Favorite airline: Virgin Atlantic
The most popular airline for flights from Washington DC to London Heathrow is Virgin Atlantic.
Virgin Atlantic
26 %
American Airlines
18 %
Finnair
14 %
Tip: book 3 months before departure
The best time to find a cheap flight on this route is 3 months before travel. Save up to 51 %.
105 days before departure
Favourite connection: via New York
The most popular route is via New York and is booked by 40 % of all travelers.
Route
bookings
1 stopover New York - John F. Kennedy International Airport, NY
10h 25min, from $586
40 %
1 stopover Boston Logan International Airport, MA
10h 01min, from $585
26 %
2 stopovers Boston Logan International Airport, MA Reykjavik-Keflavik International
13h 46min, from $834
9 %