Flights from London to Washington DC

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Our cheapest offers for flights from London to Washington DC

Here you can compare cheap flights from London (LON) 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.

Please use our search to find current cheap offers for the following route: from London (LON) to Washington DC (IAD)
You can also change your filters (Departure airport: London (LON), Destination airport: Washington DC (IAD)) or look for alternative cheap flights.

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

Tip: book 13 days before departure
The best time to find a cheap flight on this route is 13 days before travel. Save up to 38 %.
13 days before departure

Flight information: London - Washington DC

Flight duration min. 08:20 / max. 08:45
Return flight duration min. 07:00/ max. 07:25
Distance 5927 km
Flights per week 52
Departure airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport Washington DC - Dulles International Airport, DC (IAD)
Destination country United States
Alternative routes to United States
Alternative flights to Washington DC
Popular destinations for onward travel
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.