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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-LHR)

Cheap return flights

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
KLM Logo
17:00 - 08:50DCA-LHR
10h 50m1 stop
KLM Logo
10:55 - 17:57LHR-DCA
12h 02m1 stop
£453KLM
Find Deal
Sun, 7 Sep - Tue, 16 Sep
Air Canada Logo
16:35 - 09:35DCA-LHR
12h 00m1 stop
Air Canada Logo
09:30 - 15:51LHR-DCA
11h 21m1 stop
£454Air Canada
Find Deal
Sun, 5 Oct - Tue, 14 Oct
Air France Logo
17:00 - 08:50DCA-LHR
10h 50m1 stop
Air France Logo
10:55 - 18:10LHR-DCA
12h 15m1 stop
£459Air France
Find Deal
Mon, 1 Sep - Tue, 9 Sep
Logo
12:55 - 09:35DCA-LHR
15h 40m2 stops
Logo
11:10 - 21:56LHR-DCA
15h 46m2 stops
£460
Find Deal
Mon, 13 Oct - Wed, 3 Dec
Logo
16:10 - 07:10DCA-LHR
10h 00m1 stop
Logo
06:50 - 15:31LHR-DCA
13h 41m2 stops
£463
Find Deal
Tue, 11 Nov - Wed, 19 Nov

British Airways flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport

Our best British Airways deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
British Airways
26 Oct
DCA19:06Washington, D.C. Reagan-National
9h 34m
1 stop
LHR08:40London Heathrow
5 Nov
LHR14:10London Heathrow
13h 31m
1 stop
DCA22:41Washington, D.C. Reagan-National
£477
Find similar
British Airways
1 Sept
DCA15:25Washington, D.C. Reagan-National
11h 15m
1 stop
LHR07:40London Heathrow
9 Sept
LHR17:00London Heathrow
11h 07m
1 stop
DCA23:07Washington, D.C. Reagan-National
£477
Find similar
British Airways
25 Nov
DCA06:10Washington, D.C. Reagan-National
11h 00m
1 stop
LHR22:10London Heathrow
5 Dec
LHR09:55London Heathrow
15h 40m
1 stop
DCA20:35Washington, D.C. Reagan-National
£484
Find similar

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

Our best Air Canada deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport 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

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport 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 Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

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 - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 7/9

17:00-08:50

1 stop10h 50m

London Heathrow

Tue 16/9

10:55-17:57

1 stop12h 02m

£453

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/10

16:35-09:35

1 stop12h 00m

London Heathrow

Tue 14/10

09:30-15:51

1 stop11h 21m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 1/9

17:00-08:50

1 stop10h 50m

London Heathrow

Tue 9/9

10:55-18:10

1 stop12h 15m

£459

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 13/10

12:55-09:35

2 stops15h 40m

London Heathrow

Wed 3/12

11:10-21:56

2 stops15h 46m

£460

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 11/11

16:10-07:10

1 stop10h 00m

London Heathrow

Wed 19/11

06:50-15:31

2 stops13h 41m

£463

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 Heathrow Airport

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 Heathrow Airport?

In general, October is the cheapest month to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £453. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Washington, D.C. Reagan-National Airport averaging around £477.

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

On average, the least expensive day to fly to London Heathrow Airport from Washington, D.C. Reagan-National Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £529. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £616.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to London Heathrow Airport in the evening for as low as £562. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £579 on average. Flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport 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 Heathrow Airport (DCA to LHR) 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 Heathrow Airport

Best price found

£216

Fastest flight time

9h 00m

Direct flights

None
The best one-way flight to London Heathrow Airport 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 Heathrow Airport found on momondo in the last 72 hours is £441.
The fastest flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport takes 9h 00m
There are no direct flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport. Popular non-direct route for this connection is Washington, D.C. Reagan-National Airport - London Heathrow Airport.
Search flight deals

  • How far is Washington, D.C. Reagan-National to London Heathrow by plane?

    There are 3651.9 mi between Washington, D.C. Reagan-National and London Heathrow. By plane, this route typically takes 9h 15m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to London Heathrow Airport.

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

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Northampton
Maidstone
Slough
Gatwick
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Swanage
Colchester
Worthing
Dartford
Hounslow
Poole

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Washington, D.C..

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

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Washington, D.C..

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

Yes. momondo can track prices for Washington, D.C. to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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