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
04/29/25
1 Stopover (BOS)
B61254, B61620
09h 45min
Return
05/08/25
1 Stopover (JFK)
B60020, B60955
16h 03min
JetBlue Airways ?
$548
Washington DC
London Heathrow
Outbound
06/07/25
2 Stopovers (JFK, OSL)
SK3372, SK0924, SK0803
17h 35min
Return
06/23/25
2 Stopovers (CPH, JFK)
SK0502, SK0915, SK3373
18h 13min
SAS Scandinavian Airlines
$1,032
Washington DC
London Heathrow
Outbound
04/29/25
2 Stopovers (YOW, YUL)
AC8870, AC8014, AC0866
12h 35min
Return
05/08/25
1 Stopover (YUL)
AC0867, AC8823
11h 19min
Air Canada ?
$567
Washington DC
London Heathrow
Outbound
09/19/25
1 Stopover (JFK)
B60254, B61107
09h 15min
Return
09/29/25
1 Stopover (JFK)
B62220, B61355
15h 29min
JetBlue Airways ?
$573
Washington DC
London Heathrow
Outbound
04/29/25
1 Stopover (JFK)
AY4298, AY4016
12h 00min
Return
05/08/25
1 Stopover (JFK)
AY5513, AY4119
11h 16min
Finnair
$575
Washington DC
London Heathrow
Outbound
04/29/25
1 Stopover (ORD)
UA1888, UA0920
11h 50min
Return
05/08/25
1 Stopover (YUL)
UA8035, UA8372
11h 19min
United Airlines
$600
Washington DC
London Heathrow
Outbound
09/19/25
1 Stopover (YUL)
AC8824, AC0864
12h 25min
Return
09/29/25
1 Stopover (YUL)
AC0867, AC8823
11h 21min
Air Canada ?
$652
Washington DC
London Heathrow
Outbound
09/19/25
1 Stopover (YUL)
UA8028, UA8068
23h 00min
Return
09/29/25
1 Stopover (YUL)
UA8035, UA8372
11h 21min
United Airlines ?
$664
Washington DC
London Heathrow
Outbound
06/18/25
1 Stopover (JFK)
VS3485, VS0048
14h 39min
Return
07/15/25
1 Stopover (JFK)
VS0137, VS3500
20h 35min
Virgin Atlantic Airways ?
$703
Washington DC
London Heathrow
Outbound
06/08/25
1 Stopover (YUL)
AC8822, AC0866
15h 50min
Return
06/12/25
2 Stopovers (BRU, YUL)
AC6330, AC0833, AC8823
13h 59min
Air Canada ?
$813
Prices based on recent searches, subject to last-minute changes
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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 USD
40 %
1 stopover New York - Newark Liberty International Airport, NJ
09h 40min, from 546 USD
30 %
1 stopover Toronto - Lester B. Pearson International Airport
32h 20min, from 637 USD
20 %

Important flight information

Flight information: Washington DC - London Heathrow

Roundtrip from 547,26 USD
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
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