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Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £240

DCA — LHR
10 Dec — 17 Dec1
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

Tue 24/1116:05 -
1 stop10h 05m
Sun 29/1109:00 -
2 stops32h 19m
Deal found 5/11£521
Sun 8/1108:55 -
1 stop17h 00m
Thu 12/1109:20 -
1 stop11h 35m
Deal found 5/11£594
Mon 7/1211:20 -
1 stop14h 35m
Tue 15/1207:25 -
1 stop20h 27m
Deal found 9/11£601
Mon 9/1112:00 -
1 stop13h 55m
Tue 17/1109:20 -
1 stop14h 41m
Deal found 8/11£603
Thu 12/1106:15 -
1 stop10h 25m
Tue 24/1112:20 -
1 stop15h 33m
Deal found 5/11£603
Thu 3/1206:15 -
1 stop10h 25m
Fri 11/1209:20 -
1 stop11h 31m
Deal found 9/11£604
Mon 7/1213:00 -
1 stop12h 55m
Wed 9/1207:25 -
1 stop20h 27m
Deal found 6/11£605
Wed 2/1206:00 -
3 stops32h 30m
Mon 7/1220:35 -
2 stops31h 03m
Deal found 9/11£607
Thu 5/1113:09 -
1 stop12h 46m
Wed 11/1109:20 -
1 stop15h 49m
Deal found 5/11£609
Tue 1/1206:15 -
1 stop10h 25m
Sun 31/109:20 -
1 stop15h 37m
Deal found 5/11£610
Mon 9/1110:39 -
1 stop15h 16m
Sun 22/1109:20 -
1 stop11h 36m
Deal found 8/11£612

Find flight deals from Reagan-National to Heathrow

Round-trip from

£521

One-way from

£240

Popular in

June

Cheapest in

February

Average price

£720
Air Canada
  • Air Canada
  • 24/11-29/11
  • 3 total stops
  • 42h 24m total
  • Washington, D.C. to London
Search Deals
Air Canada
  • Air Canada
  • 10/4-31/12
  • 1 total stop
  • 19h 15m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£93 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 November 2026
Search Deals

Cheapflights Fare Finder

 
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.

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Route

Depart

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Price

Cheapest return flight

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 7/4

20:30-13:15

1 stop11h 45m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245
Fastest return journey

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sun 4/4

07:00-21:20

1 stop9h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 13/1

06:00-07:10

1 stop20h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£371

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 13/1

14:45-09:55

2 stops14h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£371

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sun 29/11

12:55-08:30

2 stops14h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£374

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 25/11

09:05-07:10

2 stops17h 05m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£374

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Mon 16/11

19:55-21:35

3 stops20h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£479

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sun 6/12

18:59-21:35

3 stops21h 36m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£479

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Tue 9/2

19:40-21:35

3 stops20h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£479

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 13/1

19:40-21:35

3 stops20h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£479

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 24 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

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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £489). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of £1,087). 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.

Related info for your journey

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

    For as low as £623, JetBlue can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 14h 55m. 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, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of £489). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of £1,087). 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
Luton
Milton Keynes
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Eastbourne
Northampton
Barnet
Brentford
Southend-on-Sea
Enfield
Southall
Harrow
Watford
Folkestone
Dagenham

Browse thousands of different options on Cheapflights for your next trip

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

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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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