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

View AU$590 flight on Mon, 29 Sep. 2025Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 14 Sep. - Tue, 23 Sep.
DCA
Washington
LHR
London
AU$1,012 Return, found 5 days ago
AU$1,012
Return
found 5 days ago
Select United flight, departing Sun, 14 Sep. from Washington to London, returning Tue, 23 Sep., priced at AU$1,012 found 5 days ago
Air Canada
Sun, 14 Sep. - Tue, 23 Sep.
DCA
Washington
LHR
London
AU$1,021 Return, found 5 days ago
AU$1,021
Return
found 5 days ago
Select Air Canada flight, departing Sun, 14 Sep. from Washington to London, returning Tue, 23 Sep., priced at AU$1,021 found 5 days ago
Air Canada
Sun, 14 Sep. - Tue, 23 Sep.
DCA
Washington
LHR
London
AU$1,023 Return, found 5 days ago
AU$1,023
Return
found 5 days ago
Select Air Canada flight, departing Sun, 14 Sep. from Washington to London, returning Tue, 23 Sep., priced at AU$1,023 found 5 days ago
United
Thu, 16 Oct. - Thu, 23 Oct.
DCA
Washington
LHR
London
AU$1,051 Return, found 1 hour ago
AU$1,051
Return
found 1 hour ago
Select United flight, departing Thu, 16 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$1,051 found 1 hour ago
Air Canada
Sun, 12 Oct. - Sun, 19 Oct.
DCA
Washington
LHR
London
AU$1,058 Return, found 3 days ago
AU$1,058
Return
found 3 days ago
Select Air Canada flight, departing Sun, 12 Oct. from Washington to London, returning Sun, 19 Oct., priced at AU$1,058 found 3 days ago
Delta
Thu, 16 Oct. - Thu, 23 Oct.
DCA
Washington
LHR
London
AU$1,060 Return, found 1 hour ago
AU$1,060
Return
found 1 hour ago
Select Delta flight, departing Thu, 16 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$1,060 found 1 hour ago
United
Thu, 16 Oct. - Thu, 23 Oct.
DCA
Washington
LHR
London
AU$1,060 Return, found 1 hour ago
AU$1,060
Return
found 1 hour ago
Select United flight, departing Thu, 16 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$1,060 found 1 hour ago
United
Thu, 16 Oct. - Thu, 23 Oct.
DCA
Washington
LHR
London
AU$1,061 Return, found 1 hour ago
AU$1,061
Return
found 1 hour ago
Select United flight, departing Thu, 16 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$1,061 found 1 hour ago
Virgin Atlantic
Sun, 12 Oct. - Sun, 19 Oct.
DCA
Washington
LHR
London
AU$1,067 Return, found 3 days ago
AU$1,067
Return
found 3 days ago
Select Virgin Atlantic flight, departing Sun, 12 Oct. from Washington to London, returning Sun, 19 Oct., priced at AU$1,067 found 3 days ago
KLM
Thu, 16 Oct. - Thu, 23 Oct.
DCA
Washington
LHR
London
AU$1,139 Return, found 1 hour ago
AU$1,139
Return
found 1 hour ago
Select KLM flight, departing Thu, 16 Oct. from Washington to London, returning Thu, 23 Oct., priced at AU$1,139 found 1 hour ago

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

August is typically the cheapest month to fly

From AU$799 - AU$1,395 per traveller.

Graph displaying average flight prices per month

Flight from Washington to London route information
Origin airport
Ronald Reagan Washington National
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, KLM, United, Virgin Atlantic
Return price
AU$1,012
Distance
5847 km

Your quick guide to flights from Washington to London

Pick up great flights from Washington to London

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Washington to London. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Washington to London that take around hours.

Find cheap flights from Washington to London

From the great flight deals with prices currently ranging from AU$1,012 to AU$1,139, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to London around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to London is normally in September.

Reasons to book your flight from Washington to London with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Washington to London across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to London right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from DCA to LHR?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights from DCA to Heathrow Airport start from AU$1,012. Make your booking ASAP to secure the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Ronald Reagan Washington National Airport (DCA) to LHR?
When it comes to cancellation fees, each airline has its own terms and conditions. If you decide to cancel your escape, visit our Customer Service Portal.
How do I find cheap flights from Ronald Reagan Washington National Airport (DCA) to Heathrow Airport (LHR) 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 DCA to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Ronald Reagan Washington National Airport (DCA) to LHR?
With a flight distance of 5 900 kilometres from Ronald Reagan Washington National Airport (DCA) (DCA) to Heathrow Airport (LHR) (LHR), this is a long trip. Make sure you keep well hydrated and move your feet and legs every now and then.
Which airlines fly direct from National Airport to London Heathrow?
There are no direct flights, so you'll have to make at least one stop between DCA and London Heathrow. Take advantage of the layover time to stretch your legs and grab a bite to eat.
Are Ronald Reagan Washington National Airport (DCA) to Heathrow Airport (LHR) flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes find a bargain, with some of the cheapest fares from National Airport to London Heathrow popping up a few weeks prior to the departure date. If you'd rather book ahead, Expedia compares and updates the best flight deals regularly — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines publish prices so far in advance.

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