Cheap Flights from London (LHR) to Washington (DCA) from HK$7,599~

View HK$7,599 flight on Wed, 21 Jan 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA)

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Find Cheap Flights from London (LHR) to Washington (DCA)

Prices were available within the past 7 days and start at HK$7,599 for one-way flights and HK$5,181 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 18 Sep - Sat, 11 Oct
LHR
London
DCA
Washington
HK$5,181 Return, found 9 hours ago
HK$5,181
Return
found 9 hours ago
Select Air Canada flight, departing Thu, 18 Sep from London to Washington, returning Sat, 11 Oct, priced at HK$5,181 found 9 hours ago
Air Canada
Thu, 18 Sep - Sat, 11 Oct
LHR
London
DCA
Washington
HK$5,233 Return, found 9 hours ago
HK$5,233
Return
found 9 hours ago
Select Air Canada flight, departing Thu, 18 Sep from London to Washington, returning Sat, 11 Oct, priced at HK$5,233 found 9 hours ago
Air Canada
Thu, 18 Sep - Sat, 11 Oct
LHR
London
DCA
Washington
HK$5,285 Return, found 9 hours ago
HK$5,285
Return
found 9 hours ago
Select Air Canada flight, departing Thu, 18 Sep from London to Washington, returning Sat, 11 Oct, priced at HK$5,285 found 9 hours ago
American Airlines
Mon, 1 Sep - Thu, 11 Sep
LHR
London
DCA
Washington
HK$5,343 Return, found 6 days ago
HK$5,343
Return
found 6 days ago
Select American Airlines flight, departing Mon, 1 Sep from London to Washington, returning Thu, 11 Sep, priced at HK$5,343 found 6 days ago
American Airlines
Sat, 20 Sep - Sun, 21 Sep
LHR
London
DCA
Washington
HK$5,355 Return, found 4 days ago
HK$5,355
Return
found 4 days ago
Select American Airlines flight, departing Sat, 20 Sep from London to Washington, returning Sun, 21 Sep, priced at HK$5,355 found 4 days ago
British Airways
Mon, 1 Sep - Thu, 11 Sep
LHR
London
DCA
Washington
HK$5,399 Return, found 6 days ago
HK$5,399
Return
found 6 days ago
Select British Airways flight, departing Mon, 1 Sep from London to Washington, returning Thu, 11 Sep, priced at HK$5,399 found 6 days ago
Delta
Wed, 19 Nov - Wed, 26 Nov
LHR
London
DCA
Washington
HK$5,403 Return, found 2 hours ago
HK$5,403
Return
found 2 hours ago
Select Delta flight, departing Wed, 19 Nov from London to Washington, returning Wed, 26 Nov, priced at HK$5,403 found 2 hours ago
United
Thu, 18 Sep - Sat, 11 Oct
LHR
London
DCA
Washington
HK$5,405 Return, found 9 hours ago
HK$5,405
Return
found 9 hours ago
Select United flight, departing Thu, 18 Sep from London to Washington, returning Sat, 11 Oct, priced at HK$5,405 found 9 hours ago
American Airlines
Sun, 1 Mar - Sun, 8 Mar
LHR
London
DCA
Washington
HK$5,455 Return, found 9 hours ago
HK$5,455
Return
found 9 hours ago
Select American Airlines flight, departing Sun, 1 Mar from London to Washington, returning Sun, 8 Mar, priced at HK$5,455 found 9 hours ago
British Airways
Wed, 19 Nov - Wed, 26 Nov
LHR
London
DCA
Washington
HK$5,458 Return, found 2 hours ago
HK$5,458
Return
found 2 hours ago
Select British Airways flight, departing Wed, 19 Nov from London to Washington, returning Wed, 26 Nov, priced at HK$5,458 found 2 hours ago

Find the cheapest month to fly from London (LHR) to Washington (DCA)

January is typically the cheapest month to fly

From HK$3,721 - HK$8,368 per traveller.

Graph displaying average flight prices per month

London to Washington route information
Origin airport
Heathrow
Destination airport
Ronald Reagan Washington National
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Iberia, Scandinavian Airlines, United, Virgin Atlantic
Return price
HK$5,181
Distance
5847 km

Flights from London to Washington

Book cheap flights from London (LHR) to Washington (DCA) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from London (LHR) to Washington (DCA) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your London (LHR) to Washington (DCA) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Washington flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Washington and things to do in Washington for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Washington more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Washington is HK$7,599 now!

 

Frequently asked questions

How much is a flight from Heathrow Airport (LHR) to National Airport?
Round-trip journeys between London Heathrow and Ronald Reagan Washington National Airport (DCA) start from HK$5,181. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — book today so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to National Airport?
Most flights can be canceled online, but every air carrier has its own set of terms and conditions. If you do need to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Heathrow Airport (LHR) to Ronald Reagan Washington National Airport (DCA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport to DCA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from LHR to National Airport?
With a flight distance of 5,900 kilometers between Hounslow and Arlington, this is a long flight. Ensure that you keep well hydrated and go for a short walk down the aisle every so often.
Which airlines fly direct from Heathrow Airport to DCA?
Direct flights aren't available, so you'll have to make at least one stop between Heathrow Airport and DCA. Use the layover time to stretch your legs and grab a bite to eat.
Are Heathrow Airport to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from London Heathrow to DCA can be hit-or-miss. It is possible to score a bargain, but you could also miss out completely! If you'd prefer to start your travel planning ahead of time, Expedia compares flight deals up to a year in advance. Just remember that not all airlines release their prices that far in advance. Our advice? Check back often as updates are made regularly.

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