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Cheap flights from Washington, D.C. Reagan-National Airport to London from £216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to London departing on 26/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Reagan-National Airport to London (DCA-LON)

Cheap return flights

JetBlue Logo
16:45 - 09:35DCA-LGW
11h 50m1 stop
JetBlue Logo
12:10 - 20:51LGW-DCA
13h 41m1 stop
£430JetBlue
Find Deal
Mon, 22 Sep - Wed, 8 Oct
Lufthansa Logo
16:00 - 07:15DCA-LHR
10h 15m1 stop
Lufthansa Logo
09:30 - 15:51LHR-DCA
11h 21m1 stop
£441Lufthansa
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Air Canada Logo
16:35 - 09:35DCA-LHR
12h 00m1 stop
Air Canada Logo
09:30 - 15:51LHR-DCA
11h 21m1 stop
£442Air Canada
Find Deal
Wed, 1 Oct - Wed, 8 Oct
United Airlines Logo
13:00 - 07:15DCA-LHR
13h 15m1 stop
United Airlines Logo
14:05 - 21:51LHR-DCA
12h 46m1 stop
£445United Airlines
Find Deal
Wed, 1 Oct - Wed, 8 Oct
United Airlines Logo
15:25 - 06:45DCA-LHR
10h 20m1 stop
United Airlines Logo
09:30 - 15:51LHR-DCA
11h 21m1 stop
£447United Airlines
Find Deal
Mon, 1 Sep - Tue, 9 Sep
Air Canada Logo
16:35 - 09:35DCA-LHR
12h 00m1 stop
Air Canada Logo
14:05 - 21:51LHR-DCA
12h 46m1 stop
£448Air Canada
Find Deal
Wed, 1 Oct - Wed, 8 Oct
American Airlines Logo
15:35 - 07:50DCA-LGW
11h 15m1 stop
American Airlines Logo
15:05 - 22:57LGW-DCA
12h 52m1 stop
£450American Airlines
Find Deal
Sun, 5 Oct - Tue, 14 Oct
American Airlines Logo
14:55 - 08:10DCA-LGW
12h 15m1 stop
American Airlines Logo
15:05 - 22:57LGW-DCA
12h 52m1 stop
£451American Airlines
Find Deal
Wed, 8 Oct - Wed, 15 Oct
British Airways Logo
13:39 - 08:10DCA-LGW
13h 31m1 stop
British Airways Logo
15:05 - 22:57LGW-DCA
12h 52m1 stop
£452British Airways
Find Deal
Wed, 1 Oct - Tue, 14 Oct
British Airways Logo
19:06 - 07:50DCA-LGW
31h 44m1 stop
British Airways Logo
15:05 - 22:57LGW-DCA
12h 52m1 stop
£456British Airways
Find Deal
Sat, 11 Oct - Wed, 22 Oct

Air Canada flights from Washington, D.C. Reagan-National Airport to London

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to London flight tickets
Air Canada
1 Oct
DCA16:35Washington, D.C. Reagan-National
12h 00m
1 stop
LHR09:35London Heathrow
8 Oct
LHR09:30London Heathrow
11h 21m
1 stop
DCA15:51Washington, D.C. Reagan-National
£442
Find similar
Air Canada
1 Oct
DCA16:35Washington, D.C. Reagan-National
12h 00m
1 stop
LHR09:35London Heathrow
8 Oct
LHR14:05London Heathrow
12h 46m
1 stop
DCA21:51Washington, D.C. Reagan-National
£448
Find similar
Air Canada
5 Oct
DCA16:35Washington, D.C. Reagan-National
12h 00m
1 stop
LHR09:35London Heathrow
14 Oct
LHR09:30London Heathrow
11h 21m
1 stop
DCA15:51Washington, D.C. Reagan-National
£454
Find similar

United Airlines flights from Washington, D.C. Reagan-National Airport to London

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to London flight tickets
United Airlines
1 Oct
DCA13:00Washington, D.C. Reagan-National
13h 15m
1 stop
LHR07:15London Heathrow
8 Oct
LHR14:05London Heathrow
12h 46m
1 stop
DCA21:51Washington, D.C. Reagan-National
£445
Find similar
United Airlines
1 Sept
DCA15:25Washington, D.C. Reagan-National
10h 20m
1 stop
LHR06:45London Heathrow
9 Sept
LHR09:30London Heathrow
11h 21m
1 stop
DCA15:51Washington, D.C. Reagan-National
£447
Find similar
United Airlines
10 Dec
DCA11:05Washington, D.C. Reagan-National
15h 05m
1 stop
LHR07:10London Heathrow
17 Dec
LHR09:10London Heathrow
12h 12m
1 stop
DCA16:22Washington, D.C. Reagan-National
£479
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Reagan-National Airport 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, momondo users made 279,928 searches. Data last updated 19 August 2025.
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

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 22/9

16:45-09:35

1 stop11h 50m

London Gatwick

Wed 8/10

12:10-20:51

1 stop13h 41m

£430

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 1/10

16:00-07:15

1 stop10h 15m

London Heathrow

Wed 8/10

09:30-15:51

1 stop11h 21m

£441

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 1/10

16:35-09:35

1 stop12h 00m

London Heathrow

Wed 8/10

09:30-15:51

1 stop11h 21m

£442

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 1/10

13:00-07:15

1 stop13h 15m

London Heathrow

Wed 8/10

14:05-21:51

1 stop12h 46m

£445

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 1/9

15:25-06:45

1 stop10h 20m

London Heathrow

Tue 9/9

09:30-15:51

1 stop11h 21m

£447

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 1/10

16:35-09:35

1 stop12h 00m

London Heathrow

Wed 8/10

14:05-21:51

1 stop12h 46m

£448

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Sun 5/10

15:35-07:50

1 stop11h 15m

London Gatwick

Tue 14/10

15:05-22:57

1 stop12h 52m

£450

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 8/10

14:55-08:10

1 stop12h 15m

London Gatwick

Wed 15/10

15:05-22:57

1 stop12h 52m

£451

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 1/10

13:39-08:10

1 stop13h 31m

London Gatwick

Tue 14/10

15:05-22:57

1 stop12h 52m

£452

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Sat 11/10

19:06-07:50

1 stop31h 44m

London Gatwick

Wed 22/10

15:05-22:57

1 stop12h 52m

£456

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London?

The cheapest month to fly to London from Washington, D.C. Reagan-National Airport is in February. Flight prices, which tend to average around £447, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Washington, D.C. Reagan-National Airport averaging around £482.

What is the cheapest day to depart on your flight to London?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £529. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Reagan-National Airport to London for around £616.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £562. Flights at midday are often more expensive, with an average ticket price of £1,414.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £572 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Washington, D.C. Reagan-National Airport for as low as £434 on momondo.

When to book flights from Washington, D.C. Reagan-National Airport to London

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. Reagan-National Airport to London (DCA to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to London

Best price found

£216

Fastest flight time

9h 00m

Direct flights

None

Airports in London

2 airports
The best one-way flight to London from Washington, D.C. Reagan-National Airport in the past 72 hours is £216. The best return flight deal from Washington, D.C. Reagan-National Airport to London found on momondo in the last 72 hours is £430.
The fastest flight from Washington, D.C. Reagan-National Airport to London takes 9h 00m
There are no direct flights from Washington, D.C. Reagan-National Airport to London. Popular non-direct routes for this connection are Washington, D.C. Reagan-National Airport - London Heathrow Airport and Washington, D.C. Reagan-National Airport - London Gatwick Airport.
There are 2 airports near London: London Heathrow (LHR), London Gatwick (LGW)
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  • How far is Washington, D.C. Reagan-National to London by plane?

    Washington, D.C. Reagan-National and London are 3664.8 mi apart from one another. A reasonable flight in good conditions will take 9h 15m.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to London?

    Prices for flights from Washington, D.C. Reagan-National Airport to London refresh daily.

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport to London?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Reagan-National Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Maidstone
Slough
Gatwick
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Dartford
Hounslow
Dover
Chelmsford
Hayes
Folkestone
Bedford

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

Finding the right flight to London from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to London.

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
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