Flight Routes from London to Washington DC

Trip type

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
24/09/26
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
27/09/26
1 Stopover (KEF)
FI0644, FI0472
13h 10min
Icelandair
£439
Best option
London
Washington-DC
Outbound
01/06/26
direct
AA6630
08h 25min
Return
22/06/26
direct
AA6967
07h 40min
American Airlines ?
£468
London
Washington-DC
Outbound
24/09/26
1 Stopover (IST)
TK1930, TK0187
33h 05min
Return
27/09/26
1 Stopover (IST)
TK0188, TK1981
15h 35min
Turkish Airlines
£728
London
Washington-DC
Outbound
24/09/26
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
27/09/26
1 Stopover (KEF)
FI0644, FI0472
13h 10min
Icelandair
£440
London
Washington-DC
Outbound
24/09/26
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
27/09/26
1 Stopover (KEF)
FI0648, FI0472
10h 20min
Icelandair
£443
London
Washington-DC
Outbound
24/09/26
1 Stopover (KEF)
FI0473, FI0645
32h 40min
Return
27/09/26
1 Stopover (KEF)
FI0648, FI0472
10h 20min
Icelandair
£447
London
Washington-DC
Outbound
26/10/26
1 Stopover (MAD)
IB0726, AA8729
25h 50min
Return
02/11/26
1 Stopover (CLT)
AA2149, AA0730
12h 22min
Iberia, American Airlines
£459
London
Washington-DC
Outbound
28/10/26
1 Stopover (ZRH)
LX0345, LX3200
13h 30min
Return
05/11/26
1 Stopover (ZRH)
LX0073, LX0332
11h 30min
Swiss International Air Lines ?
£460
London
Washington-DC
Outbound
26/10/26
1 Stopover (CPH)
SK0500, SK0925
15h 35min
Return
02/11/26
1 Stopover (CPH)
SK0926, SK1501
20h 10min
SAS Scandinavian Airlines
£460
London
Washington-DC
Outbound
26/10/26
1 Stopover (CPH)
SK0500, SK0925
15h 35min
Return
02/11/26
1 Stopover (CPH)
SK0926, SK1501
20h 10min
SAS Scandinavian Airlines
£461
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 £438.99
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