| 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 05/10/25 direct IB3589 07h 35min | Return 05/25/25 direct IB3590 08h 00min |  Iberia |  | $608 | ||
| 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 04/01/25 1 Stopover (KEF) FI0644, FI0454 18h 50min | Return 04/14/25 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | ? | $484 | |
| Washington DC London Heathrow | Outbound 04/01/25 1 Stopover (CPH) SK0926, SK0505 12h 55min | Return 04/14/25 1 Stopover (CPH) SK0502, SK0925 14h 39min |  SAS Scandinavian Airlines |  | $540 | ||
| Washington DC London Heathrow | Outbound 07/23/25 1 Stopover (KEF) FI0648, FI0450 31h 40min | Return 08/19/25 1 Stopover (KEF) FI0451, FI0645 11h 15min | Icelandair |  | ? | $542 |
Airline
- SAS Scandinavian Airlines
- United Airlines
- Virgin Atlantic Airways
- Icelandair
- 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 $ 673
Alternative flights to London Heathrow
- Flight Los Angeles - London Heathrow from $ 636
- Flight Dallas - London Heathrow from $ 732
- Flight Seattle-Tacoma - London Heathrow from $ 634
- Flight Baltimore - London Heathrow from $ 473
- Flight Philadelphia - London Heathrow from $ 689
- Flight Washington DC - London Heathrow from $ 574
- Flight Newark - London Heathrow from $ 440
- Flight Cleveland - London Heathrow from $ 707
- Flight Charlotte - London Heathrow from $ 654
Flight destinations with a similar price
- Flight London Heathrow - Colombo from $ 686
- Flight London Heathrow - Manila from $ 733
- Flight London Heathrow - Dusseldorf from $ 122
- Flight London Heathrow - Amman from $ 285
- Flight London Heathrow - Tangier from $ 225
- Flight London Heathrow - Cologne from $ 120
- Flight London Heathrow - Frankfurt from $ 161
- Flight London Heathrow - Toronto from $ 420
- Flight London Heathrow - Abu Dhabi from $ 378
- Flight London Heathrow - Barcelona from $ 126
Flight destinations with a similar price
- Flight Washington DC - Mexico City from $ 458
- Flight Washington DC - Cancun from $ 405
- Flight Washington DC - Montego Bay from $ 403
- Flight Washington DC - Lima from $ 434
- Flight Washington DC - Fayetteville from $ 433
- Flight Washington DC - Belize City from $ 399
- Flight Washington DC - Providenciales from $ 476
- Flight Washington DC - Oakland from $ 423
- Flight Washington DC - Managua from $ 400
- Flight Washington DC - St. Thomas from $ 470