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Cheap flights from London Heathrow Airport to Washington, D.C. from £241

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Washington, D.C. departing on 29/1. 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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Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap return flights

These are some of the best return flight deals from London Heathrow Airport to Washington, D.C. 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 London Heathrow Airport to Washington, D.C..

Cheap last-minute flights

Planning a quick getaway from London Heathrow Airport to Washington, D.C.? 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 Washington, D.C., so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from London Heathrow Airport to Washington, D.C.

Find recent round-trip train or bus tickets from London Heathrow Airport to Washington, D.C..

All round-trip flight deals to Washington, D.C.

The cheapest plane tickets to Washington, D.C. found on KAYAK recently.
20:40 - 18:00LHR-BWI
25h 20m1 stop
19:10 - 15:00BWI-LHR
15h 50m1 stop
Tue, 18 Mar - Tue, 25 Mar
20:40 - 17:00LHR-BWI
25h 20m1 stop
18:50 - 14:40BWI-LHR
14h 50m1 stop
Tue, 28 Jan - Wed, 23 Apr
15:25 - 18:45LHR-BWI
8h 20mdirect
13:48 - 10:15BWI-LHR
15h 27m2 stops
£449Finnair
Find Deal
Wed, 5 Feb - Mon, 17 Feb
07:40 - 16:30LHR-IAD
12h 50m1 stop
23:20 - 15:50IAD-LHR
12h 30m1 stop
£452Lufthansa
Find Deal
Mon, 17 Mar - Thu, 27 Mar
07:30 - 14:40LHR-IAD
12h 10m1 stop
17:17 - 06:30IAD-LHR
32h 13m1 stop
£454Lufthansa
Find Deal
Tue, 28 Jan - Sat, 1 Feb
11:05 - 21:25LHR-BWI
15h 20m1 stop
14:10 - 10:15BWI-LHR
15h 05m2 stops
£457Finnair
Find Deal
Wed, 7 May - Wed, 21 May
17:50 - 15:45LHR-IAD
26h 55m1 stop
18:45 - 07:15IAD-LHR
7h 30mdirect
£470Virgin Atlantic
Find Deal
Sun, 2 Feb - Mon, 10 Feb
12:10 - 15:35LHR-IAD
8h 25mdirect
18:00 - 06:15IAD-LHR
7h 15mdirect
£495British Airways
Find Deal
Mon, 13 Jan - Mon, 20 Jan
15:25 - 18:45LHR-BWI
8h 20mdirect
20:30 - 08:40BWI-LHR
7h 10mdirect
£495British Airways
Find Deal
Mon, 13 Jan - Mon, 20 Jan
14:35 - 23:44LHR-DCA
14h 09m1 stop
13:30 - 08:35DCA-LHR
14h 05m1 stop
£498Virgin Atlantic
Find Deal
Wed, 8 Jan - Wed, 30 Apr
15:15 - 09:59LHR-BWI
47h 44m2 stops
Wed, 29 Jan
20:40 - 17:00LHR-BWI
25h 20m1 stop
Tue, 25 Feb
15:15 - 09:59LHR-BWI
47h 44m2 stops
Wed, 29 Jan
10:10 - 18:00LHR-DCA
12h 50m1 stop
£453Virgin Atlantic
Find Deal
Sat, 1 Mar
11:50 - 20:55LHR-DCA
14h 05m1 stop
£468British Airways
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Mon, 20 Jan
06:30 - 18:00LHR-DCA
16h 30m2 stops
£489Virgin Atlantic
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Sat, 8 Mar
