$218+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
Aug 13 — Aug 201
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 14, 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 14, 2026.
This Mytrip deal was found by Cheapflights users on 7/9. 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.
Wed 9/303:40 pm
SEA
- MAN
2 stops25h 10m
Multiple Airlines
Tue 10/69:25 am
MAN
- SEA
2 stops16h 30m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$570
This Mytrip deal was found by Cheapflights users on 7/10. 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.
Wed 9/303:40 pm
SEA
- EDI
2 stops22h 25m
Multiple Airlines
Sun 10/117:55 am
EDI
- SEA
2 stops20h 45m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$596
This Mytrip deal was found by Cheapflights users on 7/9. 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 10/43:40 pm
SEA
- GLA
2 stops21h 40m
Multiple Airlines
Sun 10/117:30 am
GLA
- SEA
2 stops18h 25m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$612
This Cheapflightsfares deal was found by Cheapflights users on 7/9. 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.
Sat 10/107:00 pm
SEA
- EDI
1 stop10h 20m
Icelandair
Sun 10/182:15 pm
EDI
- SEA
1 stop11h 40m
Icelandair
Deal found 7/9![Icelandair logo]()
$613
This Mytrip deal was found by Cheapflights users on 7/12. 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.
Wed 8/267:00 pm
SEA
- EDI
2 stops21h 20m
Multiple Airlines
Wed 9/210:55 am
EDI
- SEA
2 stops17h 45m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$619
This oojo deal was found by Cheapflights users on 7/9. 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.
Wed 9/307:00 pm
SEA
- MAN
1 stop32h 40m
Icelandair
Tue 10/61:05 pm
MAN
- SEA
1 stop15h 35m
Icelandair
Deal found 7/9![Icelandair logo]()
$621
This Mytrip deal was found by Cheapflights users on 7/10. 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 10/103:40 pm
SEA
- EDI
2 stops23h 50m
Multiple Airlines
Sun 10/187:55 am
EDI
- SEA
2 stops18h 00m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$626
This Gotogate deal was found by Cheapflights users on 7/13. 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 9/53:40 pm
SEA
- MAN
1 stop12h 00m
Icelandair
Fri 9/181:05 pm
MAN
- SEA
1 stop15h 35m
Icelandair
Deal found 7/13![Icelandair logo]()
$629
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 11/232:35 pm
SEA
- MAN
1 stop12h 10m
Icelandair
Mon 11/3011:55 am
MAN
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$636
This Icelandair deal was found by Cheapflights users on 7/12. 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.
Fri 11/272:35 pm
SEA
- MAN
1 stop12h 10m
Icelandair
Wed 12/211:55 am
MAN
- SEA
1 stop13h 05m
Icelandair
Deal found 7/12![Icelandair logo]()
$638
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 10/233:40 pm
SEA
- EDI
1 stop12h 10m
Multiple Airlines
Sun 11/17:45 am
EDI
- SEA
1 stop17h 15m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$647
This Kiwi.com deal was found by Cheapflights users on 7/9. 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
- EDI
1 stop14h 35m
Multiple Airlines
Tue 9/228:25 am
EDI
- SEA
1 stop13h 20m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$650
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 14, 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 14, 2026.
This Icelandair deal was found by Cheapflights users on 7/11. 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.
