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

View AU$691 flight on Sun, 25 Oct 2026Opens 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.

Air Canada
Tue, 11 Aug - Wed, 19 Aug
DCA
Washington
LHR
London
AU$1,243 Return, found 10 hours ago
AU$1,243
Return
found 10 hours ago
Select Air Canada flight, departing Tue, 11 Aug from Washington to London, returning Wed, 19 Aug, priced at AU$1,243 found 10 hours ago
Air Canada
Wed, 12 Aug - Wed, 19 Aug
DCA
Washington
LHR
London
AU$1,255 Return, found 10 hours ago
AU$1,255
Return
found 10 hours ago
Select Air Canada flight, departing Wed, 12 Aug from Washington to London, returning Wed, 19 Aug, priced at AU$1,255 found 10 hours ago
Air Canada
Wed, 12 Aug - Wed, 19 Aug
DCA
Washington
LHR
London
AU$1,260 Return, found 10 hours ago
AU$1,260
Return
found 10 hours ago
Select Air Canada flight, departing Wed, 12 Aug from Washington to London, returning Wed, 19 Aug, priced at AU$1,260 found 10 hours ago
Finnair
Wed, 12 Aug - Tue, 18 Aug
DCA
Washington
LHR
London
AU$1,294 Return, found 2 days ago
AU$1,294
Return
found 2 days ago
Select Finnair flight, departing Wed, 12 Aug from Washington to London, returning Tue, 18 Aug, priced at AU$1,294 found 2 days ago
Air Canada
Wed, 12 Aug - Tue, 18 Aug
DCA
Washington
LHR
London
AU$1,296 Return, found 2 days ago
AU$1,296
Return
found 2 days ago
Select Air Canada flight, departing Wed, 12 Aug from Washington to London, returning Tue, 18 Aug, priced at AU$1,296 found 2 days ago
Finnair
Tue, 11 Aug - Wed, 19 Aug
DCA
Washington
LHR
London
AU$1,297 Return, found 10 hours ago
AU$1,297
Return
found 10 hours ago
Select Finnair flight, departing Tue, 11 Aug from Washington to London, returning Wed, 19 Aug, priced at AU$1,297 found 10 hours ago
Air Canada
Wed, 12 Aug - Tue, 18 Aug
DCA
Washington
LHR
London
AU$1,303 Return, found 2 days ago
AU$1,303
Return
found 2 days ago
Select Air Canada flight, departing Wed, 12 Aug from Washington to London, returning Tue, 18 Aug, priced at AU$1,303 found 2 days ago
United
Thu, 13 Aug - Wed, 19 Aug
DCA
Washington
LHR
London
AU$1,308 Return, found 10 hours ago
AU$1,308
Return
found 10 hours ago
Select United flight, departing Thu, 13 Aug from Washington to London, returning Wed, 19 Aug, priced at AU$1,308 found 10 hours ago
Delta
Fri, 18 Sept - Sun, 27 Sept
DCA
Washington
LHR
London
AU$1,381 Return, found 1 day ago
AU$1,381
Return
found 1 day ago
Select Delta flight, departing Fri, 18 Sept from Washington to London, returning Sun, 27 Sept, priced at AU$1,381 found 1 day ago
Scandinavian Airlines
Wed, 12 Aug - Tue, 18 Aug
DCA
Washington
LHR
London
AU$1,418 Return, found 2 days ago
AU$1,418
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Wed, 12 Aug from Washington to London, returning Tue, 18 Aug, priced at AU$1,418 found 2 days ago

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

March is typically the cheapest month to fly

From AU$990 - AU$2,106 per traveller.

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$1,243. 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.

Frequently asked questions

How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
To find a cheap flight from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
There are approximately 152 connecting flights per day from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow). Some common connection points include Logan Intl. (BOS), John F. Kennedy Intl. (JFK), and Liberty Intl. (EWR).
What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
The earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) typically departs at approximately 6:00 AM local time, operated by American Airlines. This is a seasonal service active in January and December. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
If you're flying from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow), you'll typically find the most flights on a Monday, with around 73 flights available. This gives you plenty of options to choose from. Major airlines on this route include American Airlines, Delta Air Lines, and United Airlines. While Monday is the busiest, flight options are fairly consistent throughout the week, with only about 10% more flights compared to other days.
What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
The most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) are in the afternoon, from 3pm to 6pm. Around 42% of passengers reckon this time window's best. Heaps of major carriers, including American Airlines, British Airways and Delta Air Lines, offer flights during this window. These times work well because you can have a productive morning before your flight, and you'll arrive in London in the evening, giving you time to settle in.
How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
A flight from DCA to LHR with a layover takes around 11 hours 20 minutes, with the route covering approximately 3,655 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for DCA to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Ronald Reagan Washington National (DCA)?
From Ronald Reagan Washington National (DCA), you can fly into London Intl. (YXU), Heathrow (LHR) and Gatwick (LGW) in London. Some flights may connect through major hubs like Liberty Intl. (EWR), O'Hare Intl. (ORD), Detroit Metropolitan Wayne County (DTW) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) flight and hotel package?
Securing a Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow)?
If you booked your Washington, DC (DCA-Ronald Reagan Washington National) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Heathrow
Airlines serving
Air Canada, American Airlines, British Airways, Delta, Finnair, Scandinavian Airlines, United, Virgin Atlantic
Return price
AU$1,242
Distance
5847 km

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