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 20/10/25 1 Stopover (KEF) FI0473, FI0645 32h 40min	Return 11/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£461
Best option London Washington-DC	Outbound 17/06/25 direct AF9651 08h 25min	Return 01/07/25 direct AF9652 07h 30min	Air France	?	£615
London Washington-DC Pay attention to transfer at connecting flight	Outbound 22/06/25 1 Stopover (MCO) Z00783, F94812 27h 44min	Return 05/07/25 1 Stopover (MCO) F94811, Z00784 15h 28min	Norse Atlantic UK, Frontier Airlines		£591
London Washington-DC	Outbound 30/06/25 1 Stopover (IST) TK1982, TK0187 29h 50min	Return 18/07/25 1 Stopover (IST) TK0188, TK1981 15h 25min	Turkish Airlines		£763
London Washington-DC	Outbound 20/10/25 1 Stopover (KEF) FI0473, FI0645 32h 40min	Return 11/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£481
London Washington-DC	Outbound 20/10/25 1 Stopover (KEF) FI0473, FI0645 32h 40min	Return 11/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair		£483
London Washington-DC	Outbound 20/10/25 1 Stopover (KEF) FI0473, FI0645 32h 40min	Return 11/11/25 1 Stopover (KEF) FI0644, FI0470 10h 15min	Icelandair	?	£500
London Washington-DC	Outbound 09/10/25 1 Stopover (KEF) FI0451, FI0645 11h 15min	Return 14/10/25 1 Stopover (KEF) FI0644, FI0450 10h 25min	Icelandair	?	£531
London Washington-DC	Outbound 09/10/25 1 Stopover (LIS) TP1335, TP0233 15h 15min	Return 14/10/25 1 Stopover (LIS) TP0234, TP1336 12h 15min	TAP Air Portugal	?	£536
London Washington-DC	Outbound 09/10/25 1 Stopover (KEF) FI0473, FI0645 32h 40min	Return 14/10/25 1 Stopover (KEF) FI0644, FI0472 13h 10min	Icelandair	?	£540

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

Important flight information

Flight information: London - Washington-DC

Outbound and return from	460,28 £
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 334 £
Flight London - Los Angeles from 423 £
Flight London - San Francisco from 447 £
Flight London - Miami from 357 £
Flight London - Orlando from 352 £
Flight London - Chicago from 398 £
Flight London - Boston from 365 £
Flight London - Santa Ana, CA from 450 £
Flight London - Baltimore from 569 £
Flight London - Philadelphia from 502 £

Flight destinations with a similar price

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Flight London - Bangkok from 454 £
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Flight London - Los Angeles from 423 £
Flight London - San Francisco from 447 £
Flight London - Amritsar from 450 £
Flight London - Goa from 500 £
Flight London - Nairobi from 488 £