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Cheap flights from London Heathrow Airport to Washington, D.C. from $243

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 3/14. 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 round-trip flights

These are some of the best round-trip 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 layovers.

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.
7:35 am - 5:00 pmLHR-BWI
14h 25m1 stop
7:10 pm - 3:00 pmBWI-LHR
15h 50m1 stop
Mon, Mar 3 - Sun, Mar 9
7:35 am - 5:00 pmLHR-BWI
14h 25m1 stop
7:10 pm - 3:00 pmBWI-LHR
15h 50m1 stop
Fri, Mar 7 - Sun, Mar 9
11:10 am - 8:57 amLHR-DCA
25h 47m1 stop
7:00 am - 8:35 pmDCA-LHR
9h 35m1 stop
$612Lufthansa
Find Deal
Sat, Mar 15 - Fri, Mar 21
6:00 pm - 9:46 amLHR-IAD
19h 46m1 stop
11:50 pm - 11:05 amIAD-LHR
7h 15mnonstop
$613Lufthansa
Find Deal
Sat, Mar 15 - Sun, Mar 23
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
5:10 pm - 8:05 amIAD-LHR
9h 55m1 stop
$669Aer Lingus
Find Deal
Wed, Dec 4 - Tue, Dec 10
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$670Aer Lingus
Find Deal
Wed, Dec 4 - Wed, Dec 11
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$742British Airways
Find Deal
Mon, Feb 3 - Wed, Feb 19
3:00 pm - 9:00 pmLHR-DCA
11h 00m1 stop
4:10 pm - 7:10 amDCA-LHR
10h 00m1 stop
$771United Airlines
Find Deal
Wed, Jan 8 - Thu, Jan 30
3:00 pm - 9:00 pmLHR-DCA
11h 00m1 stop
6:00 pm - 9:10 amDCA-LHR
10h 10m1 stop
$772United Airlines
Find Deal
Mon, Jan 13 - Mon, Jan 20
3:45 pm - 11:20 pmLHR-DCA
12h 35m1 stop
11:46 am - 2:35 pmDCA-LHR
21h 49m2 stops
$899British Airways
Find Deal
Mon, Dec 9 - Mon, Dec 16
8:40 pm - 6:00 pmLHR-IAD
25h 20m1 stop
Fri, Mar 14
9:00 pm - 6:00 pmLHR-IAD
25h 00m2 stops
Fri, Mar 14
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
$471Icelandair
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Sat, Feb 1
8:40 pm - 6:30 pmLHR-BWI
26h 50m1 stop
$488Icelandair
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Tue, Dec 10
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
$559Aer Lingus
Find Deal
Wed, Dec 11
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
$562Aer Lingus
Find Deal
Mon, Dec 9
1:10 pm - 7:59 pmLHR-DCA
11h 49m1 stop
$796British Airways
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Wed, Jan 22
10:15 am - 4:48 pmLHR-DCA
11h 33m1 stop
$808British Airways
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Tue, Dec 10
9:10 am - 5:25 pmLHR-DCA
13h 15m1 stop
$852Lufthansa
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Mon, Jan 20
8:00 am - 2:22 pmLHR-DCA
11h 22m1 stop
$890Lufthansa
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Sat, Jan 18
2:30 pm - 10:19 amLHR-DCA
24h 49m1 stop
6:00 am - 8:35 pmDCA-LHR
9h 35m1 stop
$596Lufthansa
Find Deal
Sat, Nov 23 - Mon, Nov 25
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
7:40 pm - 7:30 pmIAD-LHR
18h 50m1 stop
$640Icelandair
Find Deal
Tue, Nov 26 - Tue, Dec 10
1:45 pm - 7:29 pmLHR-IAD
34h 44m1 stop
10:30 pm - 11:05 amIAD-LHR
7h 35mnonstop
$645United Airlines
Find Deal
Sat, Nov 23 - Sun, Nov 24
8:50 am - 3:40 pmLHR-IAD
11h 50m1 stop
5:10 pm - 9:05 amIAD-LHR
10h 55m1 stop
$662Aer Lingus
Find Deal
Tue, Nov 26 - Sat, Dec 7
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
9:15 pm - 11:25 amIAD-LHR
9h 10m1 stop
$710Aer Lingus
Find Deal
Sun, Nov 24 - Tue, Nov 26
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$880Delta
Find Deal
Tue, Nov 26 - Tue, Dec 10
6:30 am - 3:45 pmLHR-IAD
14h 15m1 stop
6:25 pm - 6:55 amIAD-LHR
7h 30mnonstop
$911Delta
Find Deal
Tue, Nov 26 - Tue, Dec 10
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
5:56 pm - 7:10 amIAD-LHR
32h 14m1 stop
$1,069United Airlines
Find Deal
Fri, Nov 22 - Sat, Nov 30
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$1,177British Airways
Find Deal
Mon, Nov 25 - Mon, Dec 2
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$1,184British Airways
Find Deal
Mon, Nov 25 - Mon, Dec 2
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
9:55 pm - 10:05 amIAD-LHR
7h 10mnonstop
Mon, Jan 13 - Tue, Jan 21
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
9:50 pm - 10:05 amIAD-LHR
7h 15mnonstop
$714Delta
Find Deal
Mon, Mar 24 - Wed, Apr 2
12:25 pm - 5:05 pmLHR-IAD
8h 40mnonstop
9:40 pm - 9:10 amIAD-LHR
7h 30mnonstop
$722Delta
Find Deal
Mon, Mar 17 - Thu, Mar 27
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$742British Airways
Find Deal
Mon, Feb 3 - Wed, Feb 19
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$750British Airways
Find Deal
Mon, Feb 3 - Wed, Feb 19
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$767Lufthansa
Find Deal
Fri, Jan 31 - Mon, Feb 3
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$777Lufthansa
Find Deal
Fri, Dec 6 - Wed, Dec 11
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$869United Airlines
Find Deal
Wed, Dec 4 - Tue, Dec 31
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$893Aer Lingus
Find Deal
Thu, Feb 6 - Sat, Feb 15
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$922United Airlines
Find Deal
Tue, Dec 24 - Tue, Dec 31