11:20 - 19:14LHR-DCA
12h 54m1 stop
£496British Airways
Find Deal
Thu, 23 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
£526Finnair
Find Deal
Thu, 23 Jan
12:10 - 15:35LHR-IAD
8h 25mdirect
£528Finnair
Find Deal
Thu, 16 Jan
14:30 - 22:37LHR-DCA
13h 07m1 stop
£1,108Lufthansa
Find Deal
Sun, 5 Jan
16:55 - 17:00LHR-BWI
53h 05m2 stops
19:30 - 10:50BWI-LHR
10h 20m1 stop
Mon, 23 Dec - Thu, 9 Jan
18:40 - 15:40LHR-IAD
26h 00m1 stop
17:10 - 18:30IAD-LHR
20h 20m1 stop
£622Scandinavian Airlines
Find Deal
Tue, 24 Dec - Sat, 11 Jan
11:45 - 19:15LHR-DCA
12h 30m1 stop
15:15 - 10:00DCA-LHR
13h 45m1 stop
£828Finnair
Find Deal
Mon, 23 Dec - Fri, 27 Dec
12:25 - 16:05LHR-IAD
8h 40mdirect
21:00 - 09:30IAD-LHR
7h 30mdirect
£936Virgin Atlantic
Find Deal
Tue, 24 Dec - Sat, 11 Jan
11:45 - 19:15LHR-DCA
12h 30m1 stop
18:29 - 10:00DCA-LHR
10h 31m1 stop
£974Finnair
Find Deal
Fri, 20 Dec - Fri, 27 Dec
11:30 - 23:28LHR-BWI
16h 58m2 stops
12:00 - 06:20BWI-LHR
13h 20m1 stop
£1,026Virgin Atlantic
Find Deal
Tue, 24 Dec - Sat, 11 Jan
14:30 - 11:41LHR-IAD
26h 11m1 stop
22:33 - 20:35IAD-LHR
17h 02m1 stop
£1,038Lufthansa
Find Deal
Sat, 21 Dec - Sat, 28 Dec
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£1,055British Airways
Find Deal
Tue, 24 Dec - Tue, 7 Jan
18:00 - 11:41LHR-IAD
22h 41m1 stop
17:50 - 20:50IAD-LHR
22h 00m1 stop
£1,057Lufthansa
Find Deal
Sat, 21 Dec - Fri, 27 Dec
16:20 - 19:25LHR-BWI
32h 05m2 stops
20:30 - 08:40BWI-LHR
7h 10mdirect
£1,168British Airways
Find Deal
Mon, 23 Dec - Mon, 30 Dec
12:25 - 17:05LHR-IAD
8h 40mdirect
21:40 - 09:10IAD-LHR
7h 30mdirect
£465KLM
Find Deal
Mon, 17 Mar - Thu, 27 Mar
17:05 - 20:01LHR-IAD
7h 56mdirect
21:50 - 10:05IAD-LHR
7h 15mdirect
£468KLM
Find Deal
Tue, 13 May - Thu, 22 May
16:30 - 19:45LHR-IAD
8h 15mdirect
18:00 - 06:15IAD-LHR
7h 15mdirect
£476British Airways
Find Deal
Wed, 5 Feb - Wed, 19 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£481British Airways
Find Deal
Mon, 13 Jan - Mon, 20 Jan
16:40 - 19:50LHR-IAD
8h 10mdirect
18:30 - 06:55IAD-LHR
7h 25mdirect
£487Lufthansa
Find Deal
Tue, 29 Apr - Tue, 6 May
17:05 - 20:01LHR-IAD
7h 56mdirect
21:50 - 10:05IAD-LHR
7h 15mdirect
£488Virgin Atlantic
Find Deal
Wed, 7 May - Wed, 21 May
12:25 - 16:05LHR-IAD
8h 40mdirect
20:40 - 09:10IAD-LHR
7h 30mdirect
£498Virgin Atlantic
Find Deal
Mon, 27 Jan - Thu, 20 Feb
12:05 - 15:40LHR-IAD
8h 35mdirect
23:35 - 10:50IAD-LHR
7h 15mdirect
£503Lufthansa
Find Deal
Fri, 7 Mar - Mon, 10 Mar
15:25 - 18:45LHR-BWI
8h 20mdirect
20:30 - 08:40BWI-LHR
7h 10mdirect
£506Finnair
Find Deal
Mon, 13 Jan - Mon, 20 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
22:40 - 11:05IAD-LHR
7h 25mdirect
£513Finnair
Find Deal
Tue, 28 Jan - Wed, 9 Apr

