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Cheap flights from Washington, D.C. to London from $206

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 2/3. 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 round-trip flights

These are some of the best round-trip 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 layovers.

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.
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
11:00 am - 6:00 pmSTN-BWI
11h 00m1 stop
$342PLAY
Find Deal
Wed, Mar 5 - Wed, Mar 12
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
11:00 am - 5:00 pmSTN-BWI
11h 00m1 stop
$361PLAY
Find Deal
Sun, Feb 2 - Sun, Feb 9
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 7:45 pmLHR-BWI
8h 20mnonstop
$591Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
4:30 pm - 8:45 pmLHR-IAD
8h 15mnonstop
$591Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
5:49 pm - 8:10 amDCA-LGW
9h 21m1 stop
3:05 pm - 11:24 pmLGW-DCA
13h 19m1 stop
$597British Airways
Find Deal
Sun, May 4 - Wed, May 14
9:20 pm - 9:35 amBWI-LHR
7h 15mnonstop
4:35 pm - 7:35 pmLHR-BWI
8h 00mnonstop
$625British Airways
Find Deal
Wed, Apr 23 - Wed, May 7
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
8:55 am - 4:25 pmLHR-IAD
12h 30m1 stop
$642United Airlines
Find Deal
Wed, Jan 15 - Tue, Jan 21
3:30 pm - 6:30 amIAD-LHR
10h 00m1 stop
8:45 am - 4:15 pmLHR-IAD
12h 30m1 stop
$644United Airlines
Find Deal
Wed, Apr 23 - Wed, Apr 30
5:26 pm - 9:15 amBWI-LHR
10h 49m1 stop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$664American Airlines
Find Deal
Wed, Jan 15 - Wed, Jan 22
5:20 pm - 7:50 amDCA-LHR
9h 30m1 stop
11:25 am - 5:57 pmLHR-DCA
11h 32m1 stop
$669American Airlines
Find Deal
Sun, Jan 12 - Tue, Jan 21
6:10 pm - 3:30 pmBWI-LGW
16h 20m1 stop
Mon, Feb 3
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
$218PLAY
Find Deal
Sat, Jan 25
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$378British Airways
Find Deal
Tue, Jan 14
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$393Iberia
Find Deal
Tue, Feb 25
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$398British Airways
Find Deal
Wed, Jan 8
6:00 am - 7:10 amDCA-LHR
20h 10m1 stop
$404United Airlines
Find Deal
Tue, Jan 7
3:55 pm - 7:10 amIAD-LHR
10h 15m1 stop
$404United Airlines
Find Deal
Wed, Feb 26
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$404American Airlines
Find Deal
Wed, Jan 29
5:49 pm - 8:10 amDCA-LGW
9h 21m1 stop
$408American Airlines
Find Deal
Mon, Apr 28
12:51 pm - 6:50 amDCA-LHR
12h 59m1 stop
$408Iberia
Find Deal
Mon, Jan 6
9:00 am - 5:55 amDCA-LHR
15h 55m1 stop
8:25 am - 4:00 pmLHR-DCA
12h 35m1 stop
$709JetBlue
Find Deal
Sat, Dec 28 - Tue, Jan 21
9:00 am - 5:55 amDCA-LHR
15h 55m1 stop
8:25 am - 5:00 pmLHR-DCA
13h 35m1 stop
$723JetBlue
Find Deal
Sat, Dec 28 - Sat, Jan 18
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
11:00 am - 5:00 pmSTN-BWI
11h 00m1 stop
$760PLAY
Find Deal
Wed, Dec 25 - Sat, Jan 18
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
11:00 am - 5:00 pmSTN-BWI
11h 00m1 stop
$770PLAY
Find Deal
Wed, Dec 25 - Wed, Jan 15
6:59 am - 8:35 pmDCA-LHR
32h 36m2 stops
3:00 pm - 3:25 pmLHR-DCA
29h 25m2 stops
$927United Airlines
Find Deal
Tue, Dec 24 - Wed, Jan 15
10:20 pm - 11:15 amIAD-LHR
31h 55m1 stop
8:55 am - 4:25 pmLHR-IAD
12h 30m1 stop
$933United Airlines
Find Deal
Tue, Dec 24 - Fri, Jan 10
1:53 pm - 12:00 pmIAD-LHR
17h 07m1 stop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$938British Airways
Find Deal
Tue, Dec 24 - Fri, Jan 17
1:53 pm - 12:00 pmIAD-LHR
17h 07m1 stop
11:50 am - 7:35 pmLHR-IAD
12h 45m1 stop
$948British Airways
Find Deal
Tue, Dec 24 - Fri, Jan 17
8:34 am - 7:30 amDCA-LGW
17h 56m2 stops
11:20 am - 9:30 pmLGW-DCA
15h 10m1 stop
$1,022American Airlines
Find Deal
Tue, Dec 24 - Fri, Jan 17
8:34 am - 7:30 amDCA-LGW
17h 56m2 stops
11:20 am - 7:28 amLGW-DCA
25h 08m2 stops
$1,025American Airlines
Find Deal
Tue, Dec 24 - Fri, Jan 17
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 7:45 pmLHR-BWI
8h 20mnonstop
$591Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
4:30 pm - 8:45 pmLHR-IAD
8h 15mnonstop
$591Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
10:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
12:10 pm - 4:35 pmLHR-IAD
8h 25mnonstop
$622British Airways
Find Deal
Tue, Mar 18 - Wed, Mar 26
9:20 pm - 9:35 amBWI-LHR
7h 15mnonstop
4:35 pm - 7:35 pmLHR-BWI
8h 00mnonstop
$625British Airways
Find Deal
Wed, Apr 23 - Wed, May 7
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
$660United Airlines
Find Deal
Wed, Jan 15 - Wed, Jan 29
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
12:45 pm - 4:15 pmLHR-IAD
8h 30mnonstop
$662Delta
Find Deal
Wed, Apr 30 - Thu, May 15
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
$663United Airlines
Find Deal
Sun, Jan 12 - Tue, Jan 21
6:10 pm - 6:45 amIAD-LHR
7h 35mnonstop
12:45 pm - 4:15 pmLHR-IAD
8h 30mnonstop
$712Delta
Find Deal
Tue, Apr 15 - Mon, Apr 21
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$714American Airlines
Find Deal
Wed, Feb 5 - Mon, Feb 17
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$764American Airlines
Find Deal
Thu, Feb 6 - Mon, Feb 17

Finnair flights from Washington, D.C. to London

Our best Finnair deals on Washington, D.C. to London flight tickets
Finnair
Mar 2
BWI8:30 pmBaltimore/Washington
7h 10m
LHR8:40 amLondon Heathrow
Mar 27
LHR3:25 pmLondon Heathrow
8h 20m
BWI7:45 pmBaltimore/Washington
Finnair
Mar 24
BWI9:30 pmBaltimore/Washington
7h 10m
LHR8:40 amLondon Heathrow
Apr 4
LHR4:35 pmLondon Heathrow
8h 00m
BWI7:35 pmBaltimore/Washington
Finnair
Jan 12
IAD9:55 pmWashington, D.C. Dulles Intl
7h 10m
LHR10:05 amLondon Heathrow
Jan 21
LHR4:30 pmLondon Heathrow
8h 15m
IAD7:45 pmWashington, D.C. Dulles Intl

Icelandair flights from Washington, D.C. to London

Our best Icelandair deals on Washington, D.C. to London flight tickets
Icelandair
Mar 5
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Mar 12
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD7:25 pmWashington, D.C. Dulles Intl
Icelandair
Feb 3
IAD7:40 pmWashington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Feb 18
LHR8:40 pmLondon Heathrow
26h 45m
1 stop
IAD6:25 pmWashington, D.C. Dulles Intl
Icelandair
Jan 19
IAD7:40 pmWashington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Jan 26
LGW11:55 amLondon Gatwick
11h 30m
1 stop
IAD6:25 pmWashington, 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 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 $641, 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 $645.

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

The cheapest day to depart from Washington, D.C. to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $708. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $770. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $700 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $885. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

Most flyers found that booking tickets 50 days in advance of their planned departure date is the best time to get cheap flights to London. During this timeframe, flight prices are around $789. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $658.

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 19% 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 round-trip 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

$206

Fastest flight time

7h 10m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in London

3 airports
The best one-way flight to London from Washington, D.C. in the past 72 hours is $206. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $342.
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 3 airports near London: London Heathrow (LHR), London Stansted (STN), London Gatwick (LGW)

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

    Washington, D.C. and London are 3662.3 mi apart from one another. A reasonable flight in good conditions will take 7h 10m.

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

    Prices for flights from Washington, D.C. to London were last updated today.

  • 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?

    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. 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
PLAYPriceFrom $281Free CancellationRating
7.1
91 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $370Free CancellationRating
7.3
1,309 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $398Free CancellationRating
7.1
1,880 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $459Free CancellationRating
7.1
1,074 reviews
Search Aer Lingus flights
IcelandairPriceFrom $476Free CancellationRating
7.1
506 reviews
Search Icelandair flights
IberiaPriceFrom $542Free CancellationRating
7.0
2,651 reviews
Search Iberia flights
KLMPriceFrom $546Free CancellationRating
7.8
1,345 reviews
Search KLM flights
DeltaPriceFrom $548Free CancellationRating
8.0
8,588 reviews
Search Delta flights
FinnairPriceFrom $551Free CancellationRating
7.7
1,285 reviews
Search Finnair flights
LufthansaPriceFrom $557Free CancellationRating
6.8
7,084 reviews
Search Lufthansa flights
  • Delta Flights From Washington, D.C. to London

    The lowest priced Delta flight from Washington, D.C. to London from the last 72 hours was $548. Generally, Delta has 6 flights on this route every week with an average price of $845. Delta is rated 8.0/10 by our users.

  • KLM Flights From Washington, D.C. to London

    KLM (7.8/10 from 1,345 reviews) operates around 6 flights from Washington, D.C. to London in any given week. The average KLM airfare for this route is around $771, with deals from around $546 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?

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?

momondo helps you find the best flight between Washington, D.C. and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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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