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Cheap flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport from £249

DCA — LHR
24 Oct — 31 Oct1
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

Wed 30/916:20 -
1 stop12h 40m
Wed 7/1009:30 -
1 stop11h 10m
Deal found 23/9£531
Wed 30/909:40 -
1 stop19h 20m
Thu 8/1009:30 -
1 stop31h 39m
Deal found 20/9£534
Mon 28/918:55 -
1 stop9h 40m
Wed 7/1009:30 -
1 stop11h 10m
Deal found 20/9£534
Wed 11/1116:00 -
1 stop10h 10m
Thu 19/1111:10 -
1 stop12h 08m
Deal found 23/9£535
Tue 29/916:20 -
1 stop12h 40m
Tue 3/1113:00 -
1 stop26h 29m
Deal found 20/9£536
Wed 14/1016:55 -
1 stop10h 05m
Thu 10/1207:30 -
2 stops16h 49m
Deal found 20/9£537
Tue 20/1016:20 -
1 stop12h 40m
Tue 27/1013:00 -
1 stop12h 59m
Deal found 20/9£541
Wed 11/1116:00 -
1 stop10h 10m
Mon 16/1112:05 -
2 stops38h 54m
Deal found 22/9£541

Find flight deals from Reagan-National to Heathrow

Round-trip from

£534

One-way from

£249

Popular in

June

Cheapest in

November

Average price

£768
Air Canada
  • Air Canada
  • 5/10-13/10
  • 2 total stops
  • 30h 00m total
  • Washington, D.C. to London
Search Deals
JetBlue
  • JetBlue
  • 19/10-31/12
  • 1 total stop
  • 9h 52m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£120 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 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

Return

Price

Cheapest return flight

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sun 8/11

06:15-20:55

1 stop9h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249
Fastest return journey

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sat 3/10

06:30-20:45

1 stop9h 15m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Mon 28/12

12:30-09:55

2 stops16h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£276

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Fri 12/2

16:00-07:10

1 stop10h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£286

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 21/10

12:50-08:35

1 stop14h 45m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£347

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Sun 8/11

16:00-07:10

1 stop10h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£349

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Wed 11/11

12:55-11:20

2 stops17h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£353

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Fri 18/12

06:59-09:50

1 stop21h 51m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£384

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Thu 8/10

12:50-06:30

1 stop12h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£407

Washington, D.C.London

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

DCALHR

Washington, D.C. Reagan-National

Fri 25/12

16:05-11:20

2 stops14h 15m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£419

Flights are sorted by cheapest return flights first.

Deals found on 22/9

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

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 June is currently the most expensive (average of £1,101). 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 below average for this route at the moment.

Washington, D.C. Reagan-National Airport to London Heathrow Airport flights typically cost between £591 and £749 in October.
The cheapest return price found within the last 5 days was £534 on Air Canada (5 Oct–13 Oct).

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 £619, United Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 9h 02m. 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 June is currently the most expensive (average of £1,101). 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
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Northampton
Colchester
Eastbourne
Enfield
Brentford
Southend-on-Sea
Barnet
Southall
Watford
Stratford-upon-Avon
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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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.

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