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Cheap flights from Washington, D.C. to London Heathrow Airport from $194

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 1/6. 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.
7:30 pm - 7:30 pmBWI-LHR
19h 00m1 stop
12:15 pm - 6:30 pmLHR-BWI
11h 15m1 stop
$461Icelandair
Find Deal
Wed, Jan 8 - Fri, Jan 17
7:30 pm - 10:50 amBWI-LHR
10h 20m1 stop
12:15 pm - 6:30 pmLHR-BWI
11h 15m1 stop
$463Icelandair
Find Deal
Sun, Jan 12 - Sun, Jan 19
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
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
$601Virgin Atlantic
Find Deal
Mon, Dec 9 - Wed, Dec 18
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
6:30 am - 3:45 pmLHR-IAD
14h 15m1 stop
$604Virgin Atlantic
Find Deal
Mon, Dec 9 - Wed, Dec 18
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
1:45 pm - 4:25 pmLHR-IAD
31h 40m1 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
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Wed, Feb 19 - Wed, Feb 26
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
8:30 am - 3:50 pmLHR-IAD
12h 20m1 stop
$616United Airlines
Find Deal
Wed, Dec 11 - Tue, Jan 14
5:26 pm - 9:15 amBWI-LHR
10h 49m1 stop
7:40 pm - 7:57 pmLHR-BWI
29h 17m2 stops
$635British Airways
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Sun, Jan 19 - Mon, Jan 27
7:30 pm - 7:30 pmBWI-LHR
19h 00m1 stop
$194Icelandair
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Mon, Jan 6
7:40 pm - 10:50 amIAD-LHR
10h 10m1 stop
$194Icelandair
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Mon, Feb 24
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$391Iberia
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Sun, Dec 8
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$391Iberia
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Sun, Dec 8
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$394British Airways
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Sun, Dec 8
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$399United Airlines
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Mon, Jan 20
11:05 am - 7:10 amDCA-LHR
15h 05m2 stops
$403United Airlines
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Sun, Dec 8
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$408British Airways
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Mon, Jan 13
8:16 pm - 12:00 pmBWI-LHR
10h 44m1 stop
$448American Airlines
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Thu, Dec 12
4:59 pm - 9:30 amDCA-LHR
11h 31m1 stop
$450American Airlines
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Thu, Jan 2
5:10 pm - 4:25 pmIAD-LHR
18h 15m2 stops
6:40 am - 3:40 pmLHR-IAD
14h 00m1 stop
$675Scandinavian Airlines
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Sat, Nov 23 - Mon, Nov 25
7:30 pm - 10:50 amBWI-LHR
10h 20m1 stop
8:40 pm - 6:30 pmLHR-BWI
26h 50m1 stop
$688Icelandair
Find Deal
Sun, Nov 24 - Sun, Dec 8
6:30 pm - 6:40 amIAD-LHR
7h 10mnonstop
8:55 am - 3:30 pmLHR-IAD
35h 35m1 stop
$731United Airlines
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Tue, Nov 26 - Tue, Dec 3
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$750Iberia
Find Deal
Mon, Nov 25 - Wed, Dec 4
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$801Iberia
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Sun, Nov 24 - Sun, Dec 8
1:52 pm - 9:15 amBWI-LHR
14h 23m1 stop
7:10 pm - 7:21 pmLHR-BWI
29h 11m2 stops
$812British Airways
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Tue, Nov 26 - Tue, Dec 3
11:05 am - 7:10 amDCA-LHR
15h 05m2 stops
3:00 pm - 9:00 pmLHR-DCA
11h 00m1 stop
$813United Airlines
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Tue, Nov 26 - Tue, Dec 3
8:10 pm - 7:00 amIAD-LHR
29h 50m1 stop
7:10 pm - 7:31 pmLHR-IAD
29h 21m2 stops
$819British Airways
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Sat, Nov 23 - Tue, Dec 3
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
11:50 am - 7:21 pmLHR-BWI
12h 31m1 stop
$1,062American Airlines
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Fri, Nov 22 - Wed, Nov 27
6:35 pm - 10:00 amDCA-LHR
10h 25m1 stop
10:15 am - 5:07 pmLHR-DCA
11h 52m1 stop
$1,067American Airlines
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Fri, Nov 22 - Tue, Nov 26
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
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$609Virgin Atlantic
Find Deal
Mon, Dec 9 - Wed, Dec 25
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
$610Virgin Atlantic
Find Deal
Mon, Dec 9 - Wed, Dec 18
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$615British Airways
Find Deal
Wed, Feb 19 - Wed, Feb 26
10:45 pm - 11:05 amIAD-LHR
7h 20mnonstop
5:25 pm - 8:30 pmLHR-IAD
8h 05mnonstop
$617British Airways
Find Deal
Wed, Apr 23 - Wed, May 7
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
$627United Airlines
Find Deal
Wed, Dec 4 - Wed, Dec 11
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
$631United Airlines
Find Deal
Sun, Dec 8 - Fri, Jan 10
9:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 7:45 pmLHR-BWI
8h 20mnonstop
$641American Airlines
Find Deal
Wed, Mar 12 - Thu, Mar 27
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
$658American Airlines
Find Deal
Wed, Dec 4 - Thu, Dec 12

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
Jan 8
BWI7:30 pmBaltimore/Washington
19h 00m
1 stop
LHR7:30 pmLondon Heathrow
Jan 17
LHR12:15 pmLondon Heathrow
11h 15m
1 stop
BWI6:30 pmBaltimore/Washington
Icelandair
Jan 12
BWI7:30 pmBaltimore/Washington
10h 20m
1 stop
LHR10:50 amLondon Heathrow
Jan 19
LHR12:15 pmLondon Heathrow
11h 15m
1 stop
BWI6:30 pmBaltimore/Washington
Icelandair
Mar 16
BWI8:30 pmBaltimore/Washington
10h 20m
1 stop
LHR10:50 amLondon Heathrow
Mar 22
LHR8:40 pmLondon Heathrow
26h 50m
1 stop
BWI7:30 pmBaltimore/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
Jan 28
IAD5:30 pmWashington, D.C. Dulles Intl
24h 10m
1 stop
LHR10:40 pmLondon Heathrow
Feb 13
LHR6:00 amLondon Heathrow
14h 00m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Jan 31
IAD10:30 pmWashington, D.C. Dulles Intl
15h 25m
1 stop
LHR6:55 pmLondon Heathrow
Feb 7
LHR7:55 pmLondon Heathrow
24h 05m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Jan 28
IAD5:30 pmWashington, D.C. Dulles Intl
24h 10m
1 stop
LHR10:40 pmLondon Heathrow
Feb 5
LHR6:00 amLondon Heathrow
20h 00m
1 stop
IAD9:00 pmWashington, 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. Most expensive is June

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

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

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 11% more expensive at noon 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 4 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 47% 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 14% 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 round-trip 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

$194

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 $194. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $461.
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?

    Washington, D.C. and London Heathrow are 3649.4 mi apart from one another. 7h 10m is a normal flight duration for this route.

  • 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 were last updated today.

  • 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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 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
PLAYPriceFrom $366Free 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
8,758 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
2,663 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 Heathrow Airport

    Delta flight deals from Washington, D.C. to London Heathrow Airport start from $440 round-trip. Over the 4 Delta flights for this route in a normal week, average airfare is usually $834 round-trip - but some users have found much cheaper deals with momondo.

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

    Across 1,350 KLM reviews on momondo, the average score is 7.8/10. KLM flies from Washington, D.C. to London Heathrow Airport about 4 times each week, with ticket deals ranging from $546 to $798. 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?

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?

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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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