Mon 10/197:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Sat 10/3111:55 am
LGW
- SEA
1 stop13h 05m
Icelandair
Deal found 7/11![Icelandair logo]()
$746
This Scandinavian Airlines deal was found by Cheapflights users on 7/9. 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 8/233:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Fri 8/287:05 am
LHR
- SEA
2 stops14h 40m
Scandinavian Airlines
Deal found 7/9![Scandinavian Airlines logo]()
$746
This Booking.com deal was found by Cheapflights users on 7/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:55 pm
SEA
- BHX
1 stop13h 15m
Aer Lingus
Fri 10/99:10 am
BHX
- SEA
1 stop16h 00m
Aer Lingus
Deal found 7/11![Aer Lingus logo]()
$792
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Thu 8/205:50 am
SEA
- BHX
3 stops31h 15m
Multiple Airlines
Thu 8/279:30 pm
BHX
- SEA
2 stops24h 52m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$815
This Cheapflightsfares deal was found by Cheapflights users on 7/9. 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 9/228:20 pm
SEA
- INV
1 stop17h 15m
British Airways
Fri 10/910:25 am
INV
- SEA
1 stop16h 00m
British Airways
Deal found 7/9![British Airways logo]()
$822
This American Airlines deal was found by Cheapflights users on 7/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:40 pm
SEA
- INV
2 stops16h 45m
American Airlines
Fri 10/910:25 am
INV
- SEA
1 stop16h 00m
American Airlines
Deal found 7/9![American Airlines logo]()
$829
This Turkish Airlines deal was found by Cheapflights users on 7/10. 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.
Tue 8/187:15 pm
SEA
- STN
1 stop37h 25m
Turkish Airlines
Wed 9/305:45 pm
STN
- SEA
1 stop31h 35m
Turkish Airlines
Deal found 7/10![Turkish Airlines logo]()
$878
This KLM deal was found by Cheapflights users on 7/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:45 pm
SEA
- INV
1 stop20h 45m
KLM
Thu 10/86:20 am
INV
- SEA
1 stop13h 32m
KLM
Deal found 7/12![KLM logo]()
$883
This Delta deal was found by Cheapflights users on 7/12. 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.
Thu 9/247:16 am
SEA
- INV
2 stops21h 29m
Delta
Thu 10/86:20 am
INV
- SEA
1 stop13h 32m
Delta
Deal found 7/12![Delta logo]()
$888
This Cheapflightsfares deal was found by Cheapflights users on 7/9. 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 10/136:50 pm
SEA
- BHX
1 stop14h 20m
Lufthansa
Thu 10/226:05 am
BHX
- SEA
2 stops16h 17m
Lufthansa
Deal found 7/9![Lufthansa logo]()
$895
This United Airlines deal was found by Cheapflights users on 7/9. 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.
Sat 8/2211:59 pm
SEA
- LHR
1 stop23h 46m
United Airlines
Thu 8/279:00 am
LHR
- SEA
1 stop15h 59m
United Airlines
Deal found 7/9![United Airlines logo]()
$905
This SWISS deal was found by Cheapflights users on 7/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/141:19 pm
SEA
- BHX
2 stops34h 46m
SWISS
Mon 10/196:50 pm
BHX
- SEA
2 stops36h 06m
SWISS
Deal found 7/10![SWISS logo]()
$921
This Virgin Atlantic deal was found by Cheapflights users on 7/10. 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 9/165:45 pm
SEA
- LCY
1 stop14h 55m
Virgin Atlantic
Wed 9/238:25 am
LCY
- SEA
1 stop16h 10m
Virgin Atlantic
Deal found 7/10![Virgin Atlantic logo]()
$928
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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.
Mon 8/179:40 pm
SEA
- LHR
Nonstop9h 25m
Alaska Airlines
Mon 8/315:00 pm
LHR
- SEA
Nonstop10h 00m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$979
This Mytrip deal was found by Cheapflights users on 7/12. 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.
Thu 9/178:00 am
SEA
- BHX
2 stops17h 50m
Air Canada
Thu 12/106:10 am
BHX
- SEA
2 stops23h 47m
Air Canada
Deal found 7/12![Air Canada logo]()
$990
This Condor deal was found by Cheapflights users on 7/9. 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.
Sat 8/226:15 pm
SEA
- LGW
1 stop16h 30m
Condor
Sun 8/3010:20 am
LGW
- SEA
1 stop13h 20m
Condor
Deal found 7/9![Condor logo]()
$1,014
This JetBlue deal was found by Cheapflights users on 7/12. 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.
