Flights from Washington DC to London Heathrow with Finnair

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
09/25/25
1 Stopover (JFK)
AY4254, AY4016
10h 42min
Return
10/05/25
1 Stopover (JFK)
AY4017, AY4119
11h 07min
Finnair
$701
Washington DC
London Heathrow
Outbound
09/25/25
1 Stopover (JFK)
AY4254, AY4016
10h 42min
Return
10/05/25
1 Stopover (JFK)
AY4017, AY4119
11h 07min
Finnair ?
$706
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Washington DC - London Heathrow

Roundtrip from $700.91
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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