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
19/02/26
1 Stopover (KEF)
FI0471, FI0645
11h 35min
Return
22/02/26
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£341
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (IST)
TK1930, TK0007
17h 50min
Return
22/02/26
1 Stopover (IST)
TK0008, TK1929
20h 25min
Turkish Airlines
£703
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (KEF)
FI0471, FI0645
11h 35min
Return
22/02/26
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£345
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (KEF)
FI0471, FI0645
11h 35min
Return
22/02/26
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair ?
£349
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (KEF)
FI0471, FI0645
11h 35min
Return
22/02/26
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£368
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (ZRH)
LX0433, UA0053
25h 50min
Return
22/02/26
1 Stopover (ZRH)
LX3201, LX0432
19h 25min
Swiss International Air Lines, United Airlines
£391
London Gatwick
Washington DC
Outbound
20/03/26
1 Stopover (LIS)
TP1335, TP0233
15h 20min
Return
17/04/26
1 Stopover (LIS)
TP0232, TP1336
17h 35min
TAP Air Portugal ?
£415
London Gatwick
Washington DC
Outbound
19/02/26
1 Stopover (KEF)
FI0471, FI0645
11h 35min
Return
22/02/26
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair ?
£420
London Gatwick
Washington DC
Outbound
20/03/26
1 Stopover (LIS)
TP1335, TP0233
15h 20min
Return
17/04/26
1 Stopover (LIS)
TP0232, TP1334
11h 40min
TAP Air Portugal
£421
London Gatwick
Washington DC
Outbound
20/03/26
1 Stopover (LIS)
TP1335, TP0233
15h 20min
Return
17/04/26
1 Stopover (LIS)
TP0232, TP1336
17h 35min
TAP Air Portugal
£434
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 £340.99
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