Find flights
When to book
FAQs

Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £212

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/12. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
10 Sep — 17 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Reagan-National to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Reagan-National to Heathrow
Explore the most affordable flight options available from Reagan-National to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 August 2026.

Fri 2/1006:00 -
3 stops33h 20m
Thu 8/1021:25 -
2 stops30h 09m
Deal found 10/8£584
Mon 21/906:30 -
1 stop9h 15m
Mon 28/917:25 -
1 stop10h 45m
Deal found 7/8£592
Mon 21/913:15 -
1 stop12h 15m
Tue 29/913:45 -
1 stop12h 28m
Deal found 10/8£594
Wed 23/906:30 -
1 stop9h 15m
Wed 30/911:30 -
2 stops16h 40m
Deal found 9/8£598
Mon 21/906:30 -
1 stop9h 15m
Wed 30/913:45 -
1 stop12h 28m
Deal found 7/8£599
Fri 9/1012:40 -
3 stops26h 40m
Mon 19/1021:25 -
2 stops30h 09m
Deal found 8/8£600
Wed 23/906:30 -
1 stop9h 15m
Tue 29/909:15 -
1 stop12h 38m
Deal found 10/8£601
Wed 30/911:00 -
1 stop14h 30m
Wed 7/1009:15 -
1 stop11h 55m
Deal found 10/8£605
Sun 1/1115:55 -
1 stop10h 00m
Sun 8/1110:35 -
1 stop11h 44m
Deal found 7/8£606
Mon 21/906:10 -
2 stops22h 25m
Wed 7/1010:20 -
2 stops17h 35m
Deal found 5/8£607

Find flight deals from Reagan-National to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 August 2026.

Round-trip from

£584

One-way from

£212

Popular in

June

Cheapest in

November

Average price

£699
2/10-8/10
  • 2/10-8/10
  • 5 total stops
  • 63h 29m total
  • Washington, D.C. to London
Search Deals
British Airways
  • British Airways
  • 16/12
  • 1 total stop
  • 14h 46m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Reagan-National to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 August 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Wed 16/9

11:10-16:00

2 stops23h 50m

London Heathrow

Tue 22/9

07:05-22:59

2 stops20h 54m

£640

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Tue 20/10

11:05-09:35

2 stops17h 30m

London Heathrow

Thu 3/12

19:30-22:48

2 stops32h 18m

£640

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sun 6/9

06:02-09:35

2 stops22h 33m

London Heathrow

Thu 10/9

07:05-22:59

2 stops20h 54m

£660

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Wed 23/9

15:05-06:45

1 stop10h 40m

London Heathrow

Tue 29/9

15:50-22:59

1 stop12h 09m

£663

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Thu 15/10

06:30-20:45

1 stop9h 15m

London Heathrow

Mon 2/11

09:20-18:51

1 stop14h 31m

£664
Fastest return journey

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sun 20/9

06:30-20:45

1 stop9h 15m

London Heathrow

Tue 22/9

08:40-15:59

1 stop12h 19m

£664

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Tue 6/10

11:00-06:30

1 stop14h 30m

London Heathrow

Sat 17/10

08:40-16:05

1 stop12h 25m

£664

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Fri 16/10

06:30-20:45

1 stop9h 15m

London Heathrow

Sat 17/10

08:40-21:00

1 stop17h 20m

£664

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sun 13/12

16:00-07:50

1 stop10h 50m

London Heathrow

Fri 18/12

15:50-22:48

1 stop11h 58m

£686

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Wed 16/12

13:20-06:20

1 stop12h 00m

London Heathrow

Wed 30/12

08:40-18:15

2 stops14h 35m

£686

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Reagan-National to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Reagan-National with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £477). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of £1,079). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

Airfare is typical for this route at the moment.

Washington, D.C. Reagan-National Airport to London Heathrow Airport flights typically cost between £584 and £852 in October.
The cheapest return price found within the last 5 days was £584 on Multiple Airlines (2 Oct–8 Oct).

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

    For as low as £664, Scandinavian Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 9h 15m. Washington, D.C. Reagan-National Airport and London Heathrow Airport are separated by a distance of 3652 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Reagan-National to Heathrow that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Heathrow.

  • Can I find deals for business class flights from Reagan-National to Heathrow?

    Yes. Cheapflights offers flight deals from Reagan-National to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £477). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of £1,079). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Ilford
Slough
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Southend-on-Sea
Swindon
Enfield
Kingston upon Thames
Southall
Poole

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Reagan-National to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Reagan-National to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Reagan-National to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Reagan-National by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Reagan-National to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Reagan-National to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Reagan-National to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Reagan-National to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.