Flights from London Gatwick to Washington DC

Our cheapest offers for flights from London Gatwick to Washington DC

Here you can compare cheap flights from London Gatwick (LGW) to Washington DC (IAD) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Washington DC. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
London Gatwick
Washington DC
Outbound
03/09/25
1 Stopover (KEF)
FI0473, FI0649
11h 30min
Return
15/09/25
1 Stopover (KEF)
FI0644, FI0472
13h 05min
Icelandair
£566
London Gatwick
Washington DC
Outbound
08/06/25
1 Stopover (IST)
TK1998, TK0187
23h 30min
Return
27/06/25
1 Stopover (IST)
TK0188, TK1981
15h 25min
Turkish Airlines
£790
London Gatwick
Washington DC
Outbound
11/09/25
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
15/09/25
1 Stopover (KEF)
FI0644, FI0472
13h 05min
Icelandair
£572
London Gatwick
Washington DC
Outbound
11/09/25
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
15/09/25
1 Stopover (KEF)
FI0644, FI0472
13h 05min
Icelandair ?
£594
London Gatwick
Washington DC
Outbound
13/05/25
1 Stopover (KEF)
FI0471, FI0645
11h 20min
Return
09/06/25
1 Stopover (KEF)
FI0644, FI0472
13h 10min
Icelandair
£595
London Gatwick
Washington DC
Outbound
03/09/25
1 Stopover (LIS)
TP1335, TP0233
15h 15min
Return
15/09/25
1 Stopover (LIS)
TP0234, TP1336
12h 15min
TAP Air Portugal ?
£596
London Gatwick
Washington DC
Outbound
13/05/25
1 Stopover (KEF)
FI0471, FI0645
11h 20min
Return
09/06/25
1 Stopover (KEF)
FI0644, FI0472
13h 10min
Icelandair
£598
London Gatwick
Washington DC
Outbound
03/09/25
1 Stopover (KEF)
FI0473, FI0649
11h 30min
Return
15/09/25
1 Stopover (KEF)
FI0644, FI0472
13h 05min
Icelandair
£599
London Gatwick
Washington DC
Outbound
13/05/25
1 Stopover (KEF)
FI0471, FI0645
11h 20min
Return
03/06/25
1 Stopover (KEF)
FI0648, FI0470
31h 30min
Icelandair
£606
London Gatwick
Washington DC
Outbound
11/09/25
1 Stopover (LIS)
TP1335, TP0233
15h 15min
Return
15/09/25
1 Stopover (LIS)
TP0232, TP1336
16h 50min
TAP Air Portugal ?
£622
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from London Gatwick to Washington DC

Favourite airline: Icelandair
The favourite airline for flights from London Gatwick to Washington DC is Icelandair.
Icelandair
94 %
TAP Portugal
6 %
Favourite connection: via Reykjavik-Keflavik
The most popular flights on this route are via Reykjavik-Keflavik and are booked by 94 % of all travellers.
Route
bookings
1 stopover Reykjavik-Keflavik International
11h 15min, from £ 545
94 %
1 stopover Lisbon
13h 15min, from £ 774
6 %

Important flight information

Flight information: London Gatwick - Washington DC

Outbound and return from £ 559,83
Distance 5938 km
Departure airport Airport London Gatwick (LGW)
Arrival airport Airport Washington DC - Dulles International Airport, DC (IAD)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Washington DC
Popular destinations for onward travel
Flight destinations with a similar price