TAP AIR PORTUGAL flights from London Heathrow Airport to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Washington, D.C. flight tickets
TAP AIR PORTUGAL
9 Feb
LHR18:30London Heathrow
23h 30m
1 stop
IAD13:00Washington, D.C. Dulles Intl
16 Feb
IAD22:30Washington, D.C. Dulles Intl
19h 10m
1 stop
LHR22:40London Heathrow
TAP AIR PORTUGAL
25 Dec
LHR08:15London Heathrow
17h 45m
1 stop
IAD21:00Washington, D.C. Dulles Intl
9 Jan
IAD17:30Washington, D.C. Dulles Intl
23h 05m
1 stop
LHR21:35London Heathrow

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

Our best Lufthansa deals on London Heathrow Airport to Washington, D.C. flight tickets
Lufthansa
17 Mar
LHR07:40London Heathrow
12h 50m
1 stop
IAD16:30Washington, D.C. Dulles Intl
27 Mar
IAD23:20Washington, D.C. Dulles Intl
12h 30m
1 stop
LHR15:50London Heathrow
Lufthansa
28 Jan
LHR07:30London Heathrow
12h 10m
1 stop
IAD14:40Washington, D.C. Dulles Intl
1 Feb
IAD17:17Washington, D.C. Dulles Intl
32h 13m
1 stop
LHR06:30London Heathrow
Lufthansa
24 Feb
LHR08:30London Heathrow
12h 20m
1 stop
IAD15:50Washington, D.C. Dulles Intl
20 Mar
IAD23:20Washington, D.C. Dulles Intl
16h 15m
1 stop
LHR19:35London Heathrow

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Heathrow Airport to Washington, D.C.

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 typical price of a round-trip flight between London Heathrow Airport and Washington, D.C.?

What is the cheapest month to fly to Washington, D.C.?

The cheapest month to fly to Washington, D.C. from London Heathrow Airport is in February. Flight prices, which tend to average around £467, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in February, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £495.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from London Heathrow Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £571. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £615.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from London Heathrow Airport to Washington, D.C. when you can find flight prices for as low as £541. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the afternoon, with an average ticket price of £666. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Washington, D.C.?

The ideal time to book your flight to Washington, D.C. is 60 days in advance, when prices tend to average £643. Keep in mind that you might be able to find cheaper flights to Washington, D.C. at any time. In fact, our users found flights for as low as £446 in the past 72 hours.

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

There are 4 cabin classes available to choose from on London Heathrow to Washington, D.C. 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 London Heathrow Airport to Washington, D.C. flights?

You could potentially save up to 51% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. flight.

How have London Heathrow Airport to Washington, D.C. flight prices changed over time?

As of December 2024, prices for London Heathrow Airport to Washington, D.C. flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Washington, D.C. (LHR to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Washington, D.C.

Best price found

£241

Fastest flight time

7h 56m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from London Heathrow Airport in the past 72 hours is £241. The best return flight deal from London Heathrow Airport to Washington, D.C. found on momondo in the last 72 hours is £370.
The fastest flight from London Heathrow Airport to Washington, D.C. takes 7h 56m
Direct flights go from London Heathrow Airport to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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

    The straight-line distance from London Heathrow to Washington, D.C. is 3649.4 mi. Flights usually cover this in 7h 56m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London Heathrow Airport to Washington, D.C. are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Washington, D.C.?

  • How old do you have to be to fly from London Heathrow Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from London Heathrow Airport to Washington, D.C.?

  • What is the most popular airline from London Heathrow Airport to Washington, D.C.?


Best airlines flying from London Heathrow Airport to Washington, D.C.

Compare and see reviews for airlines that fly from London Heathrow Airport to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom £248Free CancellationRating
7.1
91 reviews
Search PLAY flights
DeltaPriceFrom £338Free CancellationRating
8.0
8,600 reviews
Search Delta flights
JetBluePriceFrom £356Free CancellationRating
7.4
3,274 reviews
Search JetBlue flights
IcelandairPriceFrom £385Free CancellationRating
7.1
510 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £400Free CancellationRating
7.1
1,878 reviews
Search TAP AIR PORTUGAL flights
Brussels AirlinesPriceFrom £404Free CancellationRating
7.4
353 reviews
Search Brussels Airlines flights
Scandinavian AirlinesPriceFrom £416Free CancellationRating
7.3
1,308 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom £419Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air CanadaPriceFrom £432Free CancellationRating
7.0
8,391 reviews
Search Air Canada flights
Aer LingusPriceFrom £456Free CancellationRating
7.1
1,076 reviews
Search Aer Lingus flights
  • Delta Flights From London Heathrow Airport to Washington, D.C.

    Delta flies from London Heathrow Airport to Washington, D.C. around 1 time per week, with 8,600 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Washington, D.C. in the last 72 hours was £428 (round-trip), much lower than the average airfare cost of £842 for Delta flights on this route.

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

    The best KLM deal for London Heathrow Airport to Washington, D.C. flight tickets found on momondo in the last 72 hours was £624, round-trip. It should be noted that an average KLM flight deal for this route in this time was higher, at £810 round-trip. KLM operates 1 flight out of London Heathrow Airport into Washington, D.C. in an average week, so prices vary by time and availability. 1,349 KLM reviews by users on momondo have scored the airline at 7.8/10.


Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

Finding the right flight to Washington, D.C. from London 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 Washington, D.C. quick and easy, saving you time and money.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Flights from London to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Washington, D.C..

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.