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Cheap flights from London Heathrow Airport to Washington, D.C. from $306

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 2/25. 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.
7:30 am - 5:00 pmLHR-BWI
14h 30m1 stop
7:10 pm - 2:55 pmBWI-LHR
15h 45m1 stop
Wed, Mar 5 - Wed, Mar 26
7:35 am - 5:00 pmLHR-BWI
14h 25m1 stop
7:10 pm - 3:00 pmBWI-LHR
15h 50m1 stop
Tue, Mar 4 - Tue, Mar 25
9:50 am - 3:40 pmLHR-IAD
10h 50m1 stop
5:10 pm - 11:25 amIAD-LHR
13h 15m1 stop
$599Aer Lingus
Find Deal
Thu, Jan 16 - Tue, Jan 21
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$627British Airways
Find Deal
Mon, Jan 13 - Mon, Jan 20
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
6:00 pm - 6:15 amIAD-LHR
7h 15mnonstop
$629British Airways
Find Deal
Mon, Jan 27 - Mon, Feb 3
8:40 am - 3:45 pmLHR-IAD
12h 05m1 stop
8:40 pm - 9:10 amIAD-LHR
7h 30mnonstop
$638Delta
Find Deal
Mon, Dec 30 - Thu, Jan 9
6:30 am - 3:45 pmLHR-IAD
14h 15m1 stop
9:50 pm - 10:05 amIAD-LHR
7h 15mnonstop
$641Delta
Find Deal
Mon, Jan 27 - Wed, Apr 9
12:05 pm - 7:31 pmLHR-DCA
12h 26m1 stop
6:50 pm - 6:30 amDCA-LHR
30h 40m1 stop
$666United Airlines
Find Deal
Fri, Feb 21 - Sat, Feb 22
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
5:10 pm - 11:25 amIAD-LHR
13h 15m1 stop
$673Aer Lingus
Find Deal
Fri, Jan 17 - Fri, Jan 31
8:55 am - 9:12 pmLHR-BWI
17h 17m2 stops
5:37 pm - 11:15 amBWI-LHR
13h 38m1 stop
$760United Airlines
Find Deal
Mon, Mar 3 - Mon, Mar 10
8:40 pm - 5:00 pmLHR-BWI
25h 20m1 stop
Tue, Feb 25
3:15 pm - 9:59 amLHR-BWI
47h 44m2 stops
Wed, Jan 29
8:40 pm - 6:25 pmLHR-IAD
26h 45m1 stop
$489Icelandair
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Sat, Feb 1
7:50 am - 3:40 pmLHR-IAD
12h 50m1 stop
$490Aer Lingus
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Wed, Jan 15
12:15 pm - 6:30 pmLHR-BWI
11h 15m1 stop
$490Icelandair
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Tue, Feb 4
8:45 pm - 3:40 pmLHR-IAD
23h 55m1 stop
$498Aer Lingus
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Sun, Jan 26
12:10 pm - 3:35 pmLHR-IAD
8h 25mnonstop
$630British Airways
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Wed, Jan 15
9:10 am - 6:04 pmLHR-DCA
13h 54m1 stop
$694Virgin Atlantic
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Fri, Jan 10
4:30 pm - 7:45 pmLHR-IAD
8h 15mnonstop
$703British Airways
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Mon, Feb 24
8:50 am - 8:08 pmLHR-DCA
16h 18m1 stop
$714Virgin Atlantic
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Fri, Dec 27
7:45 am - 5:00 pmLHR-BWI
38h 15m2 stops
7:30 pm - 10:50 amBWI-LHR
10h 20m1 stop
Mon, Dec 23 - Thu, Jan 9
8:10 pm - 5:00 pmLHR-BWI
49h 50m2 stops
7:30 pm - 10:50 amBWI-LHR
10h 20m1 stop
Mon, Dec 23 - Fri, Jan 10
2:30 pm - 9:46 amLHR-IAD
24h 16m1 stop
8:45 am - 8:25 amIAD-LHR
18h 40m1 stop
$1,082Lufthansa
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Sat, Dec 21 - Wed, Jan 1
2:30 pm - 1:51 pmLHR-IAD
28h 21m1 stop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$1,185Lufthansa
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Sat, Dec 21 - Sat, Dec 28
1:45 pm - 4:25 pmLHR-IAD
31h 40m1 stop
5:37 pm - 9:10 amIAD-LHR
10h 33m1 stop
$1,304United Airlines
Find Deal
Mon, Dec 23 - Mon, Dec 30
12:05 pm - 3:30 pmLHR-IAD
32h 25m1 stop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$1,308United Airlines
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Mon, Dec 23 - Mon, Dec 30
5:35 pm - 11:02 pmLHR-IAD
34h 27m2 stops
12:59 pm - 12:40 pmIAD-LHR
18h 41m2 stops
$1,341Delta
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Mon, Dec 23 - Mon, Dec 30
5:35 pm - 6:13 pmLHR-BWI
29h 38m2 stops
2:07 pm - 12:40 pmBWI-LHR
17h 33m2 stops
$1,341Delta
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Mon, Dec 23 - Mon, Dec 30
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
2:11 pm - 9:15 amBWI-LHR
14h 04m1 stop
$1,572British Airways
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Fri, Dec 20 - Tue, Dec 24
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$1,586British Airways
Find Deal
Sun, Dec 22 - Fri, Jan 10
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$627British Airways
Find Deal
Mon, Jan 13 - Mon, Jan 20
4:35 pm - 7:35 pmLHR-BWI
8h 00mnonstop
9:20 pm - 9:35 amBWI-LHR
7h 15mnonstop
$631British Airways
Find Deal
Wed, Apr 30 - Mon, May 19
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$660American Airlines
Find Deal
Mon, Jan 13 - Mon, Jan 20
4:20 pm - 7:55 pmLHR-IAD
8h 35mnonstop
7:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$733Lufthansa
Find Deal
Mon, Mar 3 - Mon, Mar 10
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
10:15 pm - 10:50 amIAD-LHR
7h 35mnonstop
$757Lufthansa
Find Deal
Mon, Jan 20 - Mon, Jan 27
12:05 pm - 3:40 pmLHR-IAD
8h 35mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$827United Airlines
Find Deal
Wed, Jan 22 - Fri, Jan 31
3:25 pm - 6:45 pmLHR-BWI
8h 20mnonstop
8:30 pm - 8:40 amBWI-LHR
7h 10mnonstop
$840American Airlines
Find Deal
Mon, Jan 13 - Wed, Jan 22
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$860Delta
Find Deal
Tue, Dec 31 - Wed, Jan 22
12:25 pm - 4:05 pmLHR-IAD
8h 40mnonstop
6:45 pm - 7:15 amIAD-LHR
7h 30mnonstop
$887Delta
Find Deal
Fri, Jan 10 - Fri, Jan 24
4:20 pm - 8:15 pmLHR-IAD
8h 55mnonstop
6:25 pm - 6:40 amIAD-LHR
7h 15mnonstop
$1,081United Airlines
Find Deal
Tue, Jan 7 - Tue, Jan 14

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
Jan 16
LHR12:05 pmLondon Heathrow
33h 20m
1 stop
IAD4:25 pmWashington, D.C. Dulles Intl
Jan 18
IAD12:45 pmWashington, D.C. Dulles Intl
26h 50m
1 stop
LHR8:35 pmLondon Heathrow
Lufthansa
Jan 18
LHR6:00 pmLondon Heathrow
19h 57m
1 stop
DCA8:57 amWashington, D.C. Reagan-National
Jan 21
DCA6:00 pmWashington, D.C. Reagan-National
10h 10m
1 stop
LHR9:10 amLondon Heathrow
Lufthansa
Jan 18
LHR6:00 pmLondon Heathrow
20h 46m
1 stop
IAD9:46 amWashington, D.C. Dulles Intl
Jan 21
IAD6:05 amWashington, D.C. Dulles Intl
9h 30m
1 stop
LHR8:35 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
Jan 16
LHR12:05 pmLondon Heathrow
8h 35m
IAD3:40 pmWashington, D.C. Dulles Intl
Jan 18
IAD6:00 pmWashington, D.C. Dulles Intl
32h 25m
1 stop
LHR7:25 amLondon Heathrow
Austrian Airlines
Dec 28
LHR6:00 amLondon Heathrow
13h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Dec 28
IAD5:50 pmWashington, D.C. Dulles Intl
32h 35m
1 stop
LHR7:25 amLondon Heathrow
Austrian Airlines
Dec 28
LHR12:05 pmLondon Heathrow
8h 35m
IAD3:40 pmWashington, D.C. Dulles Intl
Dec 28
IAD5:50 pmWashington, D.C. Dulles Intl
32h 35m
1 stop
LHR7:25 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 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 $592. If you’re not able to fly to Washington, D.C. in February, then January is your next best option. Flight prices from London Heathrow Airport to Washington, D.C. during January average around $627.

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 $723. 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 $805.

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 $686. 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 $921. 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 60 days in advance when prices tend to average $815. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $717.

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 60% 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 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

$306

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 $306. The best round-trip flight deal from London Heathrow Airport to Washington, D.C. found on momondo in the last 72 hours is $446.
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 distance between London Heathrow and Washington, D.C. is about 3649.4 mi. A reasonable flight in good conditions will take 7h 56m.

  • 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 $348Free CancellationRating
7.1
91 reviews
Search PLAY flights
DeltaPriceFrom $444Free CancellationRating
8.0
8,604 reviews
Search Delta flights
Aer LingusPriceFrom $511Free CancellationRating
7.1
1,073 reviews
Search Aer Lingus flights
Scandinavian AirlinesPriceFrom $527Free CancellationRating
7.3
1,309 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $529Free CancellationRating
7.1
510 reviews
Search Icelandair flights
IberiaPriceFrom $588Free CancellationRating
7.0
2,656 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $599Free CancellationRating
7.5
668 reviews
Search Virgin Atlantic flights
Austrian AirlinesPriceFrom $608Free CancellationRating
7.6
787 reviews
Search Austrian Airlines flights
American AirlinesPriceFrom $619Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $619Free CancellationRating
6.6
6,820 reviews
Search British Airways flights
  • Delta Flights From London Heathrow Airport to Washington, D.C.

    Delta flies from London Heathrow Airport to Washington, D.C. around 2 times per week, with 8,604 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 $444 (round-trip), much lower than the average airfare cost of $936 for Delta flights on this route.

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

    Across 787 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.