Flights from London to Washington DC

Our cheapest offers for flights from London to Washington DC

Here you can compare cheap flights from London (LON) to Washington DC (WAS) 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
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£403
Best option
London
Washington-DC
Outbound
16/04/25
direct
AF9651
08h 30min
Return
30/04/25
direct
AF9652
07h 35min
Air France ?
£615
found yesterday
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£412
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair ?
£419
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£425
London
Washington-DC
Outbound
01/03/25
1 Stopover (BOS)
B61621, B61055
11h 59min
Return
18/03/25
1 Stopover (BOS)
B62254, B61620
13h 15min
JetBlue Airways ?
£432
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£443
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair
£446
London
Washington-DC
Outbound
01/03/25
1 Stopover (KEF)
FI0471, FI0645
11h 30min
Return
18/03/25
1 Stopover (KEF)
FI0644, FI0470
10h 15min
Icelandair ?
£470
London
Washington-DC
Outbound
01/03/25
1 Stopover (BOS)
B61621, B62055
14h 35min
Return
18/03/25
1 Stopover (BOS)
B62664, B61620
09h 40min
JetBlue Airways ?
£474
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 to Washington DC

Favourite airline: Icelandair
Flight tickets on the route London – Washington-DC are most frequently booked with Icelandair.
Icelandair
28 %
Aer Lingus
25 %
TAP Portugal
21 %
Cheapest weekday: Sunday
The cheapest days to fly on this route are Sunday.
Stopover flights are the cheapest connection
On this route, direct flights are £183.00 more expensive than flights with a stopover.
non stop flight
1 stop
2 stops
08h 05min
15h 25min
31h 33min
£655
£472
£1,151
Favourite connection: via Reykjavik-Keflavik
Flights with a stopover in Reykjavik-Keflavik are the most popular connection for this route.
Route
bookings
1 stopover Reykjavik-Keflavik International
15h 25min, from £472
29 %
1 stopover Dublin
13h 55min, from £652
27 %
1 stopover Lisbon
12h 25min, from £540
23 %

Important flight information

Flight information: London - Washington-DC

Outbound and return from £402.89
Flight duration min. 08:20 / max. 08:45
Return flight duration min. 07:00/ max. 08:22
Distance 5903 km
Flights per week 52
Departure airport Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport Airport Washington-DC (WAS)
Destination country Flights to United States
Alternative routes to United States
Flight destinations with a similar price