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Cheap flights from Washington, D.C. to London Heathrow Airport from £153

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. to London Heathrow Airport departing on 6/1. 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. to London

Cheap return flights

These are some of the best return flight deals from Washington, D.C. to London that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Washington, D.C. to London.

Cheap last-minute flights

Planning a quick getaway from Washington, D.C. to London? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Washington, D.C. to London

Find recent round-trip train or bus tickets from Washington, D.C. to London.

All round-trip flight deals to London

The cheapest plane tickets to London found on KAYAK recently.
19:30 - 19:30BWI-LHR
19h 00m1 stop
12:15 - 18:30LHR-BWI
11h 15m1 stop
£364Icelandair
Find Deal
Wed, 8 Jan - Fri, 17 Jan
19:30 - 10:50BWI-LHR
10h 20m1 stop
12:15 - 18:30LHR-BWI
11h 15m1 stop
£365Icelandair
Find Deal
Sun, 12 Jan - Sun, 19 Jan
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 19:45LHR-BWI
8h 20mdirect
£452Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
21:55 - 10:05IAD-LHR
7h 10mdirect
16:30 - 20:45LHR-IAD
8h 15mdirect
£452Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
18:45 - 07:15IAD-LHR
7h 30mdirect
08:40 - 15:45LHR-IAD
12h 05m1 stop
£474Virgin Atlantic
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Mon, 9 Dec - Wed, 18 Dec
18:45 - 07:15IAD-LHR
7h 30mdirect
06:30 - 15:45LHR-IAD
14h 15m1 stop
£477Virgin Atlantic
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Mon, 9 Dec - Wed, 18 Dec
22:30 - 11:05IAD-LHR
7h 35mdirect
13:45 - 16:25LHR-IAD
31h 40m1 stop
£482United Airlines
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Wed, 4 Dec - Wed, 11 Dec
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 18:45LHR-BWI
8h 20mdirect
£485British Airways
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Wed, 19 Feb - Wed, 26 Feb
15:55 - 07:10IAD-LHR
10h 15m1 stop
08:30 - 15:50LHR-IAD
12h 20m1 stop
£486United Airlines
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Wed, 11 Dec - Tue, 14 Jan
17:26 - 09:15BWI-LHR
10h 49m1 stop
19:40 - 19:57LHR-BWI
29h 17m2 stops
£501British Airways
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Sun, 19 Jan - Mon, 27 Jan
19:30 - 19:30BWI-LHR
19h 00m1 stop
£153Icelandair
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Mon, 6 Jan
19:40 - 10:50IAD-LHR
10h 10m1 stop
£153Icelandair
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Mon, 24 Feb
18:45 - 07:15IAD-LHR
7h 30mdirect
£302Virgin Atlantic
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Mon, 9 Dec
18:45 - 07:15IAD-LHR
7h 30mdirect
£304Virgin Atlantic
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Mon, 27 Jan
20:30 - 08:40BWI-LHR
7h 10mdirect
£309Iberia
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Sun, 8 Dec
18:00 - 06:15IAD-LHR
7h 15mdirect
£309Iberia
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Sun, 8 Dec
20:30 - 08:40BWI-LHR
7h 10mdirect
£311British Airways
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Sun, 8 Dec
18:00 - 06:15IAD-LHR
7h 15mdirect
£311British Airways
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Sun, 29 Dec
