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Cheap flights from Washington, D.C. Reagan-National Airport to London from $292

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 10/26. 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 round-trip flights

Lufthansa Logo
4:00 pm - 7:15 amDCA-LHR
10h 15m1 stop
Lufthansa Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$597Lufthansa
Find Deal
Wed, Oct 1 - Wed, Oct 8
Air Canada Logo
4:35 pm - 9:35 amDCA-LHR
12h 00m1 stop
Air Canada Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$598Air Canada
Find Deal
Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
1:00 pm - 7:15 amDCA-LHR
13h 15m1 stop
United Airlines Logo
2:05 pm - 9:51 pmLHR-DCA
12h 46m1 stop
$602United Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
United Airlines Logo
3:25 pm - 6:45 amDCA-LHR
10h 20m1 stop
United Airlines Logo
9:30 am - 3:51 pmLHR-DCA
11h 21m1 stop
$605United Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 9
Iberia Logo
5:31 pm - 7:50 amDCA-LHR
9h 19m1 stop
Iberia Logo
11:30 am - 11:07 pmLHR-DCA
16h 37m2 stops
$631Iberia
Find Deal
Tue, Sep 2 - Tue, Sep 16
JetBlue Logo
1:20 pm - 6:30 amDCA-LHR
12h 10m1 stop
JetBlue Logo
11:55 am - 7:21 pmLHR-DCA
12h 26m1 stop
$632JetBlue
Find Deal
Wed, Sep 24 - Thu, Oct 9
JetBlue Logo
3:45 pm - 6:30 amDCA-LHR
9h 45m1 stop
JetBlue Logo
8:25 am - 4:47 pmLHR-DCA
13h 22m1 stop
$642JetBlue
Find Deal
Tue, Sep 2 - Tue, Sep 16
British Airways Logo
2:35 pm - 6:50 amDCA-LHR
11h 15m1 stop
British Airways Logo
11:05 am - 6:27 pmLHR-DCA
12h 22m1 stop
$645British Airways
Find Deal
Tue, Oct 7 - Fri, Oct 17
British Airways Logo
6:45 am - 9:40 pmDCA-LHR
9h 55m1 stop
British Airways Logo
7:30 pm - 4:54 pmLHR-DCA
26h 24m2 stops
$646British Airways
Find Deal
Mon, Sep 22 - Mon, Sep 29
Iberia Logo
3:35 pm - 9:40 pmDCA-LHR
25h 05m1 stop
Iberia Logo
5:00 pm - 11:07 pmLHR-DCA
11h 07m1 stop
$652Iberia
Find Deal
Sat, Sep 13 - Fri, Sep 26

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

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
United Airlines
Oct 1
DCA1:00 pmWashington, D.C. Reagan-National
13h 15m
1 stop
LHR7:15 amLondon Heathrow
Oct 8
LHR2:05 pmLondon Heathrow
12h 46m
1 stop
DCA9:51 pmWashington, D.C. Reagan-National
$602
Find similar
United Airlines
Sep 1
DCA3:25 pmWashington, D.C. Reagan-National
10h 20m
1 stop
LHR6:45 amLondon Heathrow
Sep 9
LHR9:30 amLondon Heathrow
11h 21m
1 stop
DCA3:51 pmWashington, D.C. Reagan-National
$605
Find similar
United Airlines
Sep 1
DCA7:25 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR10:10 amLondon Heathrow
Sep 9
LHR2:05 pmLondon Heathrow
12h 46m
1 stop
DCA9:51 pmWashington, D.C. Reagan-National
$640
Find similar

