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Cheap flights from Washington, D.C. to London from $173

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 1/27. 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.
7:10 pm - 10:00 amIAD-STN
10h 50m1 stop
11:00 am - 6:00 pmSTN-IAD
11h 00m1 stop
$371PLAY
Find Deal
Mon, Mar 10 - Tue, Mar 18
7:10 pm - 10:00 amBWI-STN
10h 50m1 stop
11:00 am - 6:00 pmSTN-BWI
11h 00m1 stop
$371PLAY
Find Deal
Mon, Mar 10 - Tue, Mar 18
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 7:45 pmLHR-BWI
8h 20mnonstop
$572Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
8:30 am - 3:50 pmLHR-IAD
12h 20m1 stop
$611United Airlines
Find Deal
Wed, Dec 4 - Wed, Dec 11
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$615British Airways
Find Deal
Mon, Jan 13 - Wed, Jan 22
11:54 am - 7:30 amDCA-LGW
14h 36m1 stop
11:20 am - 9:30 pmLGW-DCA
15h 10m1 stop
$615American Airlines
Find Deal
Mon, Jan 13 - Wed, Jan 22
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
$615Iberia
Find Deal
Wed, Jan 15 - Wed, Jan 29
3:55 pm - 7:10 amIAD-LHR
10h 15m1 stop
8:30 am - 3:50 pmLHR-IAD
12h 20m1 stop
$616United Airlines
Find Deal
Wed, Dec 11 - Thu, Mar 6
9:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
4:30 pm - 7:30 pmLHR-BWI
8h 00mnonstop
$617British Airways
Find Deal
Wed, Mar 19 - Thu, Apr 3
9:17 am - 7:30 amBWI-LGW
17h 13m2 stops
11:20 am - 12:18 amLGW-BWI
17h 58m2 stops
$619American Airlines
Find Deal
Mon, Jan 13 - Wed, Jan 22
10:35 am - 10:00 amBWI-LGW
18h 25m1 stop
Mon, Jan 27
9:20 pm - 10:00 amBWI-LGW
31h 40m1 stop
Sun, Dec 8
7:10 pm - 10:00 amBWI-STN
10h 50m1 stop
$222PLAY
Find Deal
Tue, Mar 11
6:10 pm - 10:00 amBWI-STN
10h 50m1 stop
$227PLAY
Find Deal
Sun, Jan 12
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$392British Airways
Find Deal
Wed, Feb 5
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
$392British Airways
Find Deal
Wed, Mar 5
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
$399United Airlines
Find Deal
Sun, Jan 19
11:05 am - 7:10 amDCA-LHR
15h 05m2 stops
$403United Airlines
Find Deal
Sun, Dec 8
5:30 pm - 8:10 amDCA-LGW
9h 40m1 stop
$466American Airlines
Find Deal
Tue, May 13
10:10 am - 7:30 amDCA-LGW
16h 20m2 stops
$472American Airlines
Find Deal
Mon, Nov 25
7:40 pm - 10:55 amIAD-LGW
10h 15m1 stop
11:55 am - 6:25 pmLGW-IAD
11h 30m1 stop
$574Icelandair
Find Deal
Mon, Nov 25 - Thu, Dec 12
7:30 pm - 10:55 amBWI-LGW
10h 25m1 stop
11:55 am - 6:30 pmLGW-BWI
11h 35m1 stop
$585Icelandair
Find Deal
Mon, Nov 25 - Wed, Dec 11
6:10 pm - 10:00 amIAD-STN
10h 50m1 stop
11:00 am - 5:00 pmSTN-IAD
11h 00m1 stop
$633PLAY
Find Deal
Sun, Nov 24 - Thu, Nov 28
6:10 pm - 10:00 amIAD-STN
10h 50m1 stop
11:00 am - 5:00 pmSTN-IAD
11h 00m1 stop
$652PLAY
Find Deal
Sun, Nov 24 - Tue, Nov 26
8:13 pm - 12:00 pmBWI-LHR
10h 47m1 stop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$752British Airways
Find Deal
Sun, Nov 24 - Thu, Dec 5
8:13 pm - 12:00 pmBWI-LHR
10h 47m1 stop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$755American Airlines
Find Deal
Sun, Nov 24 - Wed, Dec 4
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$779British Airways
Find Deal
Mon, Nov 25 - Thu, Dec 12
11:36 am - 9:00 amDCA-LGW
16h 24m2 stops
11:20 am - 11:00 pmLGW-DCA
16h 40m1 stop
$812American Airlines
Find Deal
Sun, Nov 24 - Sun, Dec 8
6:30 pm - 6:40 amIAD-LHR
7h 10mnonstop
12:05 pm - 3:30 pmLHR-IAD
32h 25m1 stop
$881United Airlines
Find Deal
Sun, Nov 24 - Tue, Dec 3
10:05 pm - 7:10 amIAD-LHR
28h 05m2 stops
1:45 pm - 3:30 pmLHR-IAD
30h 45m1 stop
$885United Airlines
Find Deal
Sat, Nov 23 - Tue, Dec 3
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 7:45 pmLHR-BWI
8h 20mnonstop
$572Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
4:30 pm - 8:45 pmLHR-IAD
8h 15mnonstop
$572Iberia
Find Deal
Wed, Mar 5 - Wed, Mar 12
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$577British Airways
Find Deal
Thu, Jan 9 - Thu, Jan 16
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
$611British Airways
Find Deal
Mon, Dec 30 - Thu, Jan 30
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$627Delta
Find Deal
Wed, Dec 4 - Tue, Dec 10
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
$628United Airlines
Find Deal
Wed, Dec 4 - Tue, Dec 24
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$640Delta
Find Deal
Tue, Jan 7 - Tue, Jan 14
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
$674United Airlines
Find Deal
Sun, Dec 8 - Thu, Dec 26
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$678American Airlines
Find Deal
Wed, Dec 4 - Mon, Dec 9
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$691American Airlines
Find Deal
Fri, Jan 24 - Fri, Jan 31

