Title: Cheap Fly Play fights from Washington to London - Expedia.ca

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## Find the cheapest month to fly from Washington (WAS) to London (LON)

### February is typically the cheapest month to fly

From CA $464 - CA $1,066 per traveller.

## Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

[](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:LHR,departure:03/01/2026TANYT&leg2=from:LHR,to:IAD,departure:07/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE)

LHR

Heathrow

Cheapest

28 min

[Flights from CA $1,731

](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:LHR,departure:03/01/2026TANYT&leg2=from:LHR,to:IAD,departure:07/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 

__Flight from Washington to London (IAD - LGW) route information__
| Origin airport      | Washington Dulles Intl.                                                                                                                                                                                                                                                                          |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Destination airport | Gatwick                                                                                                                                                                                                                                                                                          |
| Airlines serving    | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic |
| Popular airline     | British Airways                                                                                                                                                                                                                                                                                  |
| Distance            | 5896 km                                                                                                                                                                                                                                                                                          |

\*Available to Expedia members.