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

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to London Heathrow Airport flight tickets
JetBlue
Sep 24
DCA1:20 pmWashington, D.C. Reagan-National
12h 10m
1 stop
LHR6:30 amLondon Heathrow
Oct 9
LHR11:55 amLondon Heathrow
12h 26m
1 stop
DCA7:21 pmWashington, D.C. Reagan-National
$632
Find similar
JetBlue
Sep 2
DCA3:45 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR6:30 amLondon Heathrow
Sep 16
LHR8:25 amLondon Heathrow
13h 22m
1 stop
DCA4:47 pmWashington, D.C. Reagan-National
$642
Find similar
JetBlue
Aug 26
DCA6:30 amWashington, D.C. Reagan-National
9h 15m
1 stop
LHR8:45 pmLondon Heathrow
Sep 3
LHR11:55 amLondon Heathrow
12h 25m
1 stop
DCA7:20 pmWashington, D.C. Reagan-National
$657
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated August 19, 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 10/1

4:00 pm-7:15 am

1 stop10h 15m

London Heathrow

Wed 10/8

9:30 am-3:51 pm

1 stop11h 21m

$597

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 10/1

4:35 pm-9:35 am

1 stop12h 00m

London Heathrow

Wed 10/8

9:30 am-3:51 pm

1 stop11h 21m

$598

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 10/1

1:00 pm-7:15 am

1 stop13h 15m

London Heathrow

Wed 10/8

2:05 pm-9:51 pm

1 stop12h 46m

$602

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 9/1

3:25 pm-6:45 am

1 stop10h 20m

London Heathrow

Tue 9/9

9:30 am-3:51 pm

1 stop11h 21m

$605

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 9/2

5:31 pm-7:50 am

1 stop9h 19m

London Heathrow

Tue 9/16

11:30 am-11:07 pm

2 stops16h 37m

$631

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 9/24

1:20 pm-6:30 am

1 stop12h 10m

London Heathrow

Thu 10/9

11:55 am-7:21 pm

1 stop12h 26m

$632

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 9/2

3:45 pm-6:30 am

1 stop9h 45m

London Heathrow

Tue 9/16

8:25 am-4:47 pm

1 stop13h 22m

$642

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 10/7

2:35 pm-6:50 am

1 stop11h 15m

London Heathrow

Fri 10/17

11:05 am-6:27 pm

1 stop12h 22m

$645

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 9/22

6:45 am-9:40 pm

1 stop9h 55m

London Heathrow

Mon 9/29

7:30 pm-4:54 pm

2 stops26h 24m

$646

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 9/13

3:35 pm-9:40 pm

1 stop25h 05m

London Heathrow

Fri 9/26

5:00 pm-11:07 pm

1 stop11h 07m

$652

Flights are sorted by cheapest round-trip 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?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Washington, D.C. Reagan-National Airport, with most prices found around $613. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from Washington, D.C. Reagan-National Airport to London Heathrow Airport during January average around $646.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $757. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $902.

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 morning. momondo users have found flights departing from Washington, D.C. Reagan-National Airport to London Heathrow Airport in the morning for as low as $761. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $824.

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 $774 when searching weeks out. 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 $587 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 round-trip 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

$292

Fastest flight time

9h 15m

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 $292. The best round-trip flight deal from Washington, D.C. Reagan-National Airport to London Heathrow Airport found on momondo in the last 72 hours is $597.
The fastest flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport takes 9h 15m
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?

    The straight-line distance from Washington, D.C. Reagan-National to London Heathrow is 3651.9 mi. 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 Heathrow Airport?

    Prices for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 required travel and health documents for your London Heathrow Airport 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 Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

Best airlines flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $31Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
DeltaPriceFrom $421Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Virgin AtlanticPriceFrom $497Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $497Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $529Free CancellationRating
6.7
7,283 reviews
Search British Airways flights
IberiaPriceFrom $542Free CancellationRating
7.0
2,885 reviews
Search Iberia flights
United AirlinesPriceFrom $599Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
Air CanadaPriceFrom $645Free CancellationRating
7.1
9,997 reviews
Search Air Canada flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Dover
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Salisbury
Brentwood
Ilford
Swindon
Colchester
Folkestone
Stratford-upon-Avon
Watford

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?

Yes. All flights to London from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to London from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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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