Flights from Washington DC to London Heathrow

Our cheapest offers for flights from Washington DC to London Heathrow

Here you can compare cheap flights from Washington DC (DCA) to London Heathrow (LHR) 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 London Heathrow. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Washington DC
London Heathrow
Outbound
04/02/25
1 Stopover (BOS)
B62554, B61620
10h 10min
Return
04/09/25
1 Stopover (BOS)
B61621, B61055
11h 16min
JetBlue Airways ?
$480
Washington DC
London Heathrow
Outbound
04/21/25
1 Stopover (JFK)
B61888, AY4036
09h 40min
Return
05/19/25
1 Stopover (JFK)
AY5477, AY4119
14h 08min
JetBlue Airways, Finnair
$1,010
Washington DC
London Heathrow
Outbound
03/01/25
1 Stopover (BOS)
B61154, B61620
15h 26min
Return
03/09/25
1 Stopover (BOS)
B61621, B61355
12h 05min
JetBlue Airways ?
$508
Washington DC
London Heathrow
Outbound
04/21/25
1 Stopover (YOW)
AC8870, AC0888
12h 35min
Return
05/19/25
2 Stopovers (ZRH, YYZ)
LX0339, AC6836, AC8786
31h 23min
Air Canada
$581
Washington DC
London Heathrow
Outbound
04/21/25
1 Stopover (YOW)
AC8870, AC0888
12h 35min
Return
05/19/25
2 Stopovers (ZRH, YYZ)
LX0339, AC6836, AC8786
31h 23min
Air Canada
$582
Washington DC
London Heathrow
Outbound
04/21/25
1 Stopover (ORD)
UA1888, UA0920
11h 50min
Return
05/19/25
1 Stopover (EWR)
UA0883, UA4433
11h 36min
United Airlines ?
$644
Washington DC
London Heathrow
Outbound
03/29/25
1 Stopover (YYZ)
AC8789, AC0854
28h 55min
Return
04/19/25
1 Stopover (YOW)
AC0889, AC8869
28h 21min
Air Canada
$647
Washington DC
London Heathrow
Outbound
04/21/25
1 Stopover (ORD)
UA0289, UA0929
12h 20min
Return
05/19/25
1 Stopover (YUL)
UA8035, UA8366
16h 38min
United Airlines ?
$654
Washington DC
London Heathrow
Outbound
03/31/25
1 Stopover (YUL)
AC8824, AC0864
12h 50min
Return
04/19/25
2 Stopovers (MUC, YYZ)
AC2485, AC0837, AC8784
15h 38min
Air Canada
$657
Washington DC
London Heathrow
Outbound
05/04/25
1 Stopover (YUL)
AC8824, AC0864
12h 25min
Return
05/18/25
1 Stopover (YUL)
AC0865, AC8825
12h 03min
Air Canada ?
$692
Prices based on recent searches, subject to last-minute changes
Page 1 / 2

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

Favorite airline: United Airlines
The favorite airline for flights from Washington DC to London Heathrow is United Airlines.
United Airlines
31 %
Air Canada
23 %
Finnair
23 %
Cheapest weekday: Monday
The cheapest day of departure is Monday. You can save up to 49 % when you fly on these days of the week.
Favourite connection: via New York
Flights with a stopover in New York are the most popular connection for this route.
Route
bookings
1 stopover New York - John F. Kennedy International Airport, NY
10h 35min, from 608 $
40 %
1 stopover New York - Newark Liberty International Airport, NJ
09h 40min, from 546 $
30 %
1 stopover Toronto - Lester B. Pearson International Airport
32h 20min, from 637 $
20 %

Important flight information

Flight information: Washington DC - London Heathrow

Roundtrip from 479,92 $
Flight duration min. 08:22
Distance 5887 km
Flights per week 1
Departure airport Airport Washington DC - Ronald Reagan National Airport, VA (DCA)
Arrival airport Airport London Heathrow (LHR)
Destination country Flights to United Kingdom
Alternative flights to London Heathrow
Flight destinations with a similar price
Flight destinations with a similar price