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Cheap flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport from £300

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 25/2. 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.
20:50 - 15:00LHR-IAD
23h 10m2 stops
19:15 - 20:05IAD-LHR
19h 50m2 stops
Wed, 22 Jan - Mon, 27 Jan
12:05 - 16:25LHR-IAD
33h 20m1 stop
12:45 - 20:35IAD-LHR
26h 50m1 stop
£460Lufthansa
Find Deal
Thu, 16 Jan - Sat, 18 Jan
06:00 - 14:35LHR-IAD
13h 35m1 stop
17:50 - 09:45IAD-LHR
10h 55m1 stop
Tue, 14 Jan - Mon, 27 Jan
20:25 - 15:45LHR-IAD
24h 20m1 stop
20:40 - 09:10IAD-LHR
7h 30mdirect
£484Virgin Atlantic
Find Deal
Mon, 27 Jan - Thu, 20 Feb
12:15 - 18:25LHR-IAD
11h 10m1 stop
19:40 - 10:50IAD-LHR
10h 10m1 stop
£487Icelandair
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Mon, 27 Jan - Mon, 10 Feb
15:45 - 15:45LHR-IAD
29h 00m1 stop
18:45 - 07:15IAD-LHR
7h 30mdirect
£490Virgin Atlantic
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Mon, 3 Feb - Mon, 10 Feb
20:40 - 18:25LHR-IAD
26h 45m1 stop
19:40 - 10:50IAD-LHR
10h 10m1 stop
£493Icelandair
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Wed, 22 Jan - Mon, 27 Jan
12:10 - 15:35LHR-IAD
8h 25mdirect
18:00 - 06:15IAD-LHR
7h 15mdirect
£495British Airways
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Mon, 13 Jan - Mon, 20 Jan
12:10 - 15:35LHR-IAD
8h 25mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£495British Airways
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Tue, 14 Jan - Mon, 27 Jan
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 11:25IAD-LHR
13h 15m1 stop
£531Aer Lingus
Find Deal
Fri, 17 Jan - Fri, 31 Jan
19:05 - 18:40LHR-IAD
28h 35m2 stops
Tue, 25 Feb
20:00 - 19:05LHR-IAD
28h 05m2 stops
Sat, 10 May
07:50 - 15:40LHR-IAD
12h 50m1 stop
£386Aer Lingus
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Wed, 15 Jan
20:45 - 15:40LHR-IAD
23h 55m1 stop
£393Aer Lingus
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Sun, 26 Jan
12:10 - 15:35LHR-IAD
8h 25mdirect
£497British Airways
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Wed, 15 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
£525British Airways
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Sun, 16 Feb
11:30 - 19:25LHR-IAD
12h 55m1 stop
£562Virgin Atlantic
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Sun, 29 Dec
16:20 - 19:55LHR-IAD
8h 35mdirect
£623Lufthansa
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Mon, 17 Feb
16:20 - 20:15LHR-IAD
8h 55mdirect
£625Lufthansa
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Mon, 27 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
£627Virgin Atlantic
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Sun, 29 Dec
18:40 - 15:40LHR-IAD
26h 00m1 stop
17:10 - 18:30IAD-LHR
20h 20m1 stop
£622Scandinavian Airlines
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Tue, 24 Dec - Sat, 11 Jan
19:30 - 15:40LHR-IAD
25h 10m1 stop
17:10 - 16:25IAD-LHR
18h 15m2 stops
£657Scandinavian Airlines
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Tue, 24 Dec - Sat, 11 Jan
06:40 - 15:40LHR-IAD
14h 00m1 stop
17:10 - 17:40IAD-LHR
19h 30m1 stop
£696Scandinavian Airlines
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Mon, 23 Dec - Mon, 30 Dec
06:40 - 15:40LHR-IAD
14h 00m1 stop
17:10 - 14:35IAD-LHR
16h 25m2 stops
£714Scandinavian Airlines
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Mon, 23 Dec - Wed, 8 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
21:00 - 09:30IAD-LHR
7h 30mdirect
£936Virgin Atlantic
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Tue, 24 Dec - Sat, 11 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£1,070Virgin Atlantic
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Mon, 23 Dec - Mon, 30 Dec
17:45 - 15:40LHR-IAD
26h 55m1 stop
17:10 - 09:05IAD-LHR
10h 55m1 stop
£1,132Aer Lingus
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Sun, 22 Dec - Sun, 29 Dec
13:45 - 15:30LHR-IAD
30h 45m1 stop
18:25 - 06:40IAD-LHR
7h 15mdirect
£1,159Lufthansa
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Sun, 22 Dec - Mon, 30 Dec
13:45 - 15:30LHR-IAD
30h 45m1 stop
18:25 - 06:40IAD-LHR
7h 15mdirect
£1,189Lufthansa
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Sun, 22 Dec - Sun, 29 Dec
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£1,225British Airways
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Fri, 20 Dec - Thu, 26 Dec
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£481British Airways
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Mon, 13 Jan - Mon, 20 Jan
16:30 - 19:45LHR-IAD
8h 15mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£486British Airways
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Wed, 15 Jan - Wed, 22 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
20:40 - 09:10IAD-LHR
7h 30mdirect
£498Virgin Atlantic
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Mon, 27 Jan - Thu, 20 Feb
12:05 - 15:40LHR-IAD
8h 35mdirect
22:30 - 11:05IAD-LHR
7h 35mdirect
£499Austrian Airlines
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Wed, 15 Jan - Wed, 22 Jan
16:20 - 20:15LHR-IAD
8h 55mdirect
22:15 - 10:50IAD-LHR
7h 35mdirect
£501Austrian Airlines
Find Deal
Mon, 13 Jan - Mon, 20 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£507Virgin Atlantic
Find Deal
Mon, 3 Feb - Mon, 10 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
22:40 - 11:05IAD-LHR
7h 25mdirect
£513Finnair
Find Deal
Tue, 28 Jan - Wed, 9 Apr
16:30 - 19:45LHR-IAD
8h 15mdirect
22:40 - 11:05IAD-LHR
7h 25mdirect
£514Finnair
Find Deal
Mon, 20 Jan - Thu, 15 May
16:20 - 20:15LHR-IAD
8h 55mdirect
22:15 - 10:50IAD-LHR
7h 35mdirect
£599Lufthansa
Find Deal
Mon, 27 Jan - Mon, 3 Feb
12:05 - 15:45LHR-IAD
8h 40mdirect
19:25 - 06:40IAD-LHR
7h 15mdirect
£622Lufthansa
Find Deal
Sun, 16 Feb - Mon, 17 Mar

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

Our best Lufthansa deals on London Heathrow Airport to Washington, D.C. Dulles Intl Airport flight tickets
Lufthansa
16 Jan
LHR12:05London Heathrow
33h 20m
1 stop
IAD16:25Washington, D.C. Dulles Intl
18 Jan
IAD12:45Washington, D.C. Dulles Intl
26h 50m
1 stop
LHR20:35London Heathrow
Lufthansa
28 Jan
LHR06:30London Heathrow
14h 20m
1 stop
IAD15:50Washington, D.C. Dulles Intl
1 Feb
IAD17:17Washington, D.C. Dulles Intl
32h 13m
1 stop
LHR06:30London Heathrow
Lufthansa
8 Feb
LHR18:00London Heathrow
20h 46m
1 stop
IAD09:46Washington, D.C. Dulles Intl
15 Feb
IAD22:35Washington, D.C. Dulles Intl
7h 15m
LHR10:50London 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
27 Jan
LHR12:15London Heathrow
11h 10m
1 stop
IAD18:25Washington, D.C. Dulles Intl
10 Feb
IAD19:40Washington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50London Heathrow
Icelandair
22 Jan
LHR20:40London Heathrow
26h 45m
1 stop
IAD18:25Washington, D.C. Dulles Intl
27 Jan
IAD19:40Washington, D.C. Dulles Intl
10h 10m
1 stop
LHR10:50London Heathrow
Icelandair
16 Jan
LHR12:15London Heathrow
11h 10m
1 stop
IAD18:25Washington, D.C. Dulles Intl
19 Jan
IAD19:40Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR19:30London 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 to Washington, D.C. Dulles Intl Airport?

The month of April is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from London Heathrow Airport, with most prices found around £545. If you aren’t able to travel during the month of April, then book flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport during January instead. Flights to Washington, D.C. Dulles Intl Airport in January, while not as cheap as those in April, still average around £555.

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

According to our data, Tuesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from London Heathrow Airport. The lowest ticket price found for a Tuesday departure recently was £612. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Sunday 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 £694.

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

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is in the evening when flights can be purchased for as low as £559. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the afternoon when prices are around £694.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport when booking 60 days ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around £643 when searching 60 days out. Keep in mind that you might be able to find cheaper flights to Washington, D.C. Dulles Intl Airport 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. Dulles Intl flights?

There are 4 cabin classes available to choose from on London Heathrow to Washington, D.C. Dulles Intl 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 39% 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 December 2024, prices for London Heathrow Airport to Washington, D.C. Dulles Intl Airport flights are approximately 20% 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

£300

Fastest flight time

7h 56m

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 £300. 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 £448.
The fastest flight from London Heathrow Airport to Washington, D.C. Dulles Intl Airport takes 7h 56m
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 7h 56m.

  • 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 £281Free CancellationRating
7.1
91 reviews
Search PLAY flights
DeltaPriceFrom £338Free CancellationRating
8.0
8,600 reviews
Search Delta flights
IcelandairPriceFrom £395Free CancellationRating
7.1
509 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
1,078 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £457Free CancellationRating
6.6
6,817 reviews
Search British Airways 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 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. Dulles Intl Airport 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. 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 £685, round-trip. It should be noted that an average KLM flight deal for this route in this time was higher, at £890 round-trip. KLM operates 1 flight out of London Heathrow Airport into Washington, D.C. Dulles Intl Airport 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.?

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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