Mon 8/1711:40 am
SEA
- LGW
1 stop13h 55m
JetBlue
Mon 8/3112:20 pm
LGW
- SEA
1 stop18h 33m
JetBlue
Deal found 7/12![JetBlue logo]()
$1,099
This Icelandair deal was found by Cheapflights users on 7/9. 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.
Fri 8/711:25 pm
SEA
- LGW
1 stop28h 20m
Icelandair
Sun 8/301:00 pm
LGW
- SEA
1 stop12h 55m
Icelandair
Deal found 7/9![Icelandair logo]()
$755
This Mytrip deal was found by Cheapflights users on 7/9. 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 8/237:10 pm
SEA
- LTN
1 stop18h 30m
Multiple Airlines
Sun 8/3011:00 am
LTN
- SEA
1 stop14h 10m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$817
This Icelandair deal was found by Cheapflights users on 7/11. 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 7/267:00 pm
SEA
- LGW
1 stop32h 45m
Icelandair
Tue 8/183:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Deal found 7/11![Icelandair logo]()
$757
This Scandinavian Airlines deal was found by Cheapflights users on 7/9. 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.
Tue 8/43:55 pm
SEA
- LHR
1 stop16h 05m
Scandinavian Airlines
Sun 8/307:50 pm
LHR
- SEA
2 stops49h 55m
Scandinavian Airlines
Deal found 7/9![Scandinavian Airlines logo]()
$854
This Turkish Airlines deal was found by Cheapflights users on 7/13. 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 9/137:15 pm
SEA
- STN
1 stop37h 25m
Turkish Airlines
Wed 11/2510:55 am
STN
- SEA
1 stop38h 15m
Turkish Airlines
Deal found 7/13![Turkish Airlines logo]()
$878
This British Airways deal was found by Cheapflights users on 7/10. 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 9/228:20 am
SEA
- INV
2 stops22h 05m
British Airways
Sat 10/1011:10 am
INV
- SEA
1 stop32h 25m
British Airways
Deal found 7/10![British Airways logo]()
$881
This Delta deal was found by Cheapflights users on 7/9. 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 9/226:00 am
SEA
- INV
2 stops22h 45m
Delta
Sat 10/106:25 am
INV
- SEA
2 stops18h 23m
Delta
Deal found 7/9![Delta logo]()
$898
This KLM deal was found by Cheapflights users on 7/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:20 pm
SEA
- LHR
Nonstop9h 50m
KLM
Wed 8/199:55 am
LHR
- SEA
1 stop14h 32m
KLM
Deal found 7/13![KLM logo]()
$900
This Mytrip deal was found by Cheapflights users on 7/9. 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.
Thu 9/247:00 pm
SEA
- LTN
2 stops20h 10m
Multiple Airlines
Tue 9/297:55 am
LTN
- SEA
2 stops20h 45m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sat 12/2611:49 pm
SEA
- MAN
2 stops24h 51m
United Airlines
Tue 1/196:10 am
MAN
- SEA
3 stops23h 46m
United Airlines
Deal found 7/13![United Airlines logo]()
$940
This Icelandair deal was found by Cheapflights users on 7/13. 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 9/67:00 pm
SEA
- GLA
1 stop10h 40m
Icelandair
Thu 9/102:20 pm
GLA
- SEA
1 stop11h 35m
Icelandair
Deal found 7/13![Icelandair logo]()
$811
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/13. 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.
Tue 11/247:00 am
SEA
- LGW
2 stops18h 50m
TAP AIR PORTUGAL
Tue 12/84:35 pm
LGW
- SEA
2 stops36h 30m
TAP AIR PORTUGAL
Deal found 7/13![TAP AIR PORTUGAL logo]()
$1,966
This Delta deal was found by Cheapflights users on 7/13. 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.