22:15 - 10:50IAD-LHR
7h 35mdirect
£315United Airlines
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Mon, 20 Jan
11:05 - 07:10DCA-LHR
15h 05m2 stops
£318United Airlines
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Sun, 8 Dec
17:10 - 16:25IAD-LHR
18h 15m2 stops
06:40 - 15:40LHR-IAD
14h 00m1 stop
£533Scandinavian Airlines
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Sat, 23 Nov - Mon, 25 Nov
19:30 - 10:50BWI-LHR
10h 20m1 stop
20:40 - 18:30LHR-BWI
26h 50m1 stop
£543Icelandair
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Sun, 24 Nov - Sun, 8 Dec
18:00 - 06:15IAD-LHR
7h 15mdirect
16:30 - 19:45LHR-IAD
8h 15mdirect
£592Iberia
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Mon, 25 Nov - Wed, 4 Dec
18:30 - 06:40IAD-LHR
7h 10mdirect
20:15 - 20:05LHR-IAD
28h 50m1 stop
£609Lufthansa
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Tue, 26 Nov - Tue, 3 Dec
15:16 - 07:00DCA-LHR
10h 44m1 stop
20:40 - 19:59LHR-DCA
28h 19m2 stops
£621British Airways
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Tue, 26 Nov - Tue, 3 Dec
21:55 - 10:05IAD-LHR
7h 10mdirect
19:10 - 17:18LHR-IAD
27h 08m2 stops
£631British Airways
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Tue, 26 Nov - Tue, 3 Dec
21:55 - 10:05IAD-LHR
7h 10mdirect
16:30 - 19:45LHR-IAD
8h 15mdirect
£632Iberia
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Sun, 24 Nov - Sun, 8 Dec
14:05 - 06:20BWI-LHR
11h 15m1 stop
11:30 - 23:31LHR-BWI
17h 01m2 stops
£644Virgin Atlantic
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Tue, 26 Nov - Tue, 3 Dec
18:25 - 06:55IAD-LHR
7h 30mdirect
12:25 - 16:05LHR-IAD
8h 40mdirect
£719Virgin Atlantic
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Tue, 26 Nov - Tue, 3 Dec
17:50 - 09:45IAD-LHR
10h 55m1 stop
20:15 - 15:50LHR-IAD
24h 35m2 stops
£813Lufthansa
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Mon, 25 Nov - Mon, 2 Dec
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 19:45LHR-BWI
8h 20mdirect
£450Iberia
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Wed, 5 Mar - Wed, 12 Mar
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 19:45LHR-BWI
8h 20mdirect
£452Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
21:55 - 10:05IAD-LHR
7h 10mdirect
16:30 - 20:45LHR-IAD
8h 15mdirect
£452Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
18:45 - 07:15IAD-LHR
7h 30mdirect
12:25 - 16:05LHR-IAD
8h 40mdirect
£481Virgin Atlantic
Find Deal
Mon, 9 Dec - Wed, 25 Dec
18:45 - 07:15IAD-LHR
7h 30mdirect
12:25 - 16:05LHR-IAD
8h 40mdirect
£482Virgin Atlantic
Find Deal
Mon, 9 Dec - Wed, 18 Dec
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 18:45LHR-BWI
8h 20mdirect
£485British Airways
Find Deal
Wed, 19 Feb - Wed, 26 Feb
22:45 - 11:05IAD-LHR
7h 20mdirect
17:25 - 20:30LHR-IAD
8h 05mdirect
£487British Airways
Find Deal
Wed, 23 Apr - Wed, 7 May
22:30 - 11:05IAD-LHR
7h 35mdirect
12:05 - 15:40LHR-IAD
8h 35mdirect
£495United Airlines
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Wed, 4 Dec - Wed, 11 Dec
18:25 - 06:40IAD-LHR
7h 15mdirect
16:20 - 20:15LHR-IAD
8h 55mdirect
£532United Airlines
Find Deal
Sun, 8 Dec - Thu, 26 Dec
22:30 - 11:05IAD-LHR
7h 35mdirect
16:20 - 20:15LHR-IAD
8h 55mdirect
£556Lufthansa
Find Deal
Sun, 12 Jan - Mon, 27 Jan

Icelandair flights from Washington, D.C. to London Heathrow Airport

Our best Icelandair deals on Washington, D.C. to London Heathrow Airport flight tickets
Icelandair
8 Jan
BWI19:30Baltimore/Washington
19h 00m
1 stop
LHR19:30London Heathrow
17 Jan
LHR12:15London Heathrow
11h 15m
1 stop
BWI18:30Baltimore/Washington
Icelandair
12 Jan
BWI19:30Baltimore/Washington
10h 20m
1 stop
LHR10:50London Heathrow
19 Jan
LHR12:15London Heathrow
11h 15m
1 stop
BWI18:30Baltimore/Washington
Icelandair
16 Mar
BWI20:30Baltimore/Washington
10h 20m
1 stop
LHR10:50London Heathrow
22 Mar
LHR20:40London Heathrow
26h 50m
1 stop
BWI19:30Baltimore/Washington

TAP AIR PORTUGAL flights from Washington, D.C. to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Washington, D.C. to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
28 Jan
IAD17:30Washington, D.C. Dulles Intl
24h 10m
1 stop
LHR22:40London Heathrow
13 Feb
LHR06:00London Heathrow
14h 00m
1 stop
IAD15:00Washington, D.C. Dulles Intl
TAP AIR PORTUGAL
31 Jan
IAD22:30Washington, D.C. Dulles Intl
15h 25m
1 stop
LHR18:55London Heathrow
7 Feb
LHR19:55London Heathrow
24h 05m
1 stop
IAD15:00Washington, D.C. Dulles Intl
TAP AIR PORTUGAL
28 Jan
IAD17:30Washington, D.C. Dulles Intl
24h 10m
1 stop
LHR22:40London Heathrow
5 Feb
LHR06:00London Heathrow
20h 00m
1 stop
IAD21:00Washington, D.C. Dulles Intl

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. 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 from Washington, D.C. to London Heathrow Airport?

April. The cheapest time of year to fly to London Heathrow Airport from Washington, D.C. is April. The most expensive is June.

What is the cheapest day to depart Washington, D.C. for London Heathrow Airport?

Saturday. The cheapest day of the week is usually Saturday. The most expensive is usually Sunday.

When is the cheapest time to fly from Washington, D.C. to London Heathrow Airport?

In the morning. Washington, D.C. to London Heathrow Airport flights are approximately 9% more expensive in the evening than in the morning

How far in advance should you book Washington, D.C. to London Heathrow Airport flights?

21 days before. The cheapest time to buy a flight from Washington, D.C. to London Heathrow Airport is approximately 21 days to departure

What cabin class options are available on Washington, D.C. to London Heathrow Airport flights?

There are 2 cabin classes available to choose from on Washington, D.C. to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to London Heathrow Airport flights?

You could potentially save up to 48% on your flight if you consider stops on a Washington, D.C. to London Heathrow Airport flight.

How have Washington, D.C. to London Heathrow Airport flight prices changed over time?

As of November 2024, prices for Washington, D.C. to London Heathrow Airport flights are approximately 13% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to London Heathrow Airport (WAS to LHR) flight deals and tips

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

Best price found

£153

Fastest flight time

7h 10m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Washington, D.C. in the past 72 hours is £153. The best return flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is £364.
The fastest flight from Washington, D.C. to London Heathrow Airport takes 7h 10m
Direct flights go from Washington, D.C. to London Heathrow Airport every day.

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

    There are 3649.4 mi between Washington, D.C. and London Heathrow. By plane, this route typically takes 7h 10m.

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

    Prices for flights from Washington, D.C. to London Heathrow Airport are refreshed on a daily basis.

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

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

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

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to London Heathrow Airport?

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


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

Compare and see reviews for airlines that fly from Washington, D.C. to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £328Free CancellationRating
7.1
1,089 reviews
Search Aer Lingus flights
IcelandairPriceFrom £381Free CancellationRating
7.2
555 reviews
Search Icelandair flights
British AirwaysPriceFrom £451Free CancellationRating
6.6
6,837 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £460Free CancellationRating
7.5
663 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom £465Free CancellationRating
7.4
1,523 reviews
Search Air France flights
United AirlinesPriceFrom £467Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
IberiaPriceFrom £473Free CancellationRating
7.0
2,662 reviews
Search Iberia flights
KLMPriceFrom £490Free CancellationRating
7.8
1,350 reviews
Search KLM flights
American AirlinesPriceFrom £492Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LufthansaPriceFrom £496Free CancellationRating
6.8
7,148 reviews
Search Lufthansa flights
  • KLM Flights From Washington, D.C. to London Heathrow Airport

    The lowest priced KLM flight from Washington, D.C. to London Heathrow Airport from the last 72 hours was £621. Generally, KLM has 4 flights on this route every week with an average price of £755. KLM is rated 7.8/10 by our users.

  • Virgin Atlantic Flights From Washington, D.C. to London Heathrow Airport

    Across 663 Virgin Atlantic reviews on momondo, the average score is 7.5/10. Virgin Atlantic flies from Washington, D.C. to London Heathrow Airport about 4 times each week, with ticket deals ranging from £583 to £763. Price data is based on momondo searches in the last 72 hours.


Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to London for you.

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 for Washington, D.C. to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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 offers price alerts on flights to London from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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