$253+ Cheap flights from Washington to London (LON)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LON
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Washington to LondonExplore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/13. 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 11/12:35 pm -
1 stop16h 30m
Fri 11/66:00 am -
1 stop19h 00m
Deal found 9/13![Multiple Airlines logo]()
$639
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/93:40 pm -
2 stops25h 10m
Sun 10/185:55 am -
2 stops22h 45m
Deal found 9/13![Multiple Airlines logo]()
$641
This Mytrip deal was found by Cheapflights users on 9/13. 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 11/12:35 pm -
1 stop16h 35m
Fri 11/611:55 am -
1 stop13h 05m
Deal found 9/13![Multiple Airlines logo]()
$676
This Mytrip deal was found by Cheapflights users on 9/13. 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 11/17:45 am -
3 stops29h 50m
Fri 11/66:00 pm -
2 stops26h 00m
Deal found 9/13![Multiple Airlines logo]()
$741
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:10 pm -
1 stop19h 45m
Tue 10/201:10 pm -
2 stops37h 22m
Deal found 9/13![Multiple Airlines logo]()
$771
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
3 stops27h 15m
Sun 10/1810:00 pm -
2 stops22h 20m
Deal found 9/12![Multiple Airlines logo]()
$771
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:45 pm -
Nonstop9h 25m
Mon 11/162:55 pm -
Nonstop9h 55m
Deal found 9/14![British Airways logo]()
$771
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Tue 10/137:00 am -
2 stops17h 40m
Tue 10/209:15 am -
2 stops21h 41m
Deal found 9/13![SWISS logo]()
$772
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Mon 11/235:50 pm -
1 stop13h 10m
Mon 11/3010:25 am -
1 stop13h 30m
Deal found 9/13![Condor logo]()
$772
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:15 am -
2 stops26h 25m
Sun 10/116:40 am -
2 stops15h 05m
Deal found 9/13![Scandinavian Airlines logo]()
$772
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/110:50 am -
2 stops19h 45m
Sun 10/46:35 am -
2 stops15h 47m
Deal found 9/17![Multiple Airlines logo]()
$773
This KLM deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 9/255:30 pm -
Nonstop9h 50m
Wed 10/79:55 am -
1 stop14h 40m
Deal found 9/17![KLM logo]()
$773
Best flights from Washington to LondonDiscover carefully curated flight deals from Washington to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Washington to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Delta deal was found by Cheapflights users on 9/14. 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 10/285:45 pm -
Nonstop9h 55m
Sun 11/86:30 am -
1 stop13h 17m
Deal found 9/14![Delta logo]()
$774
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:45 pm -
Nonstop9h 35m
Thu 11/192:45 pm -
Nonstop10h 15m
Deal found 9/14![Alaska Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 9/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:00 am -
1 stop18h 10m
Sun 9/273:05 pm -
1 stop15h 42m
Deal found 9/12![United Airlines logo]()
$786
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:35 pm -
1 stop12h 15m
Tue 11/178:35 pm -
1 stop28h 25m
Deal found 9/15![Icelandair logo]()
$794
This Virgin Atlantic deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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.
Mon 3/11:20 pm -
1 stop21h 05m
Wed 3/318:15 pm -
1 stop22h 55m
Deal found 9/16![Virgin Atlantic logo]()
$801
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/1510:10 am -
3 stops30h 40m
Thu 10/225:30 pm -
3 stops33h 41m
Deal found 9/16![Multiple Airlines logo]()
$837
This SWISS deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/147:00 am -
2 stops17h 40m
Wed 10/219:15 am -
2 stops17h 17m
Deal found 9/16![SWISS logo]()
$880
This KLM deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/201:45 pm -
1 stop11h 45m
Fri 10/239:20 am -
1 stop15h 15m
Deal found 9/16![KLM logo]()
$881
This Turkish Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 10/57:15 pm -
1 stop37h 20m
Fri 10/167:25 am -
1 stop17h 55m
Deal found 9/13![Turkish Airlines logo]()
$888
This Condor deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/311:53 am -
2 stops23h 32m
Mon 11/1610:25 am -
2 stops16h 22m
Deal found 9/16![Condor logo]()
$1,195
This Scandinavian Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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.
Sat 10/311:20 am -
2 stops26h 20m
Sat 10/106:40 am -
3 stops21h 20m
Deal found 9/16![Scandinavian Airlines logo]()
$1,208
This Delta deal was found by Cheapflights users on 9/12. 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 9/245:30 pm -
Nonstop9h 50m
Thu 10/155:45 pm -
Nonstop10h 29m
Deal found 9/12![Delta logo]()
$781
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:45 pm -
Nonstop9h 35m
Tue 11/172:45 pm -
Nonstop10h 15m
Deal found 9/15![Alaska Airlines logo]()
$781
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/177:45 pm -
1 stop33h 35m
Sun 10/2510:00 am -
1 stop20h 17m
Deal found 9/17![United Airlines logo]()
$811
This Virgin Atlantic deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 11/124:50 pm -
Nonstop9h 50m
Mon 11/166:20 am -
1 stop16h 54m
Deal found 9/16![Virgin Atlantic logo]()
$821
This Delta deal was found by Cheapflights users on 9/14. 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 10/284:20 pm -
1 stop16h 25m
Sun 11/810:00 am -
1 stop13h 14m
Deal found 9/14![Delta logo]()
$793
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/162:35 pm -
1 stop14h 25m
Wed 12/238:00 am -
1 stop17h 00m
Deal found 9/14![Multiple Airlines logo]()
$878
This SWISS deal was found by Cheapflights users on 9/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:30 pm -
2 stops17h 55m
Tue 9/299:15 am -
2 stops17h 17m
Deal found 9/15![SWISS logo]()
$886
This Turkish Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 2/107:05 pm -
1 stop37h 25m
Mon 2/156:30 am -
1 stop18h 40m
Deal found 9/16![Turkish Airlines logo]()
$928
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:30 pm -
Nonstop9h 50m
Fri 10/96:30 am -
1 stop13h 22m
Deal found 9/15![Virgin Atlantic logo]()
$851
This Delta deal was found by Cheapflights users on 9/12. 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.
Wed 1/133:25 pm -
1 stop16h 20m
Sun 1/2410:00 am -
1 stop13h 13m
Deal found 9/12![Delta logo]()
$802
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Mon 11/92:45 pm -
2 stops19h 15m
Mon 11/168:10 am -
2 stops16h 50m
Deal found 9/12![Multiple Airlines logo]()
$883
This SWISS deal was found by Cheapflights users on 9/13. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 am -
2 stops21h 35m
Fri 10/169:15 am -
2 stops21h 41m
Deal found 9/13![SWISS logo]()
$896
This Turkish Airlines deal was found by Cheapflights users on 9/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:05 pm -
1 stop30h 50m
Tue 11/175:20 pm -
1 stop31h 50m
Deal found 9/15![Turkish Airlines logo]()
$930
This Icelandair deal was found by Cheapflights users on 9/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/212:45 pm -
1 stop12h 10m
Wed 11/2511:55 am -
1 stop13h 05m
Deal found 9/14![Icelandair logo]()
$1,049
This Virgin Atlantic deal was found by Cheapflights users on 9/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:35 pm -
1 stop19h 50m
Tue 11/108:05 pm -
1 stop23h 42m
Deal found 9/15![Virgin Atlantic logo]()
$880
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/511:42 pm -
2 stops29h 43m
Fri 10/166:20 am -
1 stop18h 50m
Deal found 9/13![Multiple Airlines logo]()
$887
This SWISS deal was found by Cheapflights users on 9/14. 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.
Wed 11/113:35 pm -
2 stops17h 30m
Tue 11/179:15 am -
2 stops21h 52m
Deal found 9/14![SWISS logo]()
$896
This Delta deal was found by Cheapflights users on 9/12. 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 9/205:30 pm -
Nonstop9h 50m
Tue 10/611:45 am -
1 stop12h 50m
Deal found 9/12![Delta logo]()
$823
This KLM deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/61:05 pm -
1 stop12h 25m
Fri 10/1610:00 am -
2 stops18h 00m
Deal found 9/16![KLM logo]()
$1,125
Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to London. Data last updated September 17, 2026 and is based on user searches.
This KLM deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 9/255:30 pm -
Nonstop9h 50m
Wed 10/79:55 am -
1 stop14h 40m
Deal found 9/17![KLM logo]()
$773
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/110:50 am -
2 stops19h 45m
Sun 10/46:35 am -
2 stops15h 47m
Deal found 9/17![Multiple Airlines logo]()
$773
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Mon 10/58:20 pm -
Nonstop9h 25m
Mon 10/129:50 am -
Nonstop9h 45m
Deal found 9/13![British Airways logo]()
$771
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:15 am -
2 stops26h 25m
Sun 10/116:40 am -
2 stops15h 05m
Deal found 9/13![Scandinavian Airlines logo]()
$772
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/93:40 pm -
2 stops25h 10m
Sun 10/185:55 am -
2 stops22h 45m
Deal found 9/13![Multiple Airlines logo]()
$641
This Booking.com deal was found by Cheapflights users on 9/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
3 stops27h 15m
Sun 10/1810:00 pm -
2 stops22h 20m
Deal found 9/12![Multiple Airlines logo]()
$771
This FlightHub deal was found by Cheapflights users on 9/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/132:10 pm -
1 stop19h 45m
Tue 10/201:10 pm -
2 stops37h 22m
Deal found 9/13![Multiple Airlines logo]()
$771
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Tue 10/137:00 am -
2 stops17h 40m
Tue 10/209:15 am -
2 stops21h 41m
Deal found 9/13![SWISS logo]()
$772
This KLM deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/131:45 pm -
1 stop11h 45m
Tue 10/2010:00 am -
1 stop14h 35m
Deal found 9/17![KLM logo]()
$774
This Delta deal was found by Cheapflights users on 9/14. 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 10/285:45 pm -
Nonstop9h 55m
Sun 11/86:30 am -
1 stop13h 17m
Deal found 9/14![Delta logo]()
$774
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” 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 10/287:00 pm -
1 stop12h 40m
Mon 11/911:55 am -
1 stop13h 05m
Deal found 9/16![Icelandair logo]()
$775
This Cheapflightsfares deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/303:35 pm -
1 stop12h 20m
Mon 11/911:55 am -
1 stop13h 05m
Deal found 9/17![Icelandair logo]()
$774
One-way flights from Washington to LondonSearch for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 10/313:45 pm -
2 stops36h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/193:30 pm -
2 stops35h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Thu 10/13:30 pm -
2 stops25h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/123:30 pm -
3 stops33h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Sat 10/313:45 pm -
2 stops35h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/123:30 pm -
3 stops46h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$283
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/123:30 pm -
2 stops23h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/313:45 pm -
3 stops33h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” 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 10/193:30 pm -
3 stops44h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$299
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/262:45 pm -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Icelandair logo]()
$302
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/123:30 pm -
1 stop15h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Icelandair logo]()
$302
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:45 pm -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Icelandair logo]()
$303
Find flight deals from Washington to London
Keep the following information in mind while searching for Washington to London flight deals. Data was last updated September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $639 (Mytrip) |
One-way from | $253 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $926 |
Good round-trip deal | $947 or less |
Good one-way deal | $433 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to London 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 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Washington to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandLondon
PDX Portland - STN London Stansted
PDXSTN
Portland
Mon 10/19
3:30 pm-11:05 am
2 stops35h 35m
London Stansted
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$256
PortlandLondon
PDX Portland - STN London Stansted
PDXSTN
Portland
Mon 10/12
3:30 pm-8:35 am
3 stops33h 05m
London Stansted
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$271
PortlandLondon
PDX Portland - STN London Stansted
PDXSTN
Portland
Sat 10/31
3:45 pm-8:35 am
3 stops33h 50m
London Stansted
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$288
PortlandLondon
PDX Portland - LTN London Luton
PDXLTN
Portland
Thu 10/1
3:30 pm-5:25 pm
3 stops41h 55m
London Luton
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$305
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Thu 10/1
3:30 pm-2:55 pm
2 stops39h 25m
London Gatwick
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$313
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Mon 10/12
3:30 pm-11:10 pm
3 stops23h 40m
London Gatwick
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$320
PortlandLondon
PDX Portland - LGW London Gatwick
PDXLGW
Portland
Mon 3/8
6:15 am-9:00 am
2 stops18h 45m
London Gatwick
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$344
PortlandLondon
PDX Portland - LCY London City
PDXLCY
Portland
Wed 3/3
1:20 pm-9:30 am
1 stop12h 10m
London City
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$352
PortlandLondon
PDX Portland - LCY London City
PDXLCY
Portland
Tue 1/5
1:39 pm-5:05 pm
2 stops19h 26m
London City
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$354
PortlandLondon
PDX Portland - LCY London City
PDXLCY
Portland
Mon 3/8
1:39 pm-5:05 pm
2 stops19h 26m
London City
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$356
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to London
Have a flexible travel schedule? Discover the best time to fly to London from Washington with our price prediction graph.
SEA-LTN
SEA-STN
SEA-LGW
SEA-LCY
SEA-LHR
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 Washington to London
USWA-LON
SEA-LTN
SEA-STN
SEA-LGW
SEA-LCY
What is the cheapest month to book a flight from State of Washington to London?
Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of $666). Flying from State of Washington to London in June is currently the most expensive (average of $1,218). 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 WA to LON?
Find hourly flight availability from Washington to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2026.
When flying from State of Washington to London, 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 State of Washington to London
Explore weekly flight availability from Washington to London. 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 September 17, 2026.
The most flights from USWA to LON are scheduled on a Tuesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 on average).
How much does it cost to fly round-trip from State of Washington to London?
Airfare is below average for this route at the moment.
State of Washington to London flights typically cost between $749 and $1,045 in November.The cheapest round-trip price found within the last 5 days was $639 on Multiple Airlines (Nov 1-Nov 6).
How far ahead should I book a flight from State of Washington to London?
The best time to book flights from State of Washington to London is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Related info for your journey
Find useful and relevant information for your journey from Washington to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsIlford
Dorking
Gatwick
Hounslow
Harrow
Wembley
Southend-on-Sea
Basingstoke
Watford
Dartford
Winchester
Croydon
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton
Harlow
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Other flights to London
Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Washington and London flights
Browse other Washington and London flight options. Last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Washington to London flights
Consider these flights traveling from Washington to London.
Top 10 airlines flying from Washington to London
Discover the top 10 airlines that operate flights from Washington to London. 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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$480 | Average$758 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$506 | Average$715 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$542 | Average$694 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$547 | Average$986 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$559 | Average$1,102 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$565 | Average$884 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$569 | Average$922 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$584 | Average$840 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$608 | Average$1,018 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$639 | Average$866 | FlexibilityNo cancel fee | On-time77% |