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Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £314

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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
10 Jun — 17 Jun1
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 May 2026.

Mon 8/612:45
DCA
-
LHR
3 stops26h 35m
Multiple Airlines
Mon 15/621:25
LHR
-
DCA
2 stops30h 03m
Multiple Airlines
Deal found 11/5£602
Sat 12/912:00
DCA
-
LHR
2 stops16h 20m
Scandinavian Airlines
Mon 14/906:40
LHR
-
DCA
2 stops21h 32m
Scandinavian Airlines
Deal found 9/5£605
Mon 1/606:00
DCA
-
LHR
3 stops33h 20m
Multiple Airlines
Mon 15/621:25
LHR
-
DCA
2 stops30h 03m
Multiple Airlines
Deal found 9/5£608
Sun 7/606:00
DCA
-
LHR
3 stops33h 20m
Multiple Airlines
Wed 17/621:25
LHR
-
DCA
2 stops30h 06m
Multiple Airlines
Deal found 11/5£612
Mon 24/806:02
DCA
-
LHR
2 stops22h 33m
Scandinavian Airlines
Mon 31/807:05
LHR
-
DCA
2 stops21h 07m
Scandinavian Airlines
Deal found 7/5£619
Mon 17/811:00
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Fri 21/807:05
LHR
-
DCA
2 stops20h 54m
Scandinavian Airlines
Deal found 10/5£625
Sun 7/606:00
DCA
-
LHR
3 stops33h 20m
Multiple Airlines
Mon 15/621:25
LHR
-
DCA
2 stops30h 03m
Multiple Airlines
Deal found 10/5£628
Mon 2/1112:55
DCA
-
LHR
1 stop15h 25m
Air Canada
Tue 17/1106:50
LHR
-
DCA
2 stops13h 31m
Air Canada
Deal found 8/5£629
Sun 7/606:00
DCA
-
LHR
2 stops19h 35m
Multiple Airlines
Fri 12/606:00
LHR
-
DCA
2 stops21h 28m
Multiple Airlines
Deal found 11/5£631
Wed 14/1012:00
DCA
-
LHR
2 stops16h 20m
Scandinavian Airlines
Tue 20/1007:05
LHR
-
DCA
2 stops20h 59m
Scandinavian Airlines
Deal found 11/5£632
Wed 19/812:40
DCA
-
LHR
1 stop14h 55m
Air Canada
Fri 28/806:00
LHR
-
DCA
2 stops17h 12m
Air Canada
Deal found 8/5£632

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 May 2026.

Round-trip from

£605

One-way from

£311

Popular in

February

Cheapest in

November

Average price

£626
Scandinavian Airlines
  • Scandinavian Airlines
  • 12/9-14/9
  • 4 total stops
  • 37h 52m total
  • Washington, D.C. to London
Search Deals
JetBlue
  • JetBlue
  • 23/10
  • 1 total stop
  • 31h 55m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£80 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 May 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 - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 28/9

12:40-06:30

1 stop12h 50m

London Heathrow

Tue 6/10

14:05-21:50

1 stop12h 45m

£649

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 21/10

11:00-09:35

2 stops17h 35m

London Heathrow

Sun 25/10

19:30-23:04

2 stops31h 34m

£657

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 19/8

12:55-09:20

2 stops15h 25m

London Heathrow

Sun 23/8

19:50-22:59

2 stops32h 09m

£687
Fastest return journey

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 20/8

06:00-20:40

1 stop9h 40m

London Heathrow

Sun 23/8

09:30-15:38

1 stop11h 08m

£725

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 8/7

16:20-10:00

1 stop12h 40m

London Heathrow

Wed 29/7

09:30-15:38

1 stop11h 08m

£778

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 27/5

14:55-06:30

1 stop10h 35m

London Heathrow

Mon 1/6

08:40-15:43

1 stop12h 03m

£783

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 21/7

09:40-10:00

1 stop19h 20m

London Heathrow

Mon 27/7

12:40-15:23

2 stops31h 43m

£791

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 7/10

14:30-11:55

2 stops16h 25m

London Heathrow

Sat 17/10

13:05-22:59

2 stops14h 54m

£794

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 15/7

11:47-09:20

2 stops16h 33m

London Heathrow

Wed 22/7

06:40-22:59

2 stops21h 19m

£809

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 22/7

11:47-09:20

2 stops16h 33m

London Heathrow

Mon 27/7

10:20-22:59

2 stops17h 39m

£853

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 23 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

The best time to book flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £473). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,020). 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?

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 £749, Scandinavian Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 9h 25m. 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 £473). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,020). 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
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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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.

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