$398+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
Jul 15 — Jul 221
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 June 15, 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 June 15, 2026.
This Expedia deal was found by Cheapflights users on 6/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:25 am
LCY
- SEA
1 stop16h 10m
KLM
Wed 9/1610:45 am
SEA
- LCY
2 stops14h 05m
KLM
Deal found 6/11![KLM logo]()
$693
This KLM deal was found by Cheapflights users on 6/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:40 am
LHR
- SEA
Nonstop10h 20m
KLM
Fri 9/189:50 pm
SEA
- LHR
Nonstop9h 45m
KLM
Deal found 6/11![KLM logo]()
$693
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:40 pm
LGW
- SEA
1 stop13h 00m
Icelandair
Fri 3/122:35 pm
SEA
- LGW
1 stop12h 20m
Icelandair
Deal found 6/11![Icelandair logo]()
$694
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:00 am
LCY
- SEA
1 stop14h 27m
Delta
Sun 8/301:50 pm
SEA
- LCY
1 stop11h 40m
Delta
Deal found 6/11![Delta logo]()
$694
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:45 pm
LHR
- SEA
Nonstop10h 18m
Delta
Wed 8/199:45 pm
SEA
- LHR
Nonstop9h 50m
Delta
Deal found 6/11![Delta logo]()
$694
This Virgin Atlantic deal was found by Cheapflights users on 6/12. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:25 am
LGW
- SEA
2 stops20h 55m
Virgin Atlantic
Thu 9/101:30 pm
SEA
- LGW
1 stop18h 30m
Virgin Atlantic
Deal found 6/12![Virgin Atlantic logo]()
$695
This TravelUp deal was found by Cheapflights users on 6/11. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:20 am
LCY
- SEA
1 stop34h 13m
Virgin Atlantic
Thu 8/65:45 pm
SEA
- LCY
1 stop31h 05m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$695
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Mon 8/318:45 pm
STN
- SEA
3 stops32h 22m
Multiple Airlines
Wed 12/92:35 pm
SEA
- STN
2 stops25h 00m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$695
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:30 am
LHR
- SEA
1 stop13h 07m
Delta
Mon 8/109:45 pm
SEA
- LHR
1 stop28h 30m
Delta
Deal found 6/11![Delta logo]()
$695
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:00 pm
LGW
- SEA
1 stop15h 40m
Icelandair
Thu 7/237:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 6/12![Icelandair logo]()
$696
This KLM deal was found by Cheapflights users on 6/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 am
LCY
- SEA
1 stop14h 27m
KLM
Mon 8/241:50 pm
SEA
- LCY
1 stop11h 40m
KLM
Deal found 6/11![KLM logo]()
$696
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Sun 7/263:40 pm
SEA
- LHR
1 stop12h 15m
Icelandair
Deal found 6/12![Icelandair logo]()
$696
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 June 15, 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 June 15, 2026.
This Delta deal was found by Cheapflights users on 6/13. 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.
Fri 9/45:45 pm
LHR
- SEA
Nonstop10h 25m
Delta
Wed 9/166:20 pm
SEA
- LHR
Nonstop9h 50m
Delta
Deal found 6/13![Delta logo]()
$695
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:40 am
LHR
- SEA
Nonstop10h 20m
KLM
Mon 9/76:20 pm
SEA
- LHR
Nonstop9h 50m
KLM
Deal found 6/10![KLM logo]()
$701
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 8/177:45 am
LHR
- SEA
2 stops19h 23m
United Airlines
Fri 9/46:10 pm
SEA
- LHR
2 stops18h 30m
United Airlines
Deal found 6/14![United Airlines logo]()
$708
This Virgin Atlantic deal was found by Cheapflights users on 6/14. 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 7/298:40 am
LHR
- SEA
1 stop15h 40m
Virgin Atlantic
Wed 8/59:45 pm
SEA
- LHR
Nonstop9h 50m
Virgin Atlantic
Deal found 6/14![Virgin Atlantic logo]()
$714
This SWISS deal was found by Cheapflights users on 6/12. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:45 am
LHR
- SEA
2 stops17h 47m
SWISS
Tue 9/223:30 pm
SEA
- LHR
2 stops18h 20m
SWISS
Deal found 6/12![SWISS logo]()
$719
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Mon 9/76:05 pm
LTN
- SEA
3 stops47h 35m
Multiple Airlines
Wed 9/167:00 pm
SEA
- LTN
2 stops19h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$836
This Icelandair deal was found by Cheapflights users on 6/12. 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.
Sat 9/263:40 pm
LGW
- SEA
2 stops36h 55m
Icelandair
Thu 10/227:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 6/12![Icelandair logo]()
$919
This Turkish Airlines deal was found by Cheapflights users on 6/14. 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.
Thu 9/245:35 pm
STN
- SEA
1 stop31h 45m
Turkish Airlines
Mon 9/287:15 pm
SEA
- STN
1 stop37h 35m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$1,024
This Finnair deal was found by Cheapflights users on 6/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/292:45 pm
LHR
- PDX
1 stop17h 02m
Finnair
Thu 7/97:30 pm
PDX
- LHR
Nonstop9h 30m
Finnair
Deal found 6/13![Finnair logo]()
$1,162
This British Airways deal was found by Cheapflights users on 6/14. 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 6/302:45 pm
LHR
- PDX
1 stop17h 02m
British Airways
Sat 7/117:30 pm
PDX
- LHR
Nonstop9h 30m
British Airways
Deal found 6/14![British Airways logo]()
$1,168
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:00 pm
LHR
- PDX
1 stop15h 22m
Alaska Airlines
Sat 8/295:41 pm
PDX
- LHR
1 stop13h 24m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$1,188
This Condor deal was found by Cheapflights users on 6/14. 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.
Sun 6/287:35 pm
LGW
- PDX
1 stop25h 35m
Condor
Sat 7/113:10 pm
PDX
- LGW
1 stop15h 30m
Condor
Deal found 6/14![Condor logo]()
$1,213
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/39:05 pm
LHR
- PDX
3 stops28h 04m
Scandinavian Airlines
Tue 7/1412:23 pm
PDX
- LHR
2 stops22h 07m
Scandinavian Airlines
Deal found 6/10![Scandinavian Airlines logo]()
$1,247
This Delta deal was found by Cheapflights users on 6/13. 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.
Mon 7/137:45 am
LCY
- SEA
1 stop16h 35m
Delta
Mon 7/201:45 pm
SEA
- LCY
1 stop11h 45m
Delta
Deal found 6/13![Delta logo]()
$703
This KLM deal was found by Cheapflights users on 6/14. 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 8/125:45 pm
LHR
- SEA
Nonstop10h 18m
KLM
Wed 9/96:20 pm
SEA
- LHR
Nonstop9h 50m
KLM
Deal found 6/14![KLM logo]()
$705
This Virgin Atlantic deal was found by Cheapflights users on 6/10. 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 10/215:00 pm
LGW
- SEA
2 stops25h 35m
Virgin Atlantic
Wed 11/112:05 pm
SEA
- LGW
1 stop17h 40m
Virgin Atlantic
Deal found 6/10![Virgin Atlantic logo]()
$716
This ChecknFly deal was found by Cheapflights users on 6/10. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:15 pm
LCY
- PDX
2 stops58h 14m
Iberia
Tue 7/146:39 am
PDX
- LCY
2 stops24h 36m
Iberia
Deal found 6/10![Iberia logo]()
$1,436
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:45 pm
LHR
- SEA
Nonstop10h 18m
Delta
Thu 7/239:50 pm
SEA
- LHR
Nonstop9h 45m
Delta
Deal found 6/10![Delta logo]()
$705
This SWISS deal was found by Cheapflights users on 6/10. 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 11/189:15 am
LCY
- SEA
2 stops21h 14m
SWISS
Thu 12/101:16 pm
SEA
- LCY
2 stops19h 49m
SWISS
Deal found 6/10![SWISS logo]()
$781
This Virgin Atlantic deal was found by Cheapflights users on 6/10. 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 10/2110:00 am
LCY
- SEA
2 stops18h 47m
Virgin Atlantic
Thu 10/293:25 pm
SEA
- LCY
1 stop20h 00m
Virgin Atlantic
Deal found 6/10![Virgin Atlantic logo]()
$727
This Delta deal was found by Cheapflights users on 6/14. 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.
Wed 8/125:45 pm
LHR
- SEA
Nonstop10h 18m
Delta
Thu 9/108:10 pm
SEA
- LHR
Nonstop9h 50m
Delta
Deal found 6/14![Delta logo]()
$705
This Mytrip deal was found by Cheapflights users on 6/12. 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 8/196:15 am
LTN
- SEA
3 stops35h 25m
Multiple Airlines
Mon 8/317:00 pm
SEA
- LTN
2 stops14h 10m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$879
This Virgin Atlantic deal was found by Cheapflights users on 6/12. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:25 am
LGW
- SEA
2 stops21h 01m
Virgin Atlantic
Sat 9/261:30 pm
SEA
- LGW
1 stop11h 50m
Virgin Atlantic
Deal found 6/12![Virgin Atlantic logo]()
$728
This SWISS deal was found by Cheapflights users on 6/14. 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.
Sat 9/59:00 am
LCY
- SEA
2 stops21h 43m
SWISS
Sat 9/193:30 pm
SEA
- LCY
2 stops17h 55m
SWISS
Deal found 6/14![SWISS logo]()
$837
This Delta deal was found by Cheapflights users on 6/12. 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.
Sun 7/126:30 pm
LHR
- SEA
Nonstop10h 12m
Delta
Sun 7/261:30 pm
SEA
- LHR
1 stop13h 00m
Delta
Deal found 6/12![Delta logo]()
$706
This Virgin Atlantic deal was found by Cheapflights users on 6/10. 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.
Tue 10/209:20 am
LCY
- SEA
2 stops19h 11m
Virgin Atlantic
Tue 10/276:00 am
SEA
- LCY
2 stops18h 15m
Virgin Atlantic
Deal found 6/10![Virgin Atlantic logo]()
$735
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Sun 10/49:00 am
LTN
- SEA
1 stop16h 10m
Multiple Airlines
Sun 10/117:10 pm
SEA
- LTN
1 stop18h 30m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$926
This SWISS deal was found by Cheapflights users on 6/12. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/219:25 am
LGW
- SEA
2 stops17h 07m
SWISS
Fri 9/113:30 pm
SEA
- LGW
2 stops18h 20m
SWISS
Deal found 6/12![SWISS logo]()
$854
This Delta deal was found by Cheapflights users on 6/13. 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.
Sun 8/306:30 pm
LHR
- SEA
Nonstop10h 16m
Delta
Sat 9/129:50 pm
SEA
- LHR
Nonstop9h 45m
Delta
Deal found 6/13![Delta logo]()
$713
This Icelandair deal was found by Cheapflights users on 6/11. 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.
Wed 8/123:40 pm
LGW
- PDX
1 stop28h 05m
Icelandair
Sat 9/263:30 pm
PDX
- LGW
1 stop15h 10m
Icelandair
Deal found 6/11![Icelandair logo]()
$1,109
Last-minute flights from London to WashingtonDiscover last-minute flight deals from London to Washington. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from London to Washington. Data last updated June 15, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/263:40 pm
LGW
- SEA
1 stop28h 05m
Icelandair
Thu 7/911:25 pm
SEA
- LGW
1 stop31h 15m
Icelandair
Deal found 6/12![Icelandair logo]()
$694
This Expedia deal was found by Cheapflights users on 6/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:20 am
LCY
- SEA
1 stop15h 00m
KLM
Tue 7/1410:35 am
SEA
- LCY
2 stops14h 55m
KLM
Deal found 6/14![KLM logo]()
$697
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:00 pm
LGW
- SEA
1 stop15h 40m
Icelandair
Fri 7/247:00 pm
SEA
- LGW
1 stop11h 40m
Icelandair
Deal found 6/12![Icelandair logo]()
$696
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/73:50 pm
LHR
- SEA
2 stops36h 47m
Iberia
Wed 7/1510:22 am
SEA
- LHR
1 stop16h 08m
Iberia
Deal found 6/11![Iberia logo]()
$698
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:00 pm
LGW
- SEA
1 stop32h 27m
Virgin Atlantic
Tue 7/281:30 pm
SEA
- LGW
1 stop11h 55m
Virgin Atlantic
Deal found 6/10![Virgin Atlantic logo]()
$697
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:30 am
LHR
- SEA
1 stop13h 50m
Lufthansa
Tue 7/288:15 am
SEA
- LHR
1 stop14h 40m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$697
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:25 pm
LHR
- SEA
1 stop22h 20m
Icelandair
Sun 7/263:40 pm
SEA
- LHR
1 stop12h 15m
Icelandair
Deal found 6/12![Icelandair logo]()
$696
This TravelUp deal was found by Cheapflights users on 6/11. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:20 am
LCY
- SEA
1 stop34h 13m
Virgin Atlantic
Thu 8/65:45 pm
SEA
- LCY
1 stop31h 05m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$695
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:45 pm
LHR
- SEA
Nonstop10h 18m
Delta
Thu 8/138:10 pm
SEA
- LHR
Nonstop9h 50m
Delta
Deal found 6/11![Delta logo]()
$693
This TravelUp deal was found by Cheapflights users on 6/13. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:45 pm
LHR
- SEA
Nonstop10h 18m
Virgin Atlantic
Wed 8/59:45 pm
SEA
- LHR
Nonstop9h 50m
Virgin Atlantic
Deal found 6/13![Virgin Atlantic logo]()
$695
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:00 pm
LGW
- SEA
1 stop26h 15m
Virgin Atlantic
Thu 8/61:30 pm
SEA
- LGW
1 stop11h 55m
Virgin Atlantic
Deal found 6/11![Virgin Atlantic logo]()
$698
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:45 pm
LHR
- SEA
Nonstop10h 18m
Delta
Wed 8/199:45 pm
SEA
- LHR
Nonstop9h 50m
Delta
Deal found 6/11![Delta logo]()
$694
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 June 15, 2026.
Search for one-way flight options from London to Washington. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 8/316:30 am
STN
- PDX
3 stops39h 20m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/184:20 pm
STN
- PDX
3 stops53h 30m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:50 pm
LTN
- PDX
3 stops50h 00m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:35 pm
LGW
- PDX
3 stops49h 15m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:30 am
STN
- PDX
3 stops39h 20m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:15 am
LTN
- PDX
3 stops39h 35m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 10/147:15 am
LTN
- PDX
3 stops36h 24m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 6/14. 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
STN
- PDX
3 stops48h 39m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:45 pm
STN
- PDX
3 stops51h 09m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$475
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Thu 10/153:30 pm
LTN
- PDX
3 stops57h 24m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:10 pm
LHR
- PDX
3 stops48h 40m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/109:10 pm
LHR
- PDX
3 stops48h 40m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$480
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 June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $693 (Flightcatchers) |
One-way from | $398 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $831 |
Good round-trip deal | $799 or less |
Good one-way deal | $657 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 June 15, 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
LHR - SEA
LHRSEA
London Heathrow
Fri 9/4
5:45 pm-8:10 pm
Nonstop10h 25m
Seattle/Tacoma Intl
Wed 9/16
6:20 pm-12:10 pm
Nonstop9h 50m
$695
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Fri 9/4
11:40 am-2:00 pm
Nonstop10h 20m
Seattle/Tacoma Intl
Mon 9/7
6:20 pm-12:10 pm
Nonstop9h 50m
$701
LondonSeattle
LCY - SEA
LCYSEA
London City
Mon 7/13
7:45 am-4:20 pm
1 stop16h 35m
Seattle/Tacoma Intl
Mon 7/20
1:45 pm-9:30 am
1 stop11h 45m
$703
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 8/12
5:45 pm-8:03 pm
Nonstop10h 18m
Seattle/Tacoma Intl
Wed 9/9
6:20 pm-12:10 pm
Nonstop9h 50m
$705
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Thu 7/16
5:45 pm-8:03 pm
Nonstop10h 18m
Seattle/Tacoma Intl
Thu 7/23
9:50 pm-3:35 pm
Nonstop9h 45m
$705
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 8/12
5:45 pm-8:03 pm
Nonstop10h 18m
Seattle/Tacoma Intl
Thu 9/10
8:10 pm-2:00 pm
Nonstop9h 50m
$705
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sun 7/12
6:30 pm-8:42 pm
Nonstop10h 12m
Seattle/Tacoma Intl
Sun 7/26
1:30 pm-10:30 am
1 stop13h 00m
$706
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Mon 8/17
7:45 am-7:08 pm
2 stops19h 23m
Seattle/Tacoma Intl
Fri 9/4
6:10 pm-8:40 pm
2 stops18h 30m
$708
Quickest round-trip
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Sun 8/30
6:30 pm-8:46 pm
Nonstop10h 16m
Seattle/Tacoma Intl
Sat 9/12
9:50 pm-3:35 pm
Nonstop9h 45m
$713
LondonSeattle
LHR - SEA
LHRSEA
London Heathrow
Wed 7/29
8:40 am-4:20 pm
1 stop15h 40m
Seattle/Tacoma Intl
Wed 8/5
9:45 pm-3:35 pm
Nonstop9h 50m
$714
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.
LTN-PDX
LGW-SEA
LHR-SEA
LHR-PDX
LCY-PDX
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
LTN-PDX
LGW-SEA
LHR-SEA
LHR-PDX
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 November is currently the most expensive (average of $1,631). 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 June 15, 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 June 15, 2026.
The most flights from LON to USWA are scheduled on a Tuesday (22 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from London to State of Washington?
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.
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 June 15, 2026.
Read through reviews of airlines operating flights from London to Washington, such as Delta,Virgin Atlantic, andAir France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
Boarding
8.1
Entertainment
7.8
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentRakshith,May 2026
TPE - SEA
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.
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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 June 15, 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 6 airlines flying from London to Washington
Discover the top 6 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 June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$403 | Average$620 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$534 | Average$888 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$536 | Average$1,012 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$618 | Average$985 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$670 | Average$908 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$671 | Average$895 | FlexibilityNo cancel fee | On-time70% |