Our cheapest offers for flights from Washington DC to United Kingdom

Here you can compare cheap flights from Washington DC (WAS) to United Kingdom 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 United Kingdom. Prices and availability may change at any time.

Flights from Washington-DC (WAS) to London (LON)

	Outbound	Return	Airlines	Price
Washington-DC London	Outbound 03/04/25 1 Stopover (KEF) FI0644, FI0454 18h 50min	Return 03/29/25 1 Stopover (KEF) FI0455, FI0645 26h 35min	Icelandair	$430
Best option Washington-DC London	Outbound 02/09/25 direct AY5416 07h 15min	Return 02/21/25 direct AY5417 08h 25min	Finnair	$568
Washington-DC London	Outbound 03/04/25 1 Stopover (KEF) FI0644, FI0454 18h 50min	Return 03/29/25 1 Stopover (KEF) FI0455, FI0645 26h 35min	Icelandair	$431