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	Baggage	Price
London Washington-DC	Outbound 11/12/25 1 Stopover (KEF) FI0471, FI0645 11h 25min	Return -	Icelandair		£487
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0471, FI0645 11h 25min	Return 30/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£357
Best option London Washington-DC	Outbound 08/12/25 direct BA0293 08h 30min	Return 24/12/25 direct BA0292 07h 15min	British Airways		£485
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0451, FI0645 11h 05min	Return 02/12/25 1 Stopover (KEF) FI0644, FI0450 10h 10min	Icelandair		£367
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0451, FI0645 11h 05min	Return 02/12/25 1 Stopover (KEF) FI0644, FI0450 10h 10min	Icelandair		£368
London Washington-DC	Outbound 25/11/25 1 Stopover (LIS) TP1363, TP0231 13h 35min	Return 02/12/25 1 Stopover (LIS) TP0232, TP1358 23h 05min	TAP Air Portugal	?	£369
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0471, FI0645 11h 25min	Return 30/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£371
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0471, FI0645 11h 25min	Return 02/12/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair	?	£373
London Washington-DC	Outbound 25/11/25 1 Stopover (KEF) FI0471, FI0645 11h 25min	Return 30/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£387
London Washington-DC	Outbound 25/11/25 1 Stopover (LIS) TP1363, TP0231 13h 35min	Return 30/11/25 1 Stopover (LIS) TP0234, TP1356 14h 00min	TAP Air Portugal		£387

Tips and tricks to help you find cheap flights from London to Washington DC

Important flight information

Flight information: London - Washington-DC

Cheapest outbound flight from	£486.97
Outbound and return from	£356.99
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 London - New York from £213
Flight London - Los Angeles from £231
Flight London - San Francisco from £355
Flight London - Miami from £303
Flight London - Orlando from £251
Flight London - Chicago from £298
Flight London - Las Vegas from £404
Flight London - Boston from £301
Flight London - Seattle-Tacoma from £411
Flight London - Santa Ana, CA from £413

Flights from London to Washington DC

Our cheapest offers for flights from London to Washington DC

London (LCY, LGW, LHR, LTN, STN, SEN)

Washington-DC

Tips and tricks to help you find cheap flights from London to Washington DC

Important flight information

Flight information: London - Washington-DC

Alternative routes to United States

Flight destinations with a similar price