Flights from London Heathrow to Washington DC

Our cheapest offers for flights from London Heathrow to Washington DC

Here you can compare cheap flights from London Heathrow (LHR) 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.

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

Favorite airline: Aer Lingus
Flight tickets on the route London Heathrow – Washington DC are most frequently booked with Aer Lingus.
Aer Lingus
26 %
25 %
TAP Portugal
21 %
Tip: book directly before departure
A good time to book a cheap flight on this route is directly on the day of departure.
0 days before departure
Cheapest weekday: Thursday
The cheapest flights on this route are operated on Thursday.
Direct flights are more expensive
Flights with a stopover are on average $270.00 cheaper than direct flights.
non stop flight
1 stop
08h 05min
24h 35min
Favourite connection: via Dublin
Flights with a stopover in Dublin are the most popular connection for this route.
1 stopover Dublin
14h 20min, from $547
26 %
1 stopover Copenhagen
23h 55min, from $480
25 %
1 stopover Lisbon
24h 35min, from $425
21 %

Flight information: London Heathrow - Washington DC

Roundtrip from $424.61
Flight duration min. 08:20 / max. 08:45
Return flight duration min. 07:00/ max. 07:25
Distance 5908 km
Flights per week 52
Departure airport London Heathrow (LHR)
Departure country United Kingdom
Arrival airport Washington DC - Dulles International Airport, DC (IAD)
Destination country United States