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Cheap flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from £192

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. Dulles Intl Airport departing on 14/3. 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.
07:30 - 18:00LHR-IAD
14h 30m1 stop
19:10 - 14:55IAD-LHR
15h 45m1 stop
Wed, 12 Mar - Sat, 15 Mar
18:30 - 14:30LHR-IAD
25h 00m1 stop
17:30 - 22:40IAD-LHR
24h 10m1 stop
£390TAP AIR PORTUGAL
Find Deal
Mon, 17 Feb - Sat, 22 Feb
06:00 - 15:00LHR-IAD
14h 00m1 stop
17:30 - 21:35IAD-LHR
23h 05m1 stop
£393TAP AIR PORTUGAL
Find Deal
Sat, 25 Jan - Sat, 8 Feb
06:00 - 15:00LHR-IAD
14h 00m1 stop
17:30 - 11:25IAD-LHR
12h 55m1 stop
£395TAP AIR PORTUGAL
Find Deal
Thu, 30 Jan - Sat, 8 Feb
18:00 - 09:46LHR-IAD
20h 46m1 stop
18:25 - 06:40IAD-LHR
7h 15mdirect
£487Lufthansa
Find Deal
Sat, 25 Jan - Sat, 8 Feb
14:30 - 08:05LHR-IAD
21h 35m1 stop
08:35 - 06:20IAD-LHR
17h 45m1 stop
£488Lufthansa
Find Deal
Sat, 15 Mar - Sun, 23 Mar
08:50 - 15:40LHR-IAD
11h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£523Aer Lingus
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Thu, 5 Dec - Mon, 9 Dec
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 09:05IAD-LHR
10h 55m1 stop
£529Aer Lingus
Find Deal
Wed, 4 Dec - Wed, 11 Dec
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£584Virgin Atlantic
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Wed, 15 Jan - Wed, 22 Jan
16:30 - 20:45LHR-IAD
8h 15mdirect
17:55 - 06:15IAD-LHR
7h 20mdirect
£586British Airways
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Wed, 12 Mar - Wed, 7 May
20:40 - 18:00LHR-IAD
25h 20m1 stop
Fri, 14 Mar
21:00 - 18:00LHR-IAD
25h 00m2 stops
Fri, 14 Mar
07:35 - 17:00LHR-IAD
14h 25m1 stop
Mon, 3 Mar
06:25 - 17:00LHR-IAD
39h 35m2 stops
Tue, 4 Mar
20:40 - 18:25LHR-IAD
26h 45m1 stop
£389Icelandair
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Wed, 22 Jan
12:15 - 18:25LHR-IAD
11h 10m1 stop
£406Icelandair
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Sat, 25 Jan
08:40 - 15:45LHR-IAD
12h 05m1 stop
£440Virgin Atlantic
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Mon, 25 Nov
08:50 - 15:40LHR-IAD
11h 50m1 stop
£441Aer Lingus
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Wed, 11 Dec
08:50 - 15:40LHR-IAD
11h 50m1 stop
£444Aer Lingus
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Mon, 9 Dec
19:30 - 15:40LHR-IAD
25h 10m1 stop
£539Scandinavian Airlines
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Tue, 24 Dec
20:40 - 18:25LHR-IAD
26h 45m1 stop
19:40 - 19:30IAD-LHR
18h 50m1 stop
£505Icelandair
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Tue, 26 Nov - Tue, 10 Dec
20:40 - 18:25LHR-IAD
26h 45m1 stop
19:40 - 19:30IAD-LHR
18h 50m1 stop
£512Icelandair
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Tue, 26 Nov - Tue, 3 Dec
20:40 - 18:25LHR-IAD
26h 45m1 stop
19:40 - 19:30IAD-LHR
18h 50m1 stop
£516Icelandair
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Tue, 26 Nov - Tue, 3 Dec
07:50 - 15:40LHR-IAD
12h 50m1 stop
21:15 - 11:25IAD-LHR
9h 10m1 stop
£560Aer Lingus
Find Deal
Sun, 24 Nov - Tue, 26 Nov
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£564Aer Lingus
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Sun, 24 Nov - Sun, 1 Dec
12:05 - 15:40LHR-IAD
8h 35mdirect
17:56 - 07:10IAD-LHR
32h 14m1 stop
£595Lufthansa
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Fri, 22 Nov - Sat, 7 Dec
16:00 - 22:48LHR-IAD
11h 48m1 stop
17:56 - 07:10IAD-LHR
32h 14m1 stop
£600Lufthansa
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Fri, 22 Nov - Sat, 7 Dec
06:30 - 15:45LHR-IAD
14h 15m1 stop
18:45 - 07:15IAD-LHR
7h 30mdirect
£789Virgin Atlantic
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Sun, 24 Nov - Mon, 13 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£796Virgin Atlantic
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Sun, 24 Nov - Mon, 13 Jan
14:10 - 23:58LHR-IAD
14h 48m2 stops
10:59 - 06:15IAD-LHR
14h 16m2 stops
£902Finnair
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Sat, 23 Nov - Tue, 26 Nov
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
Mon, 13 Jan - Tue, 21 Jan
12:25 - 17:05LHR-IAD
8h 40mdirect
21:50 - 10:05IAD-LHR
7h 15mdirect
£564Delta
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Mon, 24 Mar - Wed, 2 Apr
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£584Virgin Atlantic
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Wed, 15 Jan - Wed, 22 Jan
16:20 - 20:15LHR-IAD
8h 55mdirect
22:15 - 10:50IAD-LHR
7h 35mdirect
£605Lufthansa
Find Deal
Fri, 31 Jan - Mon, 3 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£611British Airways
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Mon, 27 Jan - Thu, 6 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£616British Airways
Find Deal
Wed, 8 Jan - Wed, 29 Jan
16:20 - 20:15LHR-IAD
8h 55mdirect
18:25 - 06:40IAD-LHR
7h 15mdirect
£618Lufthansa
Find Deal
Mon, 13 Jan - Mon, 20 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£628Finnair
Find Deal
Mon, 27 Jan - Tue, 11 Feb
12:25 - 17:05LHR-IAD
8h 40mdirect
22:00 - 10:30IAD-LHR
7h 30mdirect
£628Virgin Atlantic
Find Deal
Tue, 25 Mar - Sat, 29 Mar
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£657Finnair
Find Deal
Sun, 12 Jan - Mon, 27 Jan

Delta flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport

Our best Delta deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
Delta
19 Feb
LHR06:30London Heathrow
14h 15m
1 stop
IAD15:45Washington, D.C. Dulles Intl
24 Feb
IAD18:45Washington, D.C. Dulles Intl
7h 30m
LHR07:15London Heathrow
Delta
13 Jan
LHR06:20London Heathrow
14h 55m
1 stop
IAD16:15Washington, D.C. Dulles Intl
21 Jan
IAD18:25Washington, D.C. Dulles Intl
7h 30m
LHR06:55London Heathrow
Delta
13 Jan
LHR09:00London Heathrow
12h 15m
1 stop
IAD16:15Washington, D.C. Dulles Intl
21 Jan
IAD18:25Washington, D.C. Dulles Intl
7h 30m
LHR06:55London Heathrow

Icelandair flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport

Our best Icelandair deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
13 Jan
LHR12:15London Heathrow
11h 10m
1 stop
IAD18:25Washington, D.C. Dulles Intl
20 Jan
IAD19:40Washington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50London Heathrow
Icelandair
17 Jan
LHR12:15London Heathrow
11h 10m
1 stop
IAD18:25Washington, D.C. Dulles Intl
25 Jan
IAD19:40Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR19:30London Heathrow
Icelandair
8 Jan
LHR20:40London Heathrow
26h 45m
1 stop
IAD18:25Washington, D.C. Dulles Intl
15 Jan
IAD19:40Washington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50London Heathrow

See travel insights to Washington, D.C. from

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

January. The cheapest time of year to fly to Washington, D.C. Dulles Intl Airport from London Heathrow Airport is January. The most expensive is August.

What is the cheapest day to depart London Heathrow Airport for Washington, D.C. Dulles Intl Airport?

Tuesday. The cheapest day of the week is usually Tuesday. The most expensive is usually Sunday.

When is the cheapest time to fly from London Heathrow Airport to Washington, D.C. Dulles Intl Airport?

In the evening. London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights are approximately 21% more expensive in the afternoon than in the evening

How far in advance should you book London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights?

60 days before. The cheapest time to buy a flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport is approximately 60 days to departure

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

There are 2 cabin classes available to choose from on London Heathrow Airport to Washington, D.C. Dulles Intl 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 London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 66% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight.

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

As of November 2024, prices for London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights are approximately 7% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (LHR to IAD) flight deals and tips

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

Best price found

£192

Fastest flight time

8h 15m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in the past 72 hours is £192. The best return flight deal from London Heathrow Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £383.
The fastest flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport takes 8h 15m
Direct flights go from London Heathrow Airport to Washington, D.C. Dulles Intl Airport every day.

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

    London Heathrow and Washington, D.C. Dulles Intl are 3664.4 mi apart from one another. 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. Dulles Intl Airport?

    Prices for flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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. Dulles Intl Airport.

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

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek 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. Dulles Intl Airport?

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


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

Compare and see reviews for airlines that fly from London Heathrow Airport to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom £283Free CancellationRating
7.1
88 reviews
Search PLAY flights
DeltaPriceFrom £338Free CancellationRating
8.0
8,756 reviews
Search Delta flights
IcelandairPriceFrom £393Free CancellationRating
7.2
555 reviews
Search Icelandair flights
Brussels AirlinesPriceFrom £404Free CancellationRating
7.4
367 reviews
Search Brussels Airlines flights
Scandinavian AirlinesPriceFrom £416Free CancellationRating
7.3
1,301 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £418Free CancellationRating
7.1
1,892 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom £419Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air CanadaPriceFrom £432Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights
British AirwaysPriceFrom £448Free CancellationRating
6.6
6,837 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £448Free CancellationRating
7.5
663 reviews
Search Virgin Atlantic flights
  • Delta Flights From London Heathrow Airport to Washington, D.C. Dulles Intl Airport

    Delta flies from London Heathrow Airport to Washington, D.C. Dulles Intl Airport around 3 times per week, with 8,756 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Washington, D.C. Dulles Intl Airport in the last 72 hours was £428 (round-trip), much lower than the average airfare cost of £840 for Delta flights on this route.

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

    The best KLM deal for London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets found on momondo in the last 72 hours was £662, round-trip. It should be noted that an average KLM flight deal for this route in this time was higher, at £901 round-trip. KLM operates 3 flights out of London Heathrow Airport into Washington, D.C. Dulles Intl Airport in an average week, so prices vary by time and availability. 1,350 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.?

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?

momondo does allow users to show only those flights to Washington, D.C. from London which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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