₩543,200 Cheap Flights from Washington (DCA) to London (LHR)

View ₩543,200 flight on Mon, Jan 5, 2026Opens in a new window

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

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Cheap Flights from Washington to London (DCA-LHR)

Prices were available within the past 7 days and start at ₩543,200 for one-way flights and ₩899,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, Oct 26 - Tue, Nov 4
DCA
Washington
LHR
London
₩899,500 Roundtrip, found 6 days ago
₩899,500
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sun, Oct 26 from Washington to London, returning Tue, Nov 4, priced at ₩899,500 found 6 days ago
United
Sun, Oct 26 - Tue, Nov 4
DCA
Washington
LHR
London
₩899,500 Roundtrip, found 6 days ago
₩899,500
Roundtrip
found 6 days ago
Select United flight, departing Sun, Oct 26 from Washington to London, returning Tue, Nov 4, priced at ₩899,500 found 6 days ago
Air Canada
Tue, Oct 28 - Tue, Nov 4
DCA
Washington
LHR
London
₩904,700 Roundtrip, found 5 days ago
₩904,700
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Oct 28 from Washington to London, returning Tue, Nov 4, priced at ₩904,700 found 5 days ago
Air Canada
Sun, Oct 26 - Tue, Nov 4
DCA
Washington
LHR
London
₩908,800 Roundtrip, found 6 days ago
₩908,800
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sun, Oct 26 from Washington to London, returning Tue, Nov 4, priced at ₩908,800 found 6 days ago
Air Canada
Tue, Oct 28 - Tue, Nov 4
DCA
Washington
LHR
London
₩914,000 Roundtrip, found 5 days ago
₩914,000
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Oct 28 from Washington to London, returning Tue, Nov 4, priced at ₩914,000 found 5 days ago
Delta
Tue, Dec 9 - Mon, Dec 15
DCA
Washington
LHR
London
₩950,000 Roundtrip, found 22 hours ago
₩950,000
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Dec 9 from Washington to London, returning Mon, Dec 15, priced at ₩950,000 found 22 hours ago
United
Sun, Oct 26 - Tue, Nov 4
DCA
Washington
LHR
London
₩984,300 Roundtrip, found 6 days ago
₩984,300
Roundtrip
found 6 days ago
Select United flight, departing Sun, Oct 26 from Washington to London, returning Tue, Nov 4, priced at ₩984,300 found 6 days ago
Delta
Tue, Dec 9 - Mon, Dec 15
DCA
Washington
LHR
London
₩985,700 Roundtrip, found 22 hours ago
₩985,700
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Dec 9 from Washington to London, returning Mon, Dec 15, priced at ₩985,700 found 22 hours ago
United
Tue, Dec 9 - Mon, Dec 15
DCA
Washington
LHR
London
₩985,700 Roundtrip, found 22 hours ago
₩985,700
Roundtrip
found 22 hours ago
Select United flight, departing Tue, Dec 9 from Washington to London, returning Mon, Dec 15, priced at ₩985,700 found 22 hours ago
American Airlines
Fri, Nov 21 - Thu, Nov 27
DCA
Washington
LHR
London
₩1,636,300 Roundtrip, found 1 day ago
₩1,636,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Nov 21 from Washington to London, returning Thu, Nov 27, priced at ₩1,636,300 found 1 day ago

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

September is typically the cheapest month to fly

From ₩717,203 - ₩1,178,012 per traveler.

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 ₩899,500. 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 kilometers 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.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Heathrow
Airlines serving
Air Canada, American Airlines, Delta, United
Roundtrip price
₩899,500
Distance
5847 km

Book with confidence

Washington to London Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Washington to London will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring London.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with DCA to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Washington for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LHR with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Washington to London Flights

Explore a world of travel with Expedia

Washington nearby Airports

Washington

Washington Dulles Intl. to London
₩745,900

Baltimore

*Available to Expedia members.