Flights from Washington DC to London Heathrow

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

Favorite airline: Aer Lingus
The most popular airline for flights from Washington DC to London Heathrow is Aer Lingus.
Aer Lingus
35 %
22 %
British Airways
16 %
Tip: book 5 weeks before departure
Our tip: book flights on this route 5 weeks before departure and save up to 54 %.
35 days before departure
Cheapest weekday: Thursday
The cheapest days to fly on this route are Thursday.
Direct flights are more expensive
On this route, direct flights are $145.00 more expensive than flights with a stopover.
non stop flight
1 stop
2 stops
07h 20min
18h 45min
21h 40min
Favourite connection: via Dublin
On this route, flights with a stopover in Dublin are the most popular.
1 stopover Dublin
11h 00min, from $442
38 %
1 stopover Reykjavik-Keflavik International
18h 45min, from $433
25 %
Direct flights
07h 20min, from $578
20 %

Flight information: Washington DC - London Heathrow

Roundtrip from $433.09
Flight duration min. 07:00 / max. 07:25
Return flight duration min. 08:20/ max. 08:45
Distance 5908 km
Flights per week 52
Departure airport Washington DC - Dulles International Airport, DC (IAD)
Arrival airport London Heathrow (LHR)
Destination country United Kingdom