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Cheap flights from Washington, D.C. to London Heathrow Airport from $238

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 8/1. 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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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

$238

Fastest flight time

7h 05m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Washington, D.C. in the past 72 hours is $238. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $476.
The fastest flight from Washington, D.C. to London Heathrow Airport takes 7h 05m
Direct flights go from Washington, D.C. to London Heathrow Airport every day.

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?

February. The cheapest time of year to fly to London Heathrow Airport from Washington, D.C. is February. 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?

At noon. Washington, D.C. to London Heathrow Airport flights are approximately 12% more expensive in the morning than at noon

What is the cheapest airline that flies to London Heathrow Airport from Washington, D.C.?

Scandinavian Airlines. Icelandair, Norse Atlantic UK, and PLAY are the most popular carriers operating from Washington, D.C. to London Heathrow Airport

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

19 days before. The cheapest time to buy a flight from Washington, D.C. to London Heathrow Airport is approximately 19 days to departure

How many flights depart from Washington, D.C. to London Heathrow Airport on average per day?

29 flights are operational weekly from Washington, D.C. to London Heathrow Airport as of March 2024. The most popular departure time for this route is 6:00PM, with 100% of flights per day taking off in the evening.

How many flights depart from Washington, D.C. to London Heathrow Airport on average per week?

As of March 2024, there are 204 flights per week flying from Washington, D.C. to London Heathrow Airport. The most common day of the week flights depart is Sunday, with 15% of flights taking off on this day.

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

There are 3 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 9% on your flight if you consider stops on a Washington, D.C. to London Heathrow Airport flight.

If you are looking to fly from Washington, D.C. to London, you are most likely going to fly from Washington, D.C. Dulles Intl Airport to London Heathrow Airport, the most popular airports on that route. You may be looking for an airport near Washington, D.C. Dulles Intl Airport to depart from when traveling to London and luckily, there are options! You can try Baltimore/Washington Airport which is located in Baltimore or Washington, D.C. Reagan-National Airport which is located in Washington, D.C.. The least expensive flight option from Washington, D.C. to London will typically be IAD — LHR during the month of March with an average price of $488 RT.

Washington, D.C. Dulles Intl Airport (IAD) to London Heathrow Airport (LHR)$488
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Baltimore/Washington Airport (BWI) to London Heathrow Airport (LHR)$501
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Washington, D.C. Reagan-National Airport (DCA) to London Heathrow Airport (LHR)$522
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Easily compare round-trip flights from Washington, D.C. to London Heathrow Airport

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Washington, D.C. to London Heathrow Airport by changing tabs
Multiple Airlines
Apr 15
IAD6:50 pmWashington, D.C. Dulles Intl
18h 40m
2 stops
LHR6:30 pmLondon Heathrow
Apr 27
LHR7:15 amLondon Heathrow
15h 25m
1 stop
IAD5:40 pmWashington, D.C. Dulles Intl
Aer Lingus
Apr 22
IAD5:10 pmWashington, D.C. Dulles Intl
12h 10m
1 stop
LHR10:20 amLondon Heathrow
May 8
LHR12:00 pmLondon Heathrow
12h 10m
1 stop
IAD7:10 pmWashington, D.C. Dulles Intl
Virgin Atlantic
Apr 14
IAD10:15 pmWashington, D.C. Dulles Intl
7h 15m
LHR10:30 amLondon Heathrow
Apr 23
LHR5:30 pmLondon Heathrow
7h 55m
IAD8:25 pmWashington, D.C. Dulles Intl
Delta
Apr 14
IAD10:15 pmWashington, D.C. Dulles Intl
7h 15m
LHR10:30 amLondon Heathrow
Apr 23
LHR8:40 amLondon Heathrow
12h 20m
1 stop
IAD4:00 pmWashington, D.C. Dulles Intl
KLM
Apr 14
IAD5:05 pmWashington, D.C. Dulles Intl
10h 00m
1 stop
LHR8:05 amLondon Heathrow
Apr 23
LHR8:40 amLondon Heathrow
12h 20m
1 stop
IAD4:00 pmWashington, D.C. Dulles Intl
Scandinavian Airlines
Apr 24
IAD5:15 pmWashington, D.C. Dulles Intl
18h 10m
2 stops
LHR4:25 pmLondon Heathrow
May 1
LHR7:30 pmLondon Heathrow
24h 55m
2 stops
IAD3:25 pmWashington, D.C. Dulles Intl

Find the cheapest one-way flights from Washington, D.C. to London Heathrow Airport

If you're looking for one-way flights from Washington, D.C. to London Heathrow Airport, view some of our deals below provided by British Airways, Icelandair and SWISS
Icelandair
Aug 1
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
Multiple Airlines
Apr 15
IAD6:50 pmWashington, D.C. Dulles Intl
21h 45m
2 stops
LHR9:35 pmLondon Heathrow
SWISS
Jul 24
IAD8:45 pmWashington, D.C. Dulles Intl
11h 15m
1 stop
LHR1:00 pmLondon Heathrow

Search last-minute flights to London Heathrow Airport from Washington, D.C.

