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Cheap flights from Washington, D.C. to London Heathrow Airport from $310

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 7/17. 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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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
American Airlines
Sep 25
DCA3:50 pmWashington, D.C. Reagan-National
9h 50m
1 stop
LHR6:40 amLondon Heathrow
Oct 30
LHR11:25 amLondon Heathrow
11h 50m
1 stop
DCA7:15 pmWashington, D.C. Reagan-National
British Airways
Oct 22
DCA3:50 pmWashington, D.C. Reagan-National
10h 40m
1 stop
LHR7:30 amLondon Heathrow
Nov 1
LHR2:10 pmLondon Heathrow
13h 49m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
Finnair
Oct 15
DCA7:45 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR10:30 amLondon Heathrow
Oct 22
LHR3:15 pmLondon Heathrow
13h 04m
1 stop
DCA11:19 pmWashington, D.C. Reagan-National
Multiple Airlines
Nov 6
DCA11:05 amWashington, D.C. Reagan-National
15h 05m
1 stop
LHR7:10 amLondon Heathrow
Nov 13
LHR11:10 amLondon Heathrow
15h 35m
2 stops
DCA9:45 pmWashington, D.C. Reagan-National
United Airlines
Oct 8
DCA1:00 pmWashington, D.C. Reagan-National
12h 30m
2 stops
LHR6:30 amLondon Heathrow
Oct 16
LHR9:30 amLondon Heathrow
11h 29m
1 stop
DCA3:59 pmWashington, D.C. Reagan-National
Air Canada
Oct 1
DCA4:55 pmWashington, D.C. Reagan-National
12h 05m
1 stop
LHR10:00 amLondon Heathrow
Oct 8
LHR9:30 amLondon Heathrow
15h 25m
2 stops
DCA7:55 pmWashington, D.C. Reagan-National

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, Iberia and Icelandair
Multiple Airlines
Jul 17
IAD6:50 pmWashington, D.C. Dulles Intl
19h 05m
3 stops
LHR6:55 pmLondon Heathrow
Icelandair
Jul 27
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
JetBlue
Oct 22
DCA12:30 pmWashington, D.C. Reagan-National
13h 00m
1 stop
LHR6:30 amLondon 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
Icelandair
Jun 9
IAD11:15 pmWashington, D.C. Dulles Intl
31h 40m
1 stop
LHR11:55 amLondon Heathrow
Jun 16
LHR9:25 pmLondon Heathrow
26h 50m
1 stop
IAD7:15 pmWashington, D.C. Dulles Intl
Multiple Airlines
Jun 5
IAD8:30 pmWashington, D.C. Dulles Intl
16h 10m
2 stops
LHR5:40 pmLondon Heathrow
Jun 12
LHR6:40 amLondon Heathrow
20h 30m
2 stops
IAD10:10 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Jun 6
IAD10:20 pmWashington, D.C. Dulles Intl
15h 30m
1 stop
LHR6:50 pmLondon Heathrow
Jun 11
LHR6:00 amLondon Heathrow
14h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
JetBlue
Jun 9
DCA10:20 amWashington, D.C. Reagan-National
15h 10m
1 stop
LHR6:30 amLondon Heathrow
Jun 20
LHR8:25 amLondon Heathrow
11h 20m
1 stop
DCA2:45 pmWashington, D.C. Reagan-National
Lufthansa
Jun 7
IAD10:20 pmWashington, D.C. Dulles Intl
13h 45m
1 stop
LHR5:05 pmLondon Heathrow
Jun 12
LHR10:50 amLondon Heathrow
13h 35m
1 stop
IAD7:25 pmWashington, D.C. Dulles Intl
British Airways
Jun 5
BWI6:05 pmBaltimore/Washington
10h 00m
1 stop
LHR9:05 amLondon Heathrow
Jun 12
LHR4:35 pmLondon Heathrow
8h 00m
BWI7:35 pmBaltimore/Washington

American Airlines flights from Washington, D.C. to London Heathrow Airport

Our best American Airlines deals on Washington, D.C. to London Heathrow Airport flight tickets
American Airlines
Sep 25
DCA3:50 pmWashington, D.C. Reagan-National
9h 50m
1 stop
LHR6:40 amLondon Heathrow
Oct 30
LHR11:25 amLondon Heathrow
11h 50m
1 stop
DCA7:15 pmWashington, D.C. Reagan-National
American Airlines
Sep 25
DCA5:00 pmWashington, D.C. Reagan-National
9h 45m
1 stop
LHR7:45 amLondon Heathrow
Oct 30
LHR11:25 amLondon Heathrow
11h 50m
1 stop
DCA7:15 pmWashington, D.C. Reagan-National
American Airlines
Nov 12
DCA5:28 pmWashington, D.C. Reagan-National
10h 47m
1 stop
LHR9:15 amLondon Heathrow
Nov 19
LHR8:40 amLondon Heathrow
12h 40m
1 stop
DCA4:20 pmWashington, D.C. Reagan-National

Iberia flights from Washington, D.C. to London Heathrow Airport

Our best Iberia deals on Washington, D.C. to London Heathrow Airport flight tickets
Iberia
Sep 10
DCA11:57 amWashington, D.C. Reagan-National
15h 28m
2 stops
LHR8:25 amLondon Heathrow
Sep 19
LHR5:00 pmLondon Heathrow
11h 19m
1 stop
DCA11:19 pmWashington, D.C. Reagan-National
Iberia
Aug 25
IAD6:52 amWashington, D.C. Dulles Intl
20h 08m
1 stop
LHR8:00 amLondon Heathrow
Sep 8
LHR5:35 pmLondon Heathrow
8h 00m
IAD8:35 pmWashington, D.C. Dulles Intl
Iberia
Jul 21
BWI9:20 pmBaltimore/Washington
7h 10m
LHR9:30 amLondon Heathrow
Aug 22
LHR4:35 pmLondon Heathrow
8h 00m
BWI7:35 pmBaltimore/Washington

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?

November. The cheapest time of year to fly to London Heathrow Airport from Washington, D.C. is November. 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 4% 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. Aer Lingus, 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?

27 days before. The cheapest time to buy a flight from Washington, D.C. to London Heathrow Airport is approximately 27 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 May 2024. The most popular departure time for this route is 9:00PM, with 65% 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 May 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 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 14% on your flight if you consider stops on a Washington, D.C. to London Heathrow Airport flight.

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

$310

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 $310. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $554.
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.


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 $182Free CancellationRating
6.8
29 reviews
Search Norse Atlantic UK flights
PLAYPriceFrom $380Free CancellationRating
7.3
69 reviews
Search PLAY flights
LufthansaPriceFrom $387Free CancellationRating
6.9
7,582 reviews
Search Lufthansa flights
Air CanadaPriceFrom $392Free CancellationRating
7.0
7,004 reviews
Search Air Canada flights
KLMPriceFrom $401Free CancellationRating
7.8
1,520 reviews
Search KLM flights
DeltaPriceFrom $406Free CancellationRating
8.0
10,457 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $427Free CancellationRating
7.4
1,402 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $478Free CancellationRating
7.2
1,306 reviews
Search Aer Lingus flights
TAP AIR PORTUGALPriceFrom $478Free CancellationRating
7.1
2,104 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $497Free CancellationRating
7.0
1,221 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 $561 round-trip. Over the 7 Singapore Airlines flights for this route in a normal week, average airfare is usually $672 round-trip - but some users have found much cheaper deals with momondo.

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

    Across 10,457 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 $406 to $778. 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.


An easier way to manage your London Heathrow Airport trip

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