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
Feb 17
LHR6:30 pmLondon Heathrow
25h 00m
1 stop
IAD2:30 pmWashington, D.C. Dulles Intl
Feb 22
IAD5:30 pmWashington, D.C. Dulles Intl
24h 10m
1 stop
LHR10:40 pmLondon Heathrow
TAP AIR PORTUGAL
Jan 22
LHR6:30 pmLondon Heathrow
25h 30m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Jan 26
IAD10:30 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
LHR5:30 pmLondon Heathrow
TAP AIR PORTUGAL
Jan 25
LHR6:00 amLondon Heathrow
14h 00m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Feb 8
IAD5:30 pmWashington, D.C. Dulles Intl
23h 05m
1 stop
LHR9:35 pmLondon Heathrow

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

Our best Austrian Airlines deals on London Heathrow Airport to Washington, D.C. flight tickets
Austrian Airlines
Dec 5
LHR1:35 pmLondon Heathrow
31h 38m
1 stop
IAD4:13 pmWashington, D.C. Dulles Intl
Dec 7
IAD4:10 pmWashington, D.C. Dulles Intl
34h 15m
1 stop
LHR7:25 amLondon Heathrow
Austrian Airlines
Dec 4
LHR12:05 pmLondon Heathrow
8h 35m
IAD3:40 pmWashington, D.C. Dulles Intl
Dec 11
IAD6:25 pmWashington, D.C. Dulles Intl
7h 15m
LHR6:40 amLondon 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 month of February is, on average, the cheapest month to fly to Washington, D.C. from London Heathrow Airport, with most prices found around $588. If you’re not able to fly to Washington, D.C. in February, then November is your next best option. Flight prices from London Heathrow Airport to Washington, D.C. during November average around $602.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $708. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Washington, D.C. for around $784.

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

In the morning 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 $671. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $878. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from London Heathrow to Washington, D.C. Dulles Intl 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 59 days in advance when prices tend to average $697. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $597.

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 52% 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 November 2024, prices for London Heathrow Airport to Washington, D.C. flights are approximately 26% more expensive 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 round-trip 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

$243

Fastest flight time

8h 15m

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 $243. The best round-trip flight deal from London Heathrow Airport to Washington, D.C. found on momondo in the last 72 hours is $443.
The fastest flight from London Heathrow Airport to Washington, D.C. takes 8h 15m
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 distance between London Heathrow and Washington, D.C. is about 3649.4 mi. A reasonable flight in good conditions will take 8h 15m.

  • 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 necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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 $350Free CancellationRating
7.1
88 reviews
Search PLAY flights
IcelandairPriceFrom $517Free CancellationRating
7.2
553 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $525Free CancellationRating
7.3
1,294 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $538Free CancellationRating
7.1
1,089 reviews
Search Aer Lingus flights
Virgin AtlanticPriceFrom $562Free CancellationRating
7.5
663 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $581Free CancellationRating
7.0
2,661 reviews
Search Iberia flights
British AirwaysPriceFrom $587Free CancellationRating
6.6
6,831 reviews
Search British Airways flights
United AirlinesPriceFrom $590Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $598Free CancellationRating
7.1
1,891 reviews
Search TAP AIR PORTUGAL flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.6
804 reviews
Search Austrian Airlines flights
  • Delta Flights From London Heathrow Airport to Washington, D.C.

    Delta flies from London Heathrow Airport to Washington, D.C. around 3 times per week, with 8,755 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 $608 (round-trip), much lower than the average airfare cost of $922 for Delta flights on this route.

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

    Across 804 Austrian Airlines reviews on momondo, the average score is 7.6/10. Austrian Airlines flies from London Heathrow Airport to Washington, D.C. about 14 times each week, with ticket deals ranging from $608 to $858. 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 London to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Washington, D.C. for you.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from London with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from London.

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

Yes momondo offers price alerts on flights to Washington, D.C. from London. 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 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.