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Cheap flights from Washington, D.C. Reagan-National Airport to London from £239

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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LON
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Reagan-National to London

Enter your travel dates to find the best prices.

Cheapest flights from Reagan-National to London
Explore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 June 2026.

Tue 6/1020:30
DCA
-
LHR
1 stop10h 45m
British Airways
Tue 13/1015:00
LHR
-
DCA
1 stop12h 16m
British Airways
Deal found 20/6£637
Fri 2/1021:55
DCA
-
LHR
1 stop27h 35m
Multiple Airlines
Mon 5/1016:35
LHR
-
DCA
1 stop11h 22m
Multiple Airlines
Deal found 20/6£638
Thu 3/906:00
DCA
-
LHR
2 stops33h 20m
Multiple Airlines
Mon 7/921:25
LHR
-
DCA
2 stops25h 50m
Multiple Airlines
Deal found 19/6£639
Wed 12/818:25
DCA
-
LGW
1 stop10h 10m
JetBlue
Fri 21/812:20
LGW
-
DCA
1 stop12h 36m
JetBlue
Deal found 20/6£639
Sat 12/911:10
DCA
-
LHR
2 stops17h 25m
Scandinavian Airlines
Fri 18/907:05
LHR
-
DCA
2 stops20h 54m
Scandinavian Airlines
Deal found 19/6£640
Wed 22/712:40
DCA
-
STN
3 stops26h 40m
Multiple Airlines
Tue 4/819:20
STN
-
DCA
2 stops29h 37m
Multiple Airlines
Deal found 20/6£640
Sun 27/916:20
DCA
-
LHR
1 stop12h 40m
Air Canada
Tue 3/1106:50
LHR
-
DCA
2 stops13h 31m
Air Canada
Deal found 19/6£640
Wed 12/817:00
DCA
-
LGW
1 stop11h 35m
JetBlue
Wed 26/812:20
LGW
-
DCA
1 stop14h 30m
JetBlue
Deal found 19/6£640
Sat 29/817:47
DCA
-
LHR
1 stop31h 43m
Multiple Airlines
Mon 7/909:15
LHR
-
DCA
1 stop11h 43m
Multiple Airlines
Deal found 19/6£641
Fri 4/920:55
DCA
-
LHR
1 stop28h 35m
Multiple Airlines
Wed 9/913:45
LHR
-
DCA
1 stop12h 28m
Multiple Airlines
Deal found 18/6£642
Wed 14/1012:00
DCA
-
LHR
2 stops16h 20m
Scandinavian Airlines
Wed 21/1007:05
LHR
-
DCA
2 stops20h 59m
Scandinavian Airlines
Deal found 20/6£643
Wed 7/1020:40
DCA
-
LHR
1 stop10h 10m
Multiple Airlines
Sun 11/1014:10
LHR
-
DCA
1 stop13h 47m
Multiple Airlines
Deal found 19/6£643

Find flight deals from Reagan-National to London

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to London (LON). 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 21 June 2026.

Round-trip from

£637

One-way from

£239

Popular in

June

Cheapest in

September

Average price

£1,022
British Airways
  • British Airways
  • 6/10-13/10
  • 2 total stops
  • 23h 01m total
  • Washington, D.C. to London
Search Deals
JetBlue
  • JetBlue
  • 29/7
  • 1 total stop
  • 9h 24m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£98 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 June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Reagan-National to London 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 21 June 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London 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

Sat 12/9

11:10-09:35

2 stops17h 25m

London Heathrow

Thu 17/9

07:05-22:59

2 stops20h 54m

£638

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Sat 22/8

14:15-09:35

1 stop14h 20m

London Gatwick

Sat 5/9

12:20-21:50

1 stop14h 30m

£645

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 25/8

18:25-09:35

1 stop10h 10m

London Gatwick

Tue 1/9

12:20-21:50

1 stop14h 30m

£657

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Thu 27/8

17:00-09:35

1 stop11h 35m

London Gatwick

Tue 1/9

12:20-19:56

1 stop12h 36m

£657

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Thu 3/9

06:02-11:30

2 stops24h 28m

London Stansted

Mon 7/9

15:15-19:53

3 stops33h 38m

£661

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 23/9

12:40-08:35

1 stop14h 55m

London Heathrow

Wed 30/9

09:30-15:40

1 stop11h 10m

£664

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Thu 30/7

17:00-09:35

1 stop11h 35m

London Gatwick

Wed 12/8

12:20-19:56

1 stop12h 36m

£669

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 16/8

20:40-14:30

2 stops12h 50m

London Stansted

Mon 24/8

22:45-18:12

2 stops24h 27m

£671

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Tue 22/9

15:15-09:30

2 stops13h 15m

London City

Wed 30/9

08:25-19:50

2 stops16h 25m

£673

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Sat 18/7

17:47-09:35

1 stop10h 48m

London Gatwick

Wed 22/7

12:20-21:50

1 stop14h 30m

£674

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Reagan-National to London

Have a flexible travel schedule? Discover the best time to fly to London 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

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £23). Flying from Washington, D.C. Reagan-National Airport to London in June is currently the most expensive (average of £689). 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?

What’s the top stopover airport for flights from Washington, D.C. Reagan-National Airport to London?

Share of one-stop return flights from Washington, D.C. Reagan-National Airport to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

New York (JFK) – chosen by Cheapflights users on 50% of one-stop itineraries from Washington, D.C. Reagan-National Airport to London on Cheapflights.

What’s the cheapest stopover airport for flights from Washington, D.C. Reagan-National Airport to London?

Average return fare for one-stop flights from Washington, D.C. Reagan-National Airport to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Boston (BOS) is the most affordable one-stop option, with an average return flight price of £514.

What’s the fastest stopover option from Washington, D.C. Reagan-National Airport to London?

Shortest average travel time for one-stop one-way flights from Washington, D.C. Reagan-National Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Boston (BOS) have the shortest average one-way travel time for one-stop routes: 9h 45m.

Which airport typically offers the quickest stopover for flights from Washington, D.C. Reagan-National Airport to London?

Average stopover duration for one-stop one-way flights from Washington, D.C. Reagan-National Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Boston (BOS) offer the fastest connection on this route, with an average stopover time of 2h 16m.

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

The price you pay for your flight from Washington, D.C. Reagan-National Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to London. 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?

    Scandinavian Airlines, JetBlue, and United Airlines can get you from Washington, D.C. Reagan-National Airport to London in just under 14h 20m. Your travel time can differ by up to 3h 05m. The distance from Washington, D.C. Reagan-National Airport to London is about 3670 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to London?

    The most popular route from Washington, D.C. Reagan-National Airport to London is Washington, D.C. Reagan-National - London Heathrow. You may also consider Washington, D.C. Reagan-National - London Gatwick or Washington, D.C. Reagan-National - London Luton.

  • Can I find deals for flights from Reagan-National to London that include hotel bookings?

    Yes. In addition to deals on Reagan-National to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to London.

  • Can I find deals for business class flights from Reagan-National to London?

    Yes. Cheapflights offers flight deals from Reagan-National to London 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?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £23). Flying from Washington, D.C. Reagan-National Airport to London in June is currently the most expensive (average of £689). 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?

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Hounslow
Milton Keynes
Wembley
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Gatwick
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Slough
Ilford
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Guildford
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Ipswich
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Folkestone
Southall

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