to United Kingdom?
The price you pay for your flight from Seattle to United Kingdom may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing United Kingdom
Get insights into the airlines that provide service to United Kingdom. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to United Kingdom. Reviews last updated July 25, 2026.
Read reviews from past customers who have flown Delta,Virgin Atlantic, andAer Lingus from Seattle to the United Kingdom. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to United Kingdom
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Complete your trip
Complete your trip to United Kingdom by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to United Kingdom by cabin class
Find flights from Seattle to United Kingdom, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and United Kingdom flights
Browse other Seattle and United Kingdom flight options. Last updated on July 25, 2026.
Popular flight searches
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Seattle to United Kingdom flights
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Consider these flights traveling to United Kingdom regions.
Top 10 airlines flying from Seattle to United Kingdom
Discover the top 10 airlines that operate flights from Seattle to United Kingdom. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$481 | Average$980 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$484 | Average$767 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$515 | Average$839 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$517 | Average$903 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$520 | Average$807 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$533 | Average$1,062 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$557 | Average$935 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$560 | Average$694 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$563 | Average$781 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$580 | Average$808 | FlexibilityNo cancel fee | On-time77% |