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Cheap flights from London to Washington, D.C. Dulles Intl Airport from £271

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 to Washington, D.C. Dulles Intl Airport departing on 6/5. 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 to Washington, D.C.

Cheap return flights

These are some of the best return flight deals from London 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 to Washington, D.C..

Cheap last-minute flights

Planning a quick getaway from London 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 to Washington, D.C.

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

The cheapest plane tickets from London to Washington, D.C. found on KAYAK recently.
08:15 - 19:25STN-IAD
15h 10m2 stops
20:40 - 12:50IAD-STN
12h 10m2 stops
Mon, 10 Mar - Sun, 16 Mar
22:30 - 18:25LGW-IAD
24h 55m2 stops
20:40 - 21:00IAD-LGW
20h 20m2 stops
Sat, 1 Mar - Mon, 10 Mar
11:55 - 18:25LGW-IAD
11h 30m1 stop
20:30 - 14:40IAD-LGW
13h 10m1 stop
£358Icelandair
Find Deal
Tue, 4 Mar - Fri, 9 May
07:40 - 16:30LHR-IAD
12h 50m1 stop
17:25 - 12:20IAD-LHR
13h 55m1 stop
£455Lufthansa
Find Deal
Wed, 26 Mar - Wed, 9 Apr
18:00 - 09:46LHR-IAD
20h 46m1 stop
22:35 - 10:50IAD-LHR
7h 15mdirect
£465Lufthansa
Find Deal
Sat, 1 Feb - Tue, 25 Feb
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£470Virgin Atlantic
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Wed, 19 Feb - Wed, 26 Feb
12:45 - 16:15LHR-IAD
8h 30mdirect
18:10 - 06:45IAD-LHR
7h 35mdirect
£474Virgin Atlantic
Find Deal
Tue, 29 Apr - Thu, 8 May
16:30 - 20:45LHR-IAD
8h 15mdirect
19:25 - 07:45IAD-LHR
7h 20mdirect
£478British Airways
Find Deal
Mon, 24 Mar - Mon, 12 May
16:30 - 19:45LHR-IAD
8h 15mdirect
18:00 - 06:15IAD-LHR
7h 15mdirect
£479British Airways
Find Deal
Tue, 25 Feb - Tue, 4 Mar
06:45 - 15:50LCY-IAD
14h 05m1 stop
17:20 - 12:45IAD-LCY
14h 25m1 stop
£750Aer Lingus
Find Deal
Thu, 3 Apr - Sun, 6 Apr
21:45 - 19:05STN-IAD
26h 20m2 stops
Tue, 6 May
05:45 - 18:40STN-IAD
17h 55m2 stops
Fri, 7 Mar
08:50 - 15:40LHR-IAD
11h 50m1 stop
£379Aer Lingus
Find Deal
Mon, 3 Feb
06:50 - 15:40LCY-IAD
13h 50m1 stop
£394Aer Lingus
Find Deal
Mon, 3 Feb
12:05 - 15:45LHR-IAD
8h 40mdirect
£489Lufthansa
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Mon, 3 Mar
12:10 - