Our cheapest offers for flights from United Kingdom a Washington DC

Here you can compare cheap flights from United Kingdom to Washington DC (IAD) 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.

Flights from London Heathrow (LHR) to Washington DC (IAD)

	Outbound	Return	Airlines	Baggage	Price
Best option London Heathrow Washington DC	Outbound 12/12/24 1 Stopover (LIS) TP1363, TP0231 14h 00min	Return 01/05/25 1 Stopover (LIS) TP0234, TP1366 19h 10min	TAP Air Portugal		$594
London Heathrow Washington DC	Outbound 12/12/24 1 Stopover (LIS) TP1363, TP0231 14h 00min	Return 01/05/25 1 Stopover (LIS) TP0234, TP1366 19h 10min	TAP Air Portugal		$599
London Heathrow Washington DC	Outbound 12/12/24 1 Stopover (LIS) TP1363, TP0231 14h 00min	Return 01/05/25 1 Stopover (LIS) TP0234, TP1358 18h 05min	TAP Air Portugal	?	$603