| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min |  Icelandair |  | $734 | ||
| Best option Washington DC London Heathrow | Outbound 08/19/26 direct OS7806 07h 25min | Return 08/28/26 direct OS7805 08h 15min |  Austrian Airlines |  | ? | $1,100 | |
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | $737 | ||
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | ? | $745 | |
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | $764 | ||
| Washington DC London Heathrow | Outbound 01/01/27 1 Stopover (KEF) FI0644, FI0450 10h 10min | Return 01/08/27 direct BA0217 08h 25min | Icelandair |  | ? | $768 | |
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | $769 | ||
| Washington DC London Heathrow | Outbound 01/01/27 1 Stopover (KEF) FI0644, FI0450 10h 10min | Return 01/08/27 direct BA0217 08h 25min | Icelandair |  | ? | $770 | |
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (KEF) FI0644, FI0450 10h 25min | Return 08/25/26 1 Stopover (KEF) FI0455, FI0645 26h 55min | Icelandair |  | ? | $822 | |
| Washington DC London Heathrow | Outbound 08/20/26 1 Stopover (LIS) TP0234, TP1358 18h 30min | Return 08/25/26 1 Stopover (LIS) TP1357, TP0231 25h 25min |  TAP Air Portugal |  | $826 |
Stops
- Direct flight
Airline
- Icelandair
- Austrian Airlines
- Iberia
- TAP Air Portugal
- Aer Lingus Irish Airlines
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 | $ 733,05 |
|---|---|
| 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 |
| City-Code - Arrival airport | Washington-DC - London Heathrow |
| Departure airport - Destination country | Washington DC - Dulles International Airport, DC - United Kingdom |
| Departure airport - City-Code | Washington DC - Dulles International Airport, DC - London |
Alternative flights to London Heathrow
- Flight Los Angeles - London Heathrow from $ 806
- Flight Kansas City - London Heathrow from $ 413
- Flight San Francisco - London Heathrow from $ 749
- Flight Charlotte - London Heathrow from $ 887
- Flight Richmond - London Heathrow from $ 968
- Flight Columbus - London Heathrow from $ 887
- Flight Miami - London Heathrow from $ 924
- Flight Chicago O'Hare - London Heathrow from $ 813
- Flight New York - London Heathrow from $ 782
- Flight Washington DC - London Heathrow from $ 821
Flight destinations with a similar price
- Flight London Heathrow - Toronto from $ 637
- Flight London Heathrow - Delhi from $ 711
- Flight London Heathrow - Amritsar from $ 1.069
- Flight London Heathrow - Singapore from $ 932
- Flight London Heathrow - Cologne from $ 267
- Flight London Heathrow - Stuttgart from $ 281
- Flight London Heathrow - Stockholm from $ 141
- Flight London Heathrow - Tel Aviv from $ 728
- Flight London Heathrow - Mumbai from $ 814
- Flight London Heathrow - Kuala Lumpur from $ 995
Flight destinations with a similar price
- Flight Washington DC - Berlin from $ 726
- Flight Washington DC - Jeddah from $ 791
- Flight Washington DC - Dusseldorf from $ 738
- Flight Washington DC - Stuttgart from $ 773
- Flight Washington DC - Dubai from $ 694
- Flight Washington DC - Frankfurt from $ 749
- Flight Washington DC - Munich from $ 746
- Flight Washington DC - Hamburg from $ 727
- Flight Washington DC - Karachi from $ 794