Find and compare round-trip flight prices for your last-minute flight from Washington, D.C. to London Heathrow Airport
Scandinavian Airlines
Apr 2
IAD5:15 pmWashington, D.C. Dulles Intl
23h 25m
1 stop
LHR9:40 pmLondon Heathrow
Apr 8
LHR6:40 amLondon Heathrow
13h 45m
1 stop
IAD3:25 pmWashington, D.C. Dulles Intl
Aer Lingus
Apr 7
IAD8:40 pmWashington, D.C. Dulles Intl
11h 45m
1 stop
LHR1:25 pmLondon Heathrow
Apr 11
LHR1:25 pmLondon Heathrow
10h 45m
1 stop
IAD7:10 pmWashington, D.C. Dulles Intl
Multiple Airlines
Apr 2
BWI6:50 pmBaltimore/Washington
19h 35m
2 stops
LHR7:25 pmLondon Heathrow
Apr 8
LHR6:45 amLondon Heathrow
15h 55m
2 stops
BWI5:40 pmBaltimore/Washington
TAP AIR PORTUGAL
Apr 7
IAD10:20 pmWashington, D.C. Dulles Intl
14h 25m
1 stop
LHR5:45 pmLondon Heathrow
Apr 11
LHR8:00 amLondon Heathrow
12h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
Icelandair
Apr 7
BWI8:30 pmBaltimore/Washington
10h 25m
1 stop
LHR11:55 amLondon Heathrow
Apr 16
LHR9:25 pmLondon Heathrow
27h 00m
1 stop
BWI7:25 pmBaltimore/Washington
JetBlue
Apr 3
BWI9:42 amBaltimore/Washington
15h 48m
1 stop
LHR6:30 amLondon Heathrow
Apr 9
LHR8:25 amLondon Heathrow
15h 57m
1 stop
BWI7:22 pmBaltimore/Washington

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
Norse Atlantic UKPriceFrom $290Free CancellationRating
6.9
27 reviews
Search Norse Atlantic UK flights
PLAYPriceFrom $376Free CancellationRating
7.2
64 reviews
Search PLAY flights
LufthansaPriceFrom $387Free CancellationRating
7.0
7,892 reviews
Search Lufthansa flights
Air CanadaPriceFrom $392Free CancellationRating
7.0
6,743 reviews
Search Air Canada flights
DeltaPriceFrom $408Free CancellationRating
8.0
11,418 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $426Free CancellationRating
7.4
1,429 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $435Free CancellationRating
7.1
2,204 reviews
Search TAP AIR PORTUGAL flights
KLMPriceFrom $443Free CancellationRating
7.8
1,691 reviews
Search KLM flights
Aer LingusPriceFrom $480Free CancellationRating
7.2
1,383 reviews
Search Aer Lingus flights
IcelandairPriceFrom $491Free CancellationRating
7.1
1,407 reviews
Search Icelandair flights
  • Singapore Airlines Flights From Washington, D.C. to London Heathrow Airport

    Singapore Airlines flight deals from Washington, D.C. to London Heathrow Airport start from $583 round-trip. Over the 7 Singapore Airlines flights for this route in a normal week, average airfare is usually $706 round-trip - but some users have found much cheaper deals with momondo.

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

    Across 11,418 Delta reviews on momondo, the average score is 8.0/10. Delta flies from Washington, D.C. to London Heathrow Airport about 7 times each week, with ticket deals ranging from $408 to $762. Price data is based on momondo searches in the last 72 hours.


Aer Lingus flights from Washington, D.C. to London Heathrow Airport

Our best Aer Lingus deals on Washington, D.C. to London Heathrow Airport flight tickets
Aer Lingus
Apr 22
IAD5:10 pmWashington, D.C. Dulles Intl
12h 10m
1 stop
LHR10:20 amLondon Heathrow
May 8
LHR12:00 pmLondon Heathrow
12h 10m
1 stop
IAD7:10 pmWashington, D.C. Dulles Intl
Aer Lingus
Apr 21
IAD5:10 pmWashington, D.C. Dulles Intl
12h 10m
1 stop
LHR10:20 amLondon Heathrow
Apr 26
LHR7:40 amLondon Heathrow
13h 00m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
Aer Lingus
Apr 26
IAD8:40 pmWashington, D.C. Dulles Intl
11h 00m
1 stop
LHR12:40 pmLondon Heathrow
May 3
LHR8:25 amLondon Heathrow
12h 15m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl

Virgin Atlantic flights from Washington, D.C. to London Heathrow Airport

Our best Virgin Atlantic deals on Washington, D.C. to London Heathrow Airport flight tickets
Virgin Atlantic
Apr 14
IAD10:15 pmWashington, D.C. Dulles Intl
7h 15m
LHR10:30 amLondon Heathrow
Apr 23
LHR5:30 pmLondon Heathrow
7h 55m
IAD8:25 pmWashington, D.C. Dulles Intl
Virgin Atlantic
Apr 14
IAD10:15 pmWashington, D.C. Dulles Intl
7h 15m
LHR10:30 amLondon Heathrow
Apr 23
LHR8:55 pmLondon Heathrow
24h 05m
1 stop
IAD4:00 pmWashington, D.C. Dulles Intl
Virgin Atlantic
Apr 10
IAD10:15 pmWashington, D.C. Dulles Intl
7h 15m
LHR10:30 amLondon Heathrow
Apr 23
LHR9:00 amLondon Heathrow
12h 10m
1 stop
IAD4:10 pmWashington, D.C. Dulles Intl

  • 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 15m 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.


Alternative routes for Washington, D.C. to London Heathrow Airport

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Washington, D.C. to London Gatwick Airport Flights
Fastest flight time10h 15m
Cheapest price$460
Washington, D.C. to London City Airport Flights
Fastest flight time9h 45m
Cheapest price$603
Washington, D.C. to London Stansted Airport Flights
Fastest flight time10h 35m
Cheapest price$393
Washington, D.C. to London Luton Airport Flights
Fastest flight time11h 10m
Cheapest price$457
Washington, D.C. to London Southend Airport Flights
Fastest flight time22h 30m
Cheapest price$1,472

Similar Washington, D.C. to London Heathrow Airport flights

Flexible with your destination? Broaden your search and find flights similar to your Washington, D.C. to London Heathrow Airport route

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.


An easier way to manage your London Heathrow Airport trip

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