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Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £237

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
30 Jul — 6 Aug1
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 30 June 2026.

Sun 23/816:20
DCA
-
LHR
3 stops24h 15m
Multiple Airlines
Sun 30/818:40
LHR
-
DCA
3 stops32h 08m
Multiple Airlines
Deal found 26/6£533
Sun 19/716:20
DCA
-
LHR
2 stops16h 35m
Multiple Airlines
Sun 26/722:00
LHR
-
DCA
2 stops25h 12m
Multiple Airlines
Deal found 29/6£543
Wed 2/911:00
DCA
-
LHR
2 stops24h 00m
Scandinavian Airlines
Tue 8/907:05
LHR
-
DCA
2 stops20h 54m
Scandinavian Airlines
Deal found 26/6£546
Fri 23/1012:40
DCA
-
LHR
2 stops52h 20m
Air Canada
Mon 26/1017:50
LHR
-
DCA
2 stops44h 39m
Air Canada
Deal found 28/6£547
Sun 22/1112:55
DCA
-
LHR
2 stops27h 05m
Air Canada
Tue 24/1111:05
LHR
-
DCA
2 stops52h 24m
Air Canada
Deal found 25/6£548
Mon 23/1112:55
DCA
-
LHR
1 stop12h 35m
Air Canada
Wed 25/1106:00
LHR
-
DCA
2 stops20h 59m
Air Canada
Deal found 25/6£552
Sun 1/1118:55
DCA
-
LHR
1 stop32h 35m
Air Canada
Wed 4/1106:50
LHR
-
DCA
2 stops13h 34m
Air Canada
Deal found 29/6£553
Sat 26/918:55
DCA
-
LHR
1 stop32h 40m
Air Canada
Tue 29/906:50
LHR
-
DCA
2 stops18h 09m
Air Canada
Deal found 26/6£557
Mon 24/809:40
DCA
-
LHR
3 stops30h 55m
Multiple Airlines
Fri 28/819:30
LHR
-
DCA
3 stops25h 08m
Multiple Airlines
Deal found 28/6£586
Mon 17/814:25
DCA
-
LHR
1 stop11h 05m
JetBlue
Wed 2/908:40
LHR
-
DCA
1 stop14h 21m
JetBlue
Deal found 27/6£590

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 30 June 2026.

Round-trip from

£533

One-way from

£237

Popular in

February

Cheapest in

November

Average price

£1,050
23/8-30/8
  • 23/8-30/8
  • 6 total stops
  • 56h 23m total
  • Washington, D.C. to London
Search Deals
Air Canada
  • Air Canada
  • 29/9
  • 1 total stop
  • 23h 00m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 30 June 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 17/8

11:00-16:00

2 stops24h 00m

London Heathrow

Tue 1/9

07:05-22:59

2 stops20h 54m

£645

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 26/8

18:35-10:40

1 stop11h 05m

London Heathrow

Wed 2/9

06:30-16:34

2 stops15h 04m

£651

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 2/9

11:00-09:35

2 stops17h 35m

London Heathrow

Wed 9/9

07:05-22:59

2 stops20h 54m

£661

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 8/9

14:00-06:30

1 stop11h 30m

London Heathrow

Fri 18/9

08:40-14:50

1 stop11h 10m

£673

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 1/9

06:02-20:10

1 stop9h 08m

London Heathrow

Thu 17/9

13:40-22:47

1 stop14h 07m

£673

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 23/9

06:30-20:45

1 stop9h 15m

London Heathrow

Fri 25/9

08:40-17:24

1 stop13h 44m

£674

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 13/8

11:00-06:30

1 stop14h 30m

London Heathrow

Thu 20/8

08:40-21:50

1 stop18h 10m

£685

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 21/10

12:40-08:35

1 stop14h 55m

London Heathrow

Sun 25/10

07:30-18:23

2 stops14h 53m

£695

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 7/8

06:10-20:45

1 stop9h 35m

London Heathrow

Thu 13/8

11:55-22:59

1 stop16h 04m

£696
Fastest return journey

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 26/9

06:30-20:45

1 stop9h 15m

London Heathrow

Fri 2/10

08:40-14:50

1 stop11h 10m

£697

Flights are sorted by cheapest return flights first.

Deals found on 29/6

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

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 £487). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,051). 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 £651, Scandinavian Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 11h 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, 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 £487). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in February is currently the most expensive (average of £1,051). 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
Wembley
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Swindon
Eastbourne
Poole
Southall
Aylesbury
Romford

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

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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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