| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min |  Icelandair |  | $442 | ||
| Best option Washington DC London Heathrow | Outbound 09/09/25 direct AY5532 07h 25min | Return 10/08/25 direct AY5533 08h 15min |  Finnair |  | $595 | ||
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | $445 | ||
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | ? | $467 | |
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | ? | $476 | |
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | $479 | ||
| Washington DC London Heathrow | Outbound 04/21/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 05/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | ? | $480 | |
| Washington DC London Heathrow | Outbound 09/22/25 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 10/15/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | ? | $492 | |
| Washington DC London Heathrow | Outbound 08/19/25 1 Stopover (KEF) FI0648, FI0454 16h 05min | Return 09/02/25 1 Stopover (KEF) FI0451, FI0649 14h 05min | Icelandair |  | $534 | ||
| Washington DC London Heathrow | Outbound 09/22/25 1 Stopover (LIS) TP0232, TP1356 11h 35min | Return 10/15/25 1 Stopover (LIS) TP1351, TP0231 12h 20min |  TAP Air Portugal |  | ? | $542 |
Stops
- Direct flight
Airline
- SAS Scandinavian Airlines
- Icelandair
- Virgin Atlantic Airways
- United Airlines
- Air Canada
Tips and tricks to help you find cheap flights from Washington DC to London Heathrow
Favorite airline: Aer Lingus
Aer Lingus is the most popular airline for flights from Washington DC to London Heathrow.
Aer Lingus
30 %
Icelandair
24 %
British Airways
17 %
Cheapest weekday: Thursday
Compared to other weekdays, flights are cheapest on Thursday.
Stopover flights are the cheapest connection
Compared to flights with a stopover, direct flights are $129.00 more expensive on this route.
non stop flight
1 stop
2 stops
07h 20min
18h 45min
21h 40min
562 $
433 $
599 $
Favourite connection: via Dublin
When booking flights from Washington DC to London Heathrow 33 % of travelers prefer to fly via Dublin.
Route
bookings
1 stopover Dublin
11h 00min, from 442 $
33 %
1 stopover Reykjavik-Keflavik International
18h 45min, from 433 $
27 %
Direct flights
07h 20min, from 562 $
22 %
Important flight information
Flight information: Washington DC - London Heathrow
| Roundtrip from | 441,36 $ |
|---|---|
| Flight duration | min. 07:00 / max. 07:25 |
| Return flight duration | min. 08:20/ max. 08:45 |
| Distance | 5908 km |
| Flights per week | 52 |
| Departure airport | Airport Washington DC - Dulles International Airport, DC (IAD) |
| Arrival airport | Airport London Heathrow (LHR) |
| Destination country | Flights to United Kingdom |
Alternative routes to United Kingdom
- Flight Washington DC - Manchester from 709 $
Alternative flights to London Heathrow
- Flight Los Angeles - London Heathrow from 814 $
- Flight Boston - London Heathrow from 445 $
- Flight Detroit - London Heathrow from 464 $
- Flight Chicago O'Hare - London Heathrow from 584 $
- Flight Denver - London Heathrow from 588 $
- Flight Dallas - London Heathrow from 683 $
- Flight Newark - London Heathrow from 443 $
- Flight New York - London Heathrow from 438 $
- Flight New York - London Heathrow from 579 $
- Flight Cleveland - London Heathrow from 676 $
Flight destinations with a similar price
- Flight London Heathrow - Colombo from 686 $
- Flight London Heathrow - Abu Dhabi from 378 $
- Flight London Heathrow - Toronto from 420 $
- Flight London Heathrow - Dusseldorf from 148 $
- Flight London Heathrow - Frankfurt from 161 $
- Flight London Heathrow - Cologne from 120 $
- Flight London Heathrow - Barcelona from 126 $
- Flight London Heathrow - Ahmedabad from 683 $
- Flight London Heathrow - Amritsar from 789 $
- Flight London Heathrow - Erbil from 484 $
Flight destinations with a similar price
- Flight Washington DC - Oakland from 423 $
- Flight Washington DC - Belize City from 399 $
- Flight Washington DC - Fayetteville from 444 $
- Flight Washington DC - Montego Bay from 403 $
- Flight Washington DC - Mexico City from 458 $
- Flight Washington DC - Providenciales from 476 $