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Cheap flights from Washington, D.C. to London from £151

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 departing on 10/2. 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.
18:10 - 13:55BWI-LTN
14h 45m1 stop
07:45 - 17:00LTN-BWI
14h 15m1 stop
Mon, 10 Feb - Wed, 12 Feb
18:10 - 10:00BWI-STN
10h 50m1 stop
11:00 - 18:00STN-BWI
11h 00m1 stop
£309PLAY
Find Deal
Wed, 5 Mar - Wed, 12 Mar
19:40 - 19:30IAD-LHR
18h 50m1 stop
12:15 - 18:25LHR-IAD
11h 10m1 stop
£362Icelandair
Find Deal
Sun, 12 Jan - Tue, 21 Jan
19:30 - 10:50BWI-LHR
10h 20m1 stop
20:40 - 18:30LHR-BWI
26h 50m1 stop
£365Icelandair
Find Deal
Sun, 12 Jan - Tue, 21 Jan
20:10 - 07:55DCA-LHR
30h 45m1 stop
15:00 - 15:29LHR-DCA
29h 29m1 stop
£511United Airlines
Find Deal
Tue, 7 Jan - Wed, 15 Jan
16:10 - 07:10DCA-LHR
10h 00m1 stop
15:00 - 21:00LHR-DCA
11h 00m1 stop
£521United Airlines
Find Deal
Tue, 21 Jan - Tue, 28 Jan
17:35 - 16:35IAD-LCY
18h 00m1 stop
18:10 - 15:45LCY-IAD
26h 35m1 stop
£525Virgin Atlantic
Find Deal
Mon, 13 Jan - Thu, 30 Jan
19:54 - 12:00DCA-LHR
11h 06m1 stop
09:35 - 16:27LHR-DCA
11h 52m1 stop
£528British Airways
Find Deal
Wed, 5 Feb - Tue, 11 Feb
17:35 - 16:35IAD-LCY
18h 00m1 stop
08:40 - 15:45LCY-IAD
12h 05m1 stop
£532Virgin Atlantic
Find Deal
Mon, 13 Jan - Tue, 28 Jan
16:59 - 08:10DCA-LGW
10h 11m1 stop
15:05 - 23:24LGW-DCA
13h 19m1 stop
£538British Airways
Find Deal
Sun, 4 May - Sun, 11 May
19:30 - 19:30BWI-LHR
19h 00m1 stop
£151Icelandair
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Mon, 10 Feb
19:40 - 19:30IAD-LHR
18h 50m1 stop
£151Icelandair
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Mon, 10 Feb
19:10 - 10:00BWI-STN
10h 50m1 stop
£166PLAY
Find Deal
Mon, 17 Mar
18:10 - 10:00BWI-STN
10h 50m1 stop
£170PLAY
Find Deal
Sat, 25 Jan
19:25 - 06:55IAD-LHR
7h 30mdirect
£297Virgin Atlantic
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Tue, 25 Mar
21:30 - 08:40BWI-LHR
7h 10mdirect
£300British Airways
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Sun, 16 Mar
18:00 - 06:15IAD-LHR
7h 15mdirect
£300British Airways
Find Deal
Mon, 3 Feb
18:25 - 06:55IAD-LHR
7h 30mdirect
£307Virgin Atlantic
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Sun, 26 Jan
22:30 - 11:05IAD-LHR
7h 35mdirect
£319United Airlines
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Wed, 15 Jan
15:00 - 05:55DCA-LHR
9h 55m1 stop
£320United Airlines
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Mon, 6 Jan
11:00 - 05:55DCA-LHR
13h 55m1 stop
07:25 - 20:40LHR-DCA
18h 15m1 stop
£734JetBlue
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Sun, 22 Dec - Sat, 11 Jan
22:20 - 07:55IAD-LHR
28h 35m1 stop
15:00 - 15:13LHR-IAD
29h 13m1 stop
£734United Airlines
Find Deal
Mon, 23 Dec - Fri, 10 Jan
20:10 - 09:15IAD-LHR
32h 05m1 stop
16:30 - 19:45LHR-IAD
8h 15mdirect
£768British Airways
Find Deal
Mon, 23 Dec - Fri, 24 Jan
20:10 - 09:15IAD-LHR
32h 05m1 stop
16:30 - 19:45LHR-IAD
8h 15mdirect
£771British Airways
Find Deal
Mon, 23 Dec - Fri, 10 Jan
19:30 - 10:55BWI-LGW
10h 25m1 stop
11:55 - 18:30LGW-BWI
11h 35m1 stop
£896Icelandair
Find Deal
Sun, 22 Dec - Sat, 25 Jan
19:30 - 10:55BWI-LGW
10h 25m1 stop
11:55 - 18:30LGW-BWI
11h 35m1 stop
£924Icelandair
Find Deal
Sun, 22 Dec - Wed, 22 Jan
22:20 - 11:15IAD-LHR
31h 55m1 stop
12:05 - 16:25LHR-IAD
33h 20m1 stop
£985Lufthansa
Find Deal
Sat, 21 Dec - Mon, 20 Jan
22:20 - 11:15IAD-LHR
31h 55m1 stop
16:20 - 20:15LHR-IAD
8h 55mdirect
£999Lufthansa
Find Deal
Sun, 22 Dec - Wed, 22 Jan
16:31 - 12:40BWI-LHR
15h 09m2 stops
11:30 - 23:28LHR-BWI
16h 58m2 stops
£1,204Virgin Atlantic
Find Deal
Thu, 19 Dec - Thu, 26 Dec
16:31 - 12:40BWI-LHR
15h 09m2 stops
12:30 - 22:47LHR-BWI
15h 17m1 stop
£1,209Virgin Atlantic
Find Deal
Thu, 19 Dec - Thu, 26 Dec
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 19:45LHR-BWI
8h 20mdirect
£465Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
21:55 - 10:05IAD-LHR
7h 10mdirect
16:30 - 20:45LHR-IAD
8h 15mdirect
£465Iberia
Find Deal
Wed, 5 Mar - Wed, 12 Mar
22:40 - 11:05IAD-LHR
7h 25mdirect
17:00 - 20:10LHR-IAD
8h 10mdirect
£466Iberia
Find Deal
Wed, 23 Apr - Wed, 30 Apr
19:00 - 06:15IAD-LHR
7h 15mdirect
16:30 - 20:45LHR-IAD
8h 15mdirect
£495British Airways
Find Deal
Tue, 18 Mar - Wed, 26 Mar
22:55 - 10:05IAD-LHR
7h 10mdirect
12:45 - 15:50LHR-IAD
8h 05mdirect
£496British Airways
Find Deal
Tue, 25 Mar - Thu, 3 Apr
18:45 - 07:15IAD-LHR
7h 30mdirect
12:25 - 16:05LHR-IAD
8h 40mdirect
£505Virgin Atlantic
Find Deal
Mon, 13 Jan - Tue, 28 Jan
18:25 - 06:55IAD-LHR
7h 30mdirect
12:25 - 16:05LHR-IAD
8h 40mdirect
£506Virgin Atlantic
Find Deal
Sun, 12 Jan - Tue, 21 Jan
18:25 - 06:40IAD-LHR
7h 15mdirect
12:05 - 15:40LHR-IAD
8h 35mdirect
£521United Airlines
Find Deal
Wed, 15 Jan - Tue, 21 Jan
22:15 - 10:40IAD-LHR
7h 25mdirect
16:40 - 20:00LHR-IAD
8h 20mdirect
£591United Airlines
Find Deal
Mon, 19 May - Tue, 27 May
20:30 - 08:40BWI-LHR
7h 10mdirect
15:25 - 19:45LHR-BWI
8h 20mdirect
£781Aer Lingus
Find Deal
Fri, 28 Feb - Sun, 9 Mar

Icelandair flights from Washington, D.C. to London

Our best Icelandair deals on Washington, D.C. to London flight tickets
Icelandair
12 Jan
IAD19:40Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR19:30London Heathrow
21 Jan
LHR12:15London Heathrow
11h 10m
1 stop
IAD18:25Washington, D.C. Dulles Intl
Icelandair
12 Jan
BWI19:30Baltimore/Washington
10h 20m
1 stop
LHR10:50London Heathrow
21 Jan
LHR20:40London Heathrow
26h 50m
1 stop
BWI18:30Baltimore/Washington
Icelandair
31 Jan
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
7 Feb
LGW11:55London Gatwick
11h 30m
1 stop
IAD18:25Washington, D.C. Dulles Intl

KLM flights from Washington, D.C. to London

Our best KLM deals on Washington, D.C. to London flight tickets
KLM
12 Jan
IAD18:25Washington, D.C. Dulles Intl
7h 30m
LHR06:55London Heathrow
21 Jan
LHR08:40London Heathrow
12h 05m
1 stop
IAD15:45Washington, D.C. Dulles Intl
KLM
13 Jan
IAD17:35Washington, D.C. Dulles Intl
9h 35m
1 stop
LCY08:10London City
20 Jan
LCY10:00London City
10h 45m
1 stop
IAD15:45Washington, D.C. Dulles Intl
KLM
17 Jan
IAD17:35Washington, D.C. Dulles Intl
9h 35m
1 stop
LCY08:10London City
21 Jan
LCY10:00London City
10h 45m
1 stop
IAD15:45Washington, D.C. Dulles Intl

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. 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 typical price of a round-trip flight between Washington, D.C. and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Washington, D.C. is in January. Flight prices, which tend to average around £505, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Washington, D.C. averaging around £508.

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £559. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to London for around £686.

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 morning when flights can be purchased for as low as £592. Flights at midday are often more expensive, with an average ticket price of £1,509.

What is the cheapest Washington, D.C. to London flight route?

Fly from Washington, D.C. Dulles Intl to London Gatwick for the best Washington, D.C. - London flight prices

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

In general, most travellers find the cheapest time to book a flight to London is about 30 days prior to their departure date, when tickets on average are £620. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Washington, D.C. for as low as £438 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. to London 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 flights?

You could potentially save up to 45% on your flight if you consider stops on a Washington, D.C. to London flight.

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

As of December 2024, prices for Washington, D.C. to London flights are approximately 18% more expensive when compared to flights at the same time last year.

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

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

Cheap Washington, D.C. to London (WAS to LON) flight deals and tips

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

Best price found

£151

Fastest flight time

7h 10m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in London

5 airports
The best one-way flight to London from Washington, D.C. in the past 72 hours is £151. The best return flight deal from Washington, D.C. to London found on momondo in the last 72 hours is £308.
The fastest flight from Washington, D.C. to London takes 7h 10m
Direct flights go from Washington, D.C. to London on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Finnair, Iberia and American Airlines.
There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

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

    There are 3662.3 mi between Washington, D.C. and London. 7h 10m is a normal flight duration for this route.

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

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

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

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

    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.

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

    The travel and health documents you'll need for your trip to London 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. 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?

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


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

Compare and see reviews for airlines that fly from Washington, D.C. to London with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom £328Free CancellationRating
7.1
1,078 reviews
Search Aer Lingus flights
PLAYPriceFrom £332Free CancellationRating
7.1
91 reviews
Search PLAY flights
IcelandairPriceFrom £378Free CancellationRating
7.1
509 reviews
Search Icelandair flights
British AirwaysPriceFrom £450Free CancellationRating
6.6
6,817 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £460Free CancellationRating
7.5
668 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom £464Free CancellationRating
7.4
1,505 reviews
Search Air France flights
United AirlinesPriceFrom £467Free CancellationRating
7.4
9,055 reviews
Search United Airlines flights
IberiaPriceFrom £472Free CancellationRating
7.0
2,655 reviews
Search Iberia flights
KLMPriceFrom £490Free CancellationRating
7.8
1,349 reviews
Search KLM flights
LufthansaPriceFrom £507Free CancellationRating
6.8
7,087 reviews
Search Lufthansa flights
  • KLM Flights From Washington, D.C. to London

    KLM flight deals from Washington, D.C. to London start from £621 round-trip. Over the 1 KLM flight for this route in a normal week, average airfare is usually £727 round-trip - but some users have found much cheaper deals with momondo.

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

    Virgin Atlantic (7.5/10 from 668 reviews) operates around 1 flight from Washington, D.C. to London in any given week. The average Virgin Atlantic airfare for this route is around £767, with deals from around £583 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to London flight 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?

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?

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?

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?

If you are not ready to book a flight from Washington, D.C. to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.


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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