Washington to London flights
Round trip · Economy · Prices per person in USD
Prices updated
Prices are low right now
$395 is $246 (38%) below the usual $641 for Washington → London.
Buy now or wait? We're still learning this route. We have 1 day of prices so far and need about a week to say whether to book or wait.
Not ready to book? Get an email when Washington → London drops below your price.Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| September 2026 | No fares found yet |
| October 2026 | $395 (cheapest month) |
| November 2026 | No fares found yet |
| December 2026 | $473 |
Cheapest dates in the next 4 months
Round trip, per person-
Oct 24 – 31 7 nights · leave Sat$395 −38% vs usual$395 −38% vs usual Book
Icelandair 1 stop · 9h 00m -
Dec 7 – 14 7 nights · leave Mon$473 −26% vs usual$473 −26% vs usual Book
Iberia 1 stop · 10h 10m -
Oct 2 – 5 3 nights · leave Fri$584 −9% vs usual$584 −9% vs usual Book
SAS Scandinavian 1 stop · 9h 50m -
Oct 10 – 17 7 nights · leave Sat$607 −5% vs usual$607 −5% vs usual Book
SWISS 1 stop · 9h 45m -
Oct 11 – 17 6 nights · leave Sun$627$627 Book
SWISS 1 stop · 9h 45m
-
Oct 2 – 6 4 nights · leave Fri$697 +9% vs usual$697 +9% vs usual Book
Aer Lingus 1 stop · 8h 20m -
Oct 2 – 4 2 nights · leave Fri$794 +24% vs usual$794 +24% vs usual Book
Brussels Airlines 2 stops · 12h 55m -
Oct 1 – 5 4 nights · leave Thu$815 +27% vs usual$815 +27% vs usual Book
Air France 1 stop · 8h 40m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Things to do in London
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Airport transfer to London
Fixed prices from LHR on KiwitaxiTo see transfer prices here, turn on partner content in .
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Plan the rest of your trip
London · Oct 24 – 31Travel insurance · EKTA Airport transfer · Kiwitaxi
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Good to know
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Washington to London: questions
How much is a flight from Washington to London?
The cheapest round trip we have found right now is $395, leaving October 24 and returning October 31. The usual price on this route is about $641, so this fare is 38% less. Prices are per person, economy, in USD.
About this route
We track round-trip economy fares from Washington (United States) to London (United Kingdom) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $395, departing October 24 and returning October 31, about 38% below the usual $641. Right now we're following 15 upcoming date combinations on this route. The cheapest month to fly in our data is October, from $395. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.