Scandinavian Airlines flights from Washington, D.C. to London

Our best Scandinavian Airlines deals on Washington, D.C. to London flight tickets
Scandinavian Airlines
Mar 14
IAD6:10 pmWashington, D.C. Dulles Intl
20h 20m
2 stops
LHR6:30 pmLondon Heathrow
Mar 16
LHR5:00 pmLondon Heathrow
27h 40m
1 stop
IAD4:40 pmWashington, D.C. Dulles Intl
Scandinavian Airlines
Mar 1
IAD5:10 pmWashington, D.C. Dulles Intl
17h 50m
1 stop
LHR4:00 pmLondon Heathrow
Mar 2
LHR6:40 pmLondon Heathrow
26h 00m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
Scandinavian Airlines
Mar 1
IAD5:10 pmWashington, D.C. Dulles Intl
16h 25m
2 stops
LHR2:35 pmLondon Heathrow
Mar 2
LHR7:30 pmLondon Heathrow
25h 10m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl

JetBlue flights from Washington, D.C. to London

Our best JetBlue deals on Washington, D.C. to London flight tickets
JetBlue
Jan 20
DCA7:59 amWashington, D.C. Reagan-National
16h 56m
1 stop
LHR5:55 amLondon Heathrow
Feb 2
LHR8:25 amLondon Heathrow
13h 35m
1 stop
DCA5:00 pmWashington, D.C. Reagan-National
JetBlue
Jan 15
DCA1:00 pmWashington, D.C. Reagan-National
11h 55m
1 stop
LHR5:55 amLondon Heathrow
Jan 23
LHR8:25 amLondon Heathrow
14h 36m
1 stop
DCA6:01 pmWashington, D.C. Reagan-National
JetBlue
Mar 19
DCA4:15 pmWashington, D.C. Reagan-National
9h 40m
1 stop
LHR5:55 amLondon Heathrow
Apr 3
LHR8:25 amLondon Heathrow
16h 37m
1 stop
DCA8:02 pmWashington, D.C. Reagan-National

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 from Washington, D.C. to London?

January. The cheapest time of year to fly to London from Washington, D.C. is January. Most expensive is June

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

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Saturday

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

In the afternoon. Washington, D.C. to London flights are approximately 18% more expensive at noon than in the afternoon

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

Baltimore/Washington - London Luton. Fly from Baltimore/Washington to London Luton for the best Washington, D.C. - London flight prices

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

23 days before. The cheapest time to buy a flight from Washington, D.C. to London is approximately 23 days to departure

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 52% 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 November 2024, prices for Washington, D.C. to London flights are approximately 2% cheaper when compared to flights at the same time last year.

What is the typical price of a round-trip flight between Washington, D.C. and London?


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

$173

Fastest flight time

7h 10m

Direct flights

Every day

Airports in London

4 airports
The best one-way flight to London from Washington, D.C. in the past 72 hours is $173. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $371.
The fastest flight from Washington, D.C. to London takes 7h 10m
Direct flights go from Washington, D.C. to London every day.
There are 4 airports near London: London Heathrow (LHR), London Luton (LTN), 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
88 reviews
Search PLAY flights
Scandinavian AirlinesPriceFrom $432Free CancellationRating
7.3
1,301 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $440Free CancellationRating
8.0
8,756 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $470Free CancellationRating
7.1
1,892 reviews
Search TAP AIR PORTUGAL flights
Aer LingusPriceFrom $479Free CancellationRating
7.1
1,089 reviews
Search Aer Lingus flights
IcelandairPriceFrom $483Free CancellationRating
7.2
555 reviews
Search Icelandair flights
IberiaPriceFrom $542Free CancellationRating
7.0
2,662 reviews
Search Iberia flights
KLMPriceFrom $546Free CancellationRating
7.8
1,350 reviews
Search KLM flights
FinnairPriceFrom $551Free CancellationRating
7.7
1,300 reviews
Search Finnair flights
LufthansaPriceFrom $557Free CancellationRating
6.8
7,148 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 $440. Generally, Delta has 5 flights on this route every week with an average price of $834. Delta is rated 8.0/10 by our users.

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

    KLM (7.8/10 from 1,350 reviews) operates around 5 flights from Washington, D.C. to London in any given week. The average KLM airfare for this route is around $798, 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