$411+ Cheap flights from London (LON) to Washington
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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
May 30 — Jun 61
Round-trip
1 adult, Economy
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Cheapest flights from London to WashingtonExplore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/309:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Tue 6/1611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/29![Icelandair logo]()
$703
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 6/281:00 pm
LGW
- SEA
1 stop30h 45m
Icelandair
Thu 7/167:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 4/26![Icelandair logo]()
$704
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 6/269:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Tue 7/143:40 pm
SEA
- LHR
1 stop12h 15m
Icelandair
Deal found 4/26![Icelandair logo]()
$704
This Icelandair deal was found by Cheapflights users on 4/28. 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.
Thu 6/251:00 pm
LGW
- SEA
1 stop12h 55m
Icelandair
Thu 7/97:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 4/28![Icelandair logo]()
$705
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 6/229:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Tue 7/2111:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/27![Icelandair logo]()
$705
This Icelandair deal was found by Cheapflights users on 4/26. 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 6/263:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Sun 7/57:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 4/26![Icelandair logo]()
$706
This Icelandair deal was found by Cheapflights users on 4/28. 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 6/299:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Wed 7/1511:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/28![Icelandair logo]()
$706
This Icelandair deal was found by Cheapflights users on 4/28. 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 6/281:00 pm
LGW
- SEA
1 stop30h 45m
Icelandair
Wed 7/157:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 4/28![Icelandair logo]()
$707
This Icelandair deal was found by Cheapflights users on 4/26. 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.
Tue 5/199:25 pm
LHR
- SEA
1 stop28h 30m
Icelandair
Sat 6/611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/26![Icelandair logo]()
$708
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/276:30 am
STN
- SEA
1 stop18h 40m
Multiple Airlines
Wed 6/37:10 pm
SEA
- STN
1 stop20h 10m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$709
This Icelandair deal was found by Cheapflights users on 4/28. 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 5/319:25 pm
LHR
- SEA
1 stop31h 15m
Icelandair
Tue 6/1611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/28![Icelandair logo]()
$709
This Icelandair deal was found by Cheapflights users on 4/28. 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 5/313:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Tue 6/1611:25 pm
SEA
- LGW
1 stop28h 20m
Icelandair
Deal found 4/28![Icelandair logo]()
$710
Best flights from London to WashingtonDiscover carefully curated flight deals from London to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
Discover carefully curated flight deals from London to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
This Icelandair deal was found by Cheapflights users on 4/26. 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 6/281:00 pm
LGW
- SEA
1 stop30h 45m
Icelandair
Fri 7/103:40 pm
SEA
- LGW
1 stop15h 00m
Icelandair
Deal found 4/26![Icelandair logo]()
$707
This Delta deal was found by Cheapflights users on 4/26. 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.
Sat 6/275:45 pm
LHR
- SEA
Nonstop10h 16m
Delta
Tue 7/77:15 am
SEA
- LHR
1 stop15h 05m
Delta
Deal found 4/26![Delta logo]()
$814
This Virgin Atlantic deal was found by Cheapflights users on 4/28. 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 10/1310:35 am
LGW
- SEA
1 stop15h 12m
Virgin Atlantic
Tue 10/207:20 am
SEA
- LGW
2 stops18h 05m
Virgin Atlantic
Deal found 4/28![Virgin Atlantic logo]()
$825
This KLM deal was found by Cheapflights users on 4/27. 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 5/2811:45 am
LHR
- SEA
1 stop12h 45m
KLM
Sat 6/66:20 pm
SEA
- LHR
Nonstop9h 50m
KLM
Deal found 4/27![KLM logo]()
$826
This KLM deal was found by Cheapflights users on 4/28. 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.
Mon 8/2410:25 am
LGW
- SEA
1 stop15h 09m
Multiple Airlines
Tue 9/11:30 pm
SEA
- LGW
1 stop11h 55m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$848
This British Airways deal was found by Cheapflights users on 4/27. 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 7/289:50 am
LHR
- SEA
Nonstop9h 45m
British Airways
Fri 8/71:17 pm
SEA
- LHR
1 stop13h 13m
British Airways
Deal found 4/27![British Airways logo]()
$862
This SWISS deal was found by Cheapflights users on 4/30. 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.
Thu 10/89:25 am
LGW
- SEA
2 stops17h 07m
SWISS
Wed 10/147:00 am
SEA
- LGW
2 stops17h 25m
SWISS
Deal found 4/30![SWISS logo]()
$878
This Travcart deal was found by Cheapflights users on 4/27. 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 Travcart is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:20 pm
LGW
- PDX
1 stop32h 44m
JetBlue
Sat 9/52:20 pm
PDX
- LGW
1 stop35h 15m
JetBlue
Deal found 4/27![JetBlue logo]()
$963
This Turkish Airlines deal was found by Cheapflights users on 4/27. 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 10/76:55 am
STN
- SEA
1 stop18h 20m
Turkish Airlines
Thu 10/157:10 pm
SEA
- STN
1 stop37h 40m
Turkish Airlines
Deal found 4/27![Turkish Airlines logo]()
$975
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 5/1310:50 am
LHR
- PDX
2 stops19h 45m
United Airlines
Wed 5/207:15 am
PDX
- LHR
1 stop22h 55m
United Airlines
Deal found 4/27![United Airlines logo]()
$1,026
This Scandinavian Airlines deal was found by Cheapflights users on 4/30. 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 9/17:05 am
LHR
- PDX
3 stops19h 36m
Scandinavian Airlines
Tue 9/81:38 pm
PDX
- LHR
2 stops18h 22m
Scandinavian Airlines
Deal found 4/30![Scandinavian Airlines logo]()
$1,221
This Icelandair deal was found by Cheapflights users on 4/26. 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 5/313:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Fri 6/57:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 4/26![Icelandair logo]()
$707
This Delta deal was found by Cheapflights users on 4/29. 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 9/311:40 am
LHR
- SEA
Nonstop10h 20m
Delta
Thu 9/1711:50 am
SEA
- LHR
1 stop14h 50m
Delta
Deal found 4/29![Delta logo]()
$825
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 7/15:45 pm
LHR
- SEA
Nonstop10h 18m
Virgin Atlantic
Wed 7/1511:15 am
SEA
- LHR
1 stop15h 25m
Virgin Atlantic
Deal found 4/29![Virgin Atlantic logo]()
$854
This KLM deal was found by Cheapflights users on 4/26. 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.
Fri 8/146:15 am
LHR
- SEA
1 stop13h 00m
Multiple Airlines
Sat 8/229:55 pm
SEA
- LHR
Nonstop9h 40m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$862
This British Airways deal was found by Cheapflights users on 4/27. 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.
Sat 7/259:50 am
LHR
- SEA
Nonstop9h 45m
British Airways
Sun 8/91:54 pm
SEA
- LHR
1 stop34h 11m
British Airways
Deal found 4/27![British Airways logo]()
$868
This SWISS deal was found by Cheapflights users on 4/30. 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 6/39:15 am
LCY
- SEA
2 stops17h 15m
SWISS
Wed 10/211:16 pm
SEA
- LCY
2 stops20h 09m
SWISS
Deal found 4/30![SWISS logo]()
$907
This Delta deal was found by Cheapflights users on 4/29. 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 5/2810:00 am
LCY
- SEA
1 stop14h 30m
Delta
Wed 6/105:45 pm
SEA
- LCY
1 stop14h 55m
Delta
Deal found 4/29![Delta logo]()
$837
This Virgin Atlantic deal was found by Cheapflights users on 4/28. 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.
Thu 5/2810:25 am
LGW
- SEA
2 stops20h 20m
Virgin Atlantic
Sat 6/61:30 pm
SEA
- LGW
1 stop11h 50m
Virgin Atlantic
Deal found 4/28![Virgin Atlantic logo]()
$857
This Mytrip deal was found by Cheapflights users on 4/29. 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 6/158:50 am
LTN
- SEA
2 stops17h 55m
Multiple Airlines
Thu 7/163:40 pm
SEA
- LTN
2 stops23h 05m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$876
This Turkish Airlines deal was found by Cheapflights users on 4/30. 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 5/1310:50 am
LGW
- SEA
1 stop38h 25m
Turkish Airlines
Thu 5/217:10 pm
SEA
- LGW
1 stop34h 00m
Turkish Airlines
Deal found 4/30![Turkish Airlines logo]()
$980
This Globehunters deal was found by Cheapflights users on 4/27. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2612:20 pm
LGW
- PDX
1 stop18h 14m
JetBlue
Mon 6/2911:29 pm
PDX
- LGW
1 stop26h 06m
JetBlue
Deal found 4/27![JetBlue logo]()
$997
This KLM deal was found by Cheapflights users on 4/30. 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.
Tue 6/1610:00 am
LCY
- SEA
1 stop14h 24m
KLM
Mon 6/291:55 pm
SEA
- LCY
1 stop11h 35m
KLM
Deal found 4/30![KLM logo]()
$1,021
This SWISS deal was found by Cheapflights users on 4/29. 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.
Mon 6/19:25 am
LGW
- SEA
2 stops17h 05m
SWISS
Tue 6/1610:45 am
SEA
- LGW
2 stops23h 05m
SWISS
Deal found 4/29![SWISS logo]()
$937
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 5/3111:40 am
LHR
- SEA
Nonstop10h 20m
Delta
Sat 6/137:15 am
SEA
- LHR
1 stop15h 05m
Delta
Deal found 4/30![Delta logo]()
$855
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 7/15:00 pm
LGW
- SEA
1 stop26h 15m
Virgin Atlantic
Wed 7/151:30 pm
SEA
- LGW
1 stop18h 30m
Virgin Atlantic
Deal found 4/29![Virgin Atlantic logo]()
$870
This Icelandair deal was found by Cheapflights users on 4/28. 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.
Thu 9/39:25 pm
LHR
- PDX
1 stop28h 30m
Icelandair
Sat 9/193:30 pm
PDX
- LHR
1 stop12h 25m
Icelandair
Deal found 4/28![Icelandair logo]()
$973
This British Airways deal was found by Cheapflights users on 4/27. 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.
Mon 9/79:45 am
LHR
- PDX
1 stop16h 06m
British Airways
Wed 9/167:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Deal found 4/27![British Airways logo]()
$977
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/249:00 am
LTN
- SEA
1 stop16h 10m
Multiple Airlines
Wed 6/37:10 pm
SEA
- LTN
1 stop12h 15m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$892
This KLM deal was found by Cheapflights users on 4/26. 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.
Sat 9/2610:00 am
LCY
- SEA
1 stop14h 35m
KLM
Thu 10/221:45 pm
SEA
- LCY
1 stop11h 45m
KLM
Deal found 4/26![KLM logo]()
$1,027
Last-minute flights from London to WashingtonDiscover last-minute flight deals from London to Washington. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from London to Washington. Data last updated April 30, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 4/27. 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 5/93:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Tue 6/2311:25 pm
SEA
- LGW
1 stop28h 20m
Icelandair
Deal found 4/27![Icelandair logo]()
$712
This Icelandair deal was found by Cheapflights users on 4/26. 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.
Tue 5/199:25 pm
LHR
- SEA
1 stop28h 30m
Icelandair
Sat 6/611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/26![Icelandair logo]()
$708
This Icelandair deal was found by Cheapflights users on 4/26. 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.
Tue 5/199:25 pm
LHR
- SEA
1 stop28h 30m
Icelandair
Sun 5/317:00 pm
SEA
- LHR
1 stop32h 55m
Icelandair
Deal found 4/26![Icelandair logo]()
$710
This Mytrip deal was found by Cheapflights users on 4/26. 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 5/226:35 am
STN
- SEA
2 stops35h 05m
Multiple Airlines
Mon 5/253:40 pm
SEA
- STN
2 stops24h 40m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$710
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/276:30 am
STN
- SEA
1 stop18h 40m
Multiple Airlines
Wed 6/37:10 pm
SEA
- STN
1 stop20h 10m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$709
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/276:15 am
LTN
- SEA
1 stop18h 55m
Multiple Airlines
Wed 6/37:10 pm
SEA
- LTN
1 stop12h 15m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$712
This Icelandair deal was found by Cheapflights users on 4/29. 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 5/291:05 pm
LHR
- SEA
1 stop12h 50m
Icelandair
Tue 6/1611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/29![Icelandair logo]()
$705
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/309:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Tue 6/1611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/29![Icelandair logo]()
$703
This Icelandair deal was found by Cheapflights users on 4/26. 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 5/319:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Fri 6/511:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/26![Icelandair logo]()
$706
This Icelandair deal was found by Cheapflights users on 4/26. 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 5/313:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Sat 6/63:40 pm
SEA
- LGW
1 stop12h 05m
Icelandair
Deal found 4/26![Icelandair logo]()
$707
This Icelandair deal was found by Cheapflights users on 4/28. 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 5/319:25 pm
LHR
- SEA
1 stop31h 15m
Icelandair
Tue 6/1611:25 pm
SEA
- LHR
1 stop12h 55m
Icelandair
Deal found 4/28![Icelandair logo]()
$709
This Icelandair deal was found by Cheapflights users on 4/28. 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 5/313:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Tue 6/1611:25 pm
SEA
- LGW
1 stop28h 20m
Icelandair
Deal found 4/28![Icelandair logo]()
$710
One-way flights from London to WashingtonSearch for one-way flight options from London to Washington. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
Search for one-way flight options from London to Washington. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/1510:50 pm
STN
- PDX
3 stops47h 00m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 6/72:15 pm
STN
- PDX
3 stops55h 35m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/155:10 pm
LTN
- PDX
3 stops52h 40m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 5/1510:00 pm
LGW
- PDX
3 stops47h 50m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 6/1110:05 pm
STN
- PDX
3 stops47h 45m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/214:15 pm
STN
- PDX
2 stops53h 35m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 5/176:25 am
LTN
- PDX
2 stops39h 25m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/127:15 am
STN
- PDX
3 stops38h 35m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$431
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/211:10 pm
LGW
- PDX
2 stops56h 40m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/246:35 am
STN
- PDX
2 stops39h 15m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/113:15 pm
LTN
- PDX
3 stops54h 35m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 5/213:50 pm
LTN
- PDX
2 stops54h 00m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$440
Find flight deals from London to Washington
Keep the following information in mind while searching for London to Washington flight deals. Data was last updated April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $703 (Kiwi.com) |
One-way from | $393 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $732 |
Good round-trip deal | $835 or less |
Good one-way deal | $768 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from London to Washington 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 April 30, 2026.
Use the filters below to find and compare flights from London to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Sun 6/28
1:00 pm-11:45 am
1 stop30h 45m
Seattle/Tacoma Intl
Fri 7/10
3:40 pm-2:40 pm
1 stop15h 00m
$707
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Sun 5/31
3:40 pm-11:45 am
1 stop28h 05m
Seattle/Tacoma Intl
Fri 6/5
7:00 pm-2:40 pm
1 stop11h 40m
$707
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sat 6/27
5:45 pm-8:01 pm
Nonstop10h 16m
Seattle/Tacoma Intl
Tue 7/7
7:15 am-6:20 am
1 stop15h 05m
$814
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Tue 10/13
10:35 am-5:47 pm
1 stop15h 12m
Seattle/Tacoma Intl
Tue 10/20
7:20 am-9:25 am
2 stops18h 05m
$825
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 9/3
11:40 am-2:00 pm
Nonstop10h 20m
Seattle/Tacoma Intl
Thu 9/17
11:50 am-10:40 am
1 stop14h 50m
$825
Quickest round-trip
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 5/28
11:45 am-4:30 pm
1 stop12h 45m
Seattle/Tacoma Intl
Sat 6/6
6:20 pm-12:10 pm
Nonstop9h 50m
$826
LondonSeattle
LCY - SEA
LCYSEA
London City
Thu 5/28
10:00 am-4:30 pm
1 stop14h 30m
Seattle/Tacoma Intl
Wed 6/10
5:45 pm-4:40 pm
1 stop14h 55m
$837
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Mon 8/24
10:25 am-5:34 pm
1 stop15h 09m
Seattle/Tacoma Intl
Tue 9/1
1:30 pm-9:25 am
1 stop11h 55m
$848
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 7/1
5:45 pm-8:03 pm
Nonstop10h 18m
Seattle/Tacoma Intl
Wed 7/15
11:15 am-10:40 am
1 stop15h 25m
$854
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sun 5/31
11:40 am-2:00 pm
Nonstop10h 20m
Seattle/Tacoma Intl
Sat 6/13
7:15 am-6:20 am
1 stop15h 05m
$855
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from London to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from London with our price prediction graph.
STN-PDX
LTN-PDX
LGW-PDX
LHR-SEA
LGW-SEA
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 London to Washington
LON-USWA
STN-PDX
LTN-PDX
LGW-PDX
LHR-SEA
How far ahead should I book a flight from London to State of Washington?
Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from London to State of Washington?
Currently, February is the cheapest month in which you can book a flight from London to State of Washington (average of $390). Flying from London to State of Washington in October is currently the most expensive (average of $4,187). 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 LON to WA?
Find hourly flight availability from London to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2026.
When flying from London to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London to State of Washington
Explore weekly flight availability from London to Washington. 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 April 30, 2026.
The most flights from LON to USWA are scheduled on a Wednesday (21 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (16 on average).
How much does it cost to fly round-trip from London to State of Washington?
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated April 30, 2026.
Read through reviews of airlines operating flights from London to Washington, such as Delta,Air France, andVirgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Comfort
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from London to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for London to Washington
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Complete your trip
Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from London to Washington by cabin class
Find flights from London to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.
London and Washington flights
Browse other London and Washington flight options. Last updated on April 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
London to Washington flights
Consider these flights traveling from London to Washington.
Top 5 airlines flying from London to Washington
Discover the top 5 airlines that operate flights from London to Washington. 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 April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$403 | Average$625 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$574 | Average$894 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$600 | Average$1,009 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$618 | Average$985 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$671 | Average$869 | FlexibilityNo cancel fee | On-time70% |