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Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £269

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
28 Apr — 5 May1
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 29 March 2026.

Tue 12/516:20
DCA
-
LHR
1 stop12h 40m
Air Canada
Tue 19/509:30
LHR
-
DCA
1 stop11h 09m
Air Canada
Deal found 28/3£566
Mon 27/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Mon 4/511:55
LHR
-
DCA
1 stop16h 04m
JetBlue
Deal found 29/3£578
Sat 25/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Sat 2/508:15
LHR
-
DCA
1 stop19h 44m
JetBlue
Deal found 26/3£579
Sun 19/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Wed 22/411:55
LHR
-
DCA
1 stop16h 04m
JetBlue
Deal found 29/3£587
Mon 20/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Mon 4/508:15
LHR
-
DCA
1 stop19h 44m
JetBlue
Deal found 26/3£589
Tue 28/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Wed 13/508:15
LHR
-
DCA
1 stop19h 44m
JetBlue
Deal found 28/3£590
Mon 27/411:00
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Mon 4/519:50
LHR
-
DCA
2 stops31h 51m
Scandinavian Airlines
Deal found 29/3£592
Mon 20/411:00
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Fri 24/407:05
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 25/3£596
Sat 25/406:00
DCA
-
LHR
1 stop9h 45m
JetBlue
Wed 6/508:40
LHR
-
DCA
1 stop12h 07m
JetBlue
Deal found 24/3£597
Wed 6/513:20
DCA
-
LHR
1 stop12h 10m
JetBlue
Sat 9/508:15
LHR
-
DCA
1 stop19h 44m
JetBlue
Deal found 27/3£598
Mon 27/411:00
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Wed 6/507:05
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 27/3£600
Sun 26/406:00
DCA
-
LHR
1 stop22h 30m
JetBlue
Wed 6/508:40
LHR
-
DCA
1 stop12h 07m
JetBlue
Deal found 24/3£601

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 29 March 2026.

Round-trip from

£566

One-way from

£269

Popular in

February

Cheapest in

November

Average price

£572
Air Canada
  • Air Canada
  • 12/5-19/5
  • 2 total stops
  • 23h 49m total
  • Washington, D.C. to London
Search Deals
JetBlue
  • JetBlue
  • 14/5
  • 1 total stop
  • 9h 45m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 29 March 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

Wed 15/4

12:55-08:35

1 stop14h 40m

London Heathrow

Fri 15/5

09:30-15:39

1 stop11h 09m

£665

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 23/4

06:00-20:45

1 stop9h 45m

London Heathrow

Fri 8/5

11:55-22:59

1 stop16h 04m

£673

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 5/9

06:05-20:10

1 stop9h 05m

London Heathrow

Thu 10/9

06:30-17:23

2 stops15h 53m

£689
Fastest return journey

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 9/5

17:22-07:50

1 stop9h 28m

London Heathrow

Sat 16/5

10:30-16:45

1 stop11h 15m

£713

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 16/5

06:00-21:25

1 stop10h 25m

London Heathrow

Tue 19/5

09:30-15:24

2 stops34h 54m

£732

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 9/8

11:00-09:35

2 stops17h 35m

London Heathrow

Fri 21/8

07:05-23:12

2 stops21h 07m

£774

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 1/8

19:24-07:20

1 stop30h 56m

London Heathrow

Mon 17/8

20:35-23:17

2 stops31h 42m

£881

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 24/8

14:55-10:20

2 stops14h 25m

London Heathrow

Mon 31/8

11:20-07:58

3 stops25h 38m

£882

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 5/8

19:17-06:25

1 stop30h 08m

London Heathrow

Wed 19/8

20:10-23:17

2 stops32h 07m

£911

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 17/5

17:40-21:40

1 stop23h 00m

London Heathrow

Wed 20/5

20:10-23:13

2 stops32h 03m

£912

Flights are sorted by cheapest return flights first.

Deals found on 28/3

Showing 1-10 of 22 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?

Use this chart to determine the optimal time to book a return flight from Reagan-National to Heathrow. Price data was last updated on 13 March 2026.

The best time to book flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport is 44 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, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £23). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,048). 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 £689, United Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 9h 05m. 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, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £23). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,048). 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
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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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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