Thu 8/277:15 am
SEA
- INV
2 stops21h 30m
Delta
Thu 9/36:20 am
INV
- SEA
2 stops18h 34m
Delta
Deal found 7/13![Delta logo]()
$898
Last-minute flights from Seattle to United KingdomDiscover last-minute flight deals from Seattle to United Kingdom. Data last updated July 14, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to United Kingdom. Data last updated July 14, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 7/11. 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 8/118:00 am
SEA
- EDI
3 stops22h 30m
Multiple Airlines
Tue 8/181:05 pm
EDI
- SEA
2 stops35h 54m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$658
This Mytrip deal was found by Cheapflights users on 7/12. 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.
Thu 8/203:40 pm
SEA
- MAN
2 stops17h 30m
Multiple Airlines
Wed 8/269:25 pm
MAN
- SEA
2 stops31h 15m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$660
This Cheapflightsfares deal was found by Cheapflights users on 7/13. 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.
Sun 8/233:40 pm
SEA
- LHR
1 stop20h 40m
Icelandair
Wed 9/29:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Deal found 7/13![Icelandair logo]()
$664
This Gotogate deal was found by Cheapflights users on 7/13. 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.
Mon 8/2411:25 pm
SEA
- LGW
1 stop31h 15m
Icelandair
Wed 9/23:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Deal found 7/13![Icelandair logo]()
$664
This oojo deal was found by Cheapflights users on 7/13. 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.
Mon 8/2411:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Wed 9/29:25 pm
LHR
- SEA
1 stop31h 15m
Icelandair
Deal found 7/13![Icelandair logo]()
$669
This oojo deal was found by Cheapflights users on 7/13. 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 8/253:40 pm
SEA
- LGW
1 stop15h 00m
Icelandair
Tue 9/81:00 pm
LGW
- SEA
1 stop15h 40m
Icelandair
Deal found 7/13![Icelandair logo]()
$662
This Gotogate deal was found by Cheapflights users on 7/13. 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.
Tue 8/2511:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Tue 9/81:05 pm
LHR
- SEA
1 stop12h 50m
Icelandair
Deal found 7/13![Icelandair logo]()
$663
This Mytrip deal was found by Cheapflights users on 7/12. 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.
Wed 8/267:00 pm
SEA
- EDI
2 stops21h 20m
Multiple Airlines
Wed 9/210:55 am
EDI
- SEA
2 stops17h 45m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$619
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Thu 8/277:00 pm
SEA
- STN
2 stops21h 30m
Multiple Airlines
Thu 9/37:20 am
STN
- SEA
2 stops21h 20m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$663
This oojo deal was found by Cheapflights users on 7/13. 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.
Thu 8/2711:25 pm
SEA
- LGW
1 stop31h 15m
Icelandair
Sat 9/53:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Deal found 7/13![Icelandair logo]()
$663
This Gotogate deal was found by Cheapflights users on 7/13. 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.
Fri 8/287:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Thu 9/101:00 pm
LGW
- SEA
1 stop12h 55m
Icelandair
Deal found 7/13![Icelandair logo]()
$668
This Cheapflightsfares deal was found by Cheapflights users on 7/13. 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 8/287:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Fri 9/113:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Deal found 7/13![Icelandair logo]()
$671
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 14, 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 14, 2026.
This Mytrip deal was found by Cheapflights users on 7/13. 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 7/13![Multiple Airlines logo]()
$218
This Mytrip deal was found by Cheapflights users on 7/13. 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 7/13![Multiple Airlines logo]()
$220
This Mytrip deal was found by Cheapflights users on 7/13. 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.
Fri 8/287:00 pm
SEA
- EDI
2 stops21h 20m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 7/2311:25 pm
SEA
- GLA
2 stops47h 50m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 7/9. 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 7/2311:25 pm
SEA
- MAN
2 stops38h 00m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 10/218:00 am
SEA
- BHX
3 stops31h 55m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 10/208:00 am
SEA
- BHX
3 stops22h 15m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 8/3111:25 pm
SEA
- GLA
3 stops49h 15m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/293:40 pm
SEA
- INV
3 stops36h 40m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$268
This oojo deal was found by Cheapflights users on 7/10. 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.
Sat 8/293:40 pm
SEA
- MAN
1 stop12h 00m
Icelandair
Deal found 7/10![Icelandair logo]()
$273
This oojo deal was found by Cheapflights users on 7/13. 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.
Mon 8/317:00 pm
SEA
- GLA
1 stop10h 25m
Icelandair
Deal found 7/13![Icelandair logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 8/297:06 pm
SEA
- EDI
3 stops37h 54m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$280
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 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $570 (Mytrip) |
One-way from | $218 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $1,019 |
Good round-trip deal | $807 or less |
Good one-way deal | $374 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 14, 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 - LGW
SEALGW
Seattle/Tacoma Intl
Mon 10/19
7:00 pm-2:40 pm
1 stop11h 40m
London Gatwick
Sat 10/31
11:55 am-6:00 pm
1 stop13h 05m
$746
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Sun 8/23
3:55 pm-4:00 pm
1 stop16h 05m
London Heathrow
Fri 8/28
7:05 am-1:45 pm
2 stops14h 40m
$746
SeattleLondon
SEA - LGW
SEALGW
Seattle/Tacoma Intl
Fri 8/7
11:25 pm-11:45 am
1 stop28h 20m
London Gatwick
Sun 8/30
1:00 pm-5:55 pm
1 stop12h 55m
$755
SeattleLondon
SEA - LGW
SEALGW
Seattle/Tacoma Intl
Sun 7/26
7:00 pm-11:45 am
1 stop32h 45m
London Gatwick
Tue 8/18
3:40 pm-11:45 am
1 stop28h 05m
$757
SeattleBirmingham
SEA - BHX
SEABHX
Seattle/Tacoma Intl
Thu 10/1
6:55 pm-4:10 pm
1 stop13h 15m
Birmingham
Fri 10/9
9:10 am-5:10 pm
1 stop16h 00m
$792
SeattleGlasgow
SEA - GLA
SEAGLA
Seattle/Tacoma Intl
Sun 9/6
7:00 pm-1:40 pm
1 stop10h 40m
Glasgow Intl
Thu 9/10
2:20 pm-5:55 pm
1 stop11h 35m
$811
SeattleBirmingham
SEA - BHX
SEABHX
Seattle/Tacoma Intl
Thu 8/20
5:50 am-9:05 pm
3 stops31h 15m
Birmingham
Thu 8/27
9:30 pm-2:22 pm
2 stops24h 52m
$815
SeattleLondon
SEA - LTN
SEALTN
Seattle/Tacoma Intl
Sun 8/23
7:10 pm-9:40 pm
1 stop18h 30m
London Luton
Sun 8/30
11:00 am-5:10 pm
1 stop14h 10m
$817
SeattleInverness
SEA - INV
SEAINV
Seattle/Tacoma Intl
Tue 9/22
8:20 pm-9:35 pm
1 stop17h 15m
Inverness
Fri 10/9
10:25 am-6:25 pm
1 stop16h 00m
$822
SeattleInverness
SEA - INV
SEAINV
Seattle/Tacoma Intl
Tue 9/22
1:40 pm-2:25 pm
2 stops16h 45m
Inverness
Fri 10/9
10:25 am-6:25 pm
1 stop16h 00m
$829
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-INV
SEA-LGW
SEA-LHR
SEA-STN
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-INV
SEA-LGW
SEA-LHR
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 $320). Flying from Seattle to United Kingdom in February is currently the most expensive (average of $2,561). 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 14, 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 14, 2026.
The most flights from SEA to GB0 are scheduled on a Tuesday (23 on average). You will have fewer flight options on Thursday, 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 130 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 14, 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.
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
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 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to United Kingdom flights
Consider these flights traveling from Seattle to United Kingdom.
Fly to United Kingdom regions
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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$480 | Average$961 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$484 | Average$768 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$515 | Average$804 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$517 | Average$804 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$517 | Average$751 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$517 | Average$950 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$528 | Average$1,054 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$547 | Average$842 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$560 | Average$694 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$580 | Average$808 | FlexibilityNo cancel fee | On-time77% |