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Cheap flights from London Heathrow Airport to Washington, D.C. from €510

This is the cheapest return 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 24/4. 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 return train or bus tickets from London Heathrow Airport to Washington, D.C..

All return flight deals from London Heathrow Airport to Washington, D.C.

The cheapest plane tickets from London Heathrow Airport to Washington, D.C. found on KAYAK recently.
06:00 - 15:20LHR-IAD
14h 20m1 stop
22:20 - 22:00IAD-LHR
18h 40m1 stop
€510TAP AIR PORTUGAL
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Thu, 24 Apr - Sun, 27 Apr
12:15 - 18:25LHR-IAD
11h 10m1 stop
19:40 - 10:50IAD-LHR
10h 10m1 stop
€527Icelandair
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Sat, 22 Feb - Thu, 27 Feb
08:55 - 17:25LHR-IAD
12h 30m1 stop
19:25 - 06:40IAD-LHR
7h 15mdirect
€571United Airlines
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Tue, 18 Mar - Wed, 26 Mar
08:55 - 17:25LHR-IAD
12h 30m1 stop
19:25 - 06:40IAD-LHR
7h 15mdirect
€572United Airlines
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Tue, 18 Mar - Mon, 24 Mar
20:05 - 15:30LHR-IAD
23h 25m1 stop
20:45 - 13:00IAD-LHR
11h 15m1 stop
€573SWISS
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Mon, 17 Mar - Mon, 31 Mar
06:00 - 14:35LHR-IAD
13h 35m1 stop
22:15 - 10:40IAD-LHR
7h 25mdirect
€575Austrian Airlines
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Tue, 11 Feb - Tue, 8 Apr
13:30 - 20:20LHR-IAD
11h 50m1 stop
18:25 - 06:40IAD-LHR
7h 15mdirect
€577Lufthansa
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Wed, 12 Feb - Wed, 19 Feb
14:50 - 14:35LHR-IAD
28h 45m1 stop
17:25 - 07:55IAD-LHR
33h 30m1 stop
€581Austrian Airlines
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Mon, 10 Feb - Sun, 16 Feb
13:30 - 21:20LHR-IAD
11h 50m1 stop
23:20 - 15:50IAD-LHR
12h 30m1 stop
€582Lufthansa
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Tue, 18 Mar - Wed, 26 Mar
20:05 - 15:30LHR-IAD
24h 25m1 stop
22:05 - 08:05IAD-LHR
29h 00m2 stops
€597SWISS
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Mon, 17 Feb - Mon, 24 Feb
14:50 - 23:36LHR-IAD
37h 46m2 stops
€541WestJet
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Mon, 10 Feb
13:40 - 14:00LHR-IAD
28h 20m1 stop
€620TAP AIR PORTUGAL
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Sun, 16 Mar
21:25 - 19:20LHR-IAD
26h 55m1 stop
€637Icelandair
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Mon, 21 Apr
12:15 - 19:30LHR-BWI
11h 15m1 stop
€640Icelandair
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Mon, 17 Mar
10:20 - 19:25LHR-BWI
14h 05m2 stops
€914
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Fri, 4 Apr
10:20 - 19:25LHR-BWI
14h 05m2 stops
€1,236
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Mon, 9 Jun
06:30 - 19:19LHR-IAD
16h 49m2 stops
€1,353Delta
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Mon, 17 Mar
06:30 - 18:56LHR-BWI
16h 26m2 stops
€1,353Delta
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Mon, 17 Mar
09:30 - 21:15LHR-IAD
16h 45m2 stops
€1,363United Airlines
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Mon, 21 Apr
08:30 - 21:42LHR-BWI
18h 12m2 stops
€1,369United Airlines
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Mon, 21 Apr
07:10 - 14:35LHR-IAD
12h 25m1 stop
15:55 - 07:10IAD-LHR
10h 15m1 stop
€652United Airlines
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Fri, 24 Jan - Fri, 31 Jan
18:40 - 15:40LHR-IAD
26h 00m1 stop
17:10 - 09:20IAD-LHR
11h 10m1 stop
€661Scandinavian Airlines
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Fri, 24 Jan - Sat, 15 Feb
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
€663Delta
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Fri, 24 Jan - Fri, 31 Jan
12:15 - 18:25LHR-IAD
11h 10m1 stop
19:40 - 10:50IAD-LHR
10h 10m1 stop
€682Icelandair
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Wed, 22 Jan - Mon, 27 Jan
12:15 - 18:30LHR-BWI
11h 15m1 stop
19:30 - 19:30BWI-LHR
19h 00m1 stop
€694Icelandair
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Wed, 22 Jan - Mon, 27 Jan
06:30 - 15:45LHR-IAD
14h 15m1 stop
18:45 - 07:15IAD-LHR
7h 30mdirect
€912Delta
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Fri, 24 Jan - Fri, 31 Jan
18:30 - 21:00LHR-IAD
31h 30m1 stop
22:30 - 22:40IAD-LHR
19h 10m1 stop
€1,004TAP AIR PORTUGAL
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Tue, 21 Jan - Fri, 24 Jan
06:00 - 22:20LHR-IAD
21h 20m2 stops
22:30 - 17:30IAD-LHR
14h 00m1 stop
€1,008TAP AIR PORTUGAL
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Tue, 21 Jan - Sun, 26 Jan
12:15 - 18:25LHR-IAD
11h 10m1 stop
19:40 - 14:35IAD-LHR
13h 55m2 stops
€1,014
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Wed, 22 Jan - Sat, 25 Jan
12:15 - 18:25LHR-IAD
11h 10m1 stop
19:40 - 14:35IAD-LHR
13h 55m2 stops
€1,069
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Wed, 22 Jan - Sat, 25 Jan
12:25 - 17:05LHR-IAD
8h 40mdirect
21:40 - 09:10IAD-LHR
7h 30mdirect
€591Delta
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Mon, 17 Mar - Thu, 27 Mar
15:25 - 19:45LHR-BWI
8h 20mdirect
21:30 - 08:40BWI-LHR
7h 10mdirect
€591British Airways
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Mon, 17 Mar - Thu, 27 Mar
12:05 - 15:45LHR-IAD
8h 40mdirect
23:50 - 11:05IAD-LHR
7h 15mdirect
€603United Airlines
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Wed, 5 Mar - Wed, 12 Mar
12:05 - 15:40LHR-IAD
8h 35mdirect
22:35 - 10:50IAD-LHR
7h 15mdirect
€604Lufthansa
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Mon, 10 Feb - Tue, 18 Feb
12:05 - 15:45LHR-IAD
8h 40mdirect
19:25 - 06:40IAD-LHR
7h 15mdirect
€606Austrian Airlines
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Tue, 4 Mar - Tue, 11 Mar
15:25 - 18:45LHR-BWI
8h 20mdirect
22:25 - 10:35BWI-LHR
7h 10mdirect
€615Finnair
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Mon, 3 Feb - Tue, 11 Feb
12:05 - 16:40LHR-IAD
8h 35mdirect
19:25 - 06:40IAD-LHR
7h 15mdirect
€639United Airlines
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Sun, 16 Mar - Tue, 25 Mar
12:05 - 15:40LHR-IAD
8h 35mdirect
18:25 - 06:40IAD-LHR
7h 15mdirect
€640Lufthansa
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Sat, 8 Feb - Wed, 19 Feb
15:25 - 18:45LHR-BWI
8h 20mdirect
20:30 - 08:40BWI-LHR
7h 10mdirect
€650Finnair
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Fri, 31 Jan - Mon, 3 Feb
12:15 - 15:25LHR-IAD
8h 10mdirect
18:35 - 06:55IAD-LHR
7h 20mdirect
€668Austrian Airlines
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Mon, 12 May - Mon, 2 Jun

British Airways flights from London Heathrow Airport to Washington, D.C.

Our best British Airways deals on London Heathrow Airport to Washington, D.C. flight tickets
British Airways
17 Mar
LHR15:25London Heathrow
8h 20m
BWI19:45Baltimore/Washington
27 Mar
BWI21:30Baltimore/Washington
7h 10m
LHR08:40London Heathrow
British Airways
11 Feb
LHR13:35London Heathrow
8h 20m
BWI16:55Baltimore/Washington
24 Feb
BWI20:30Baltimore/Washington
7h 10m
LHR08:40London Heathrow
British Airways
29 Jan
LHR16:30London Heathrow
8h 15m
IAD19:45Washington, D.C. Dulles Intl
13 Feb
IAD21:55Washington, D.C. Dulles Intl
7h 10m
LHR10:05London Heathrow

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

Our best Iberia deals on London Heathrow Airport to Washington, D.C. flight tickets
Iberia
27 Jan
LHR15:25London Heathrow
8h 20m
BWI18:45Baltimore/Washington
3 Feb
BWI20:30Baltimore/Washington
7h 10m
LHR08:40London Heathrow
Iberia
1 Jul
LHR16:35London Heathrow
8h 00m
BWI19:35Baltimore/Washington
15 Jul
BWI21:20Baltimore/Washington
7h 15m
LHR09:35London 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 €636, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Washington, D.C. from London Heathrow Airport during January instead. Flights to Washington, D.C. in January, while not as cheap as those in February, still average around €664.

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

You are more likely to see cheaper flights to Washington, D.C. from London Heathrow Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €848 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Heathrow Airport for as low as €742 on momondo.

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

As of January 2025, prices for London Heathrow Airport to Washington, D.C. flights are approximately 42% 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 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

€541

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from London Heathrow Airport in the past 72 hours is €541. The best return flight deal from London Heathrow Airport to Washington, D.C. found on momondo in the last 72 hours is €510.
The fastest flight from London Heathrow Airport to Washington, D.C. takes 8h 00m
Direct flights go from London Heathrow Airport to Washington, D.C. every day.
There are 2 airports near Washington, D.C.: Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

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

    Washington, D.C. is 5873.1 km away from London Heathrow. A reasonable flight in good conditions will take 8h 00m.

  • 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 refreshed on a daily basis.

  • 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 stopovers. 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 licence, 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.?


Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Gettysburg

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.

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?

If you are not ready to book a flight from London to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they 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 36.1 km from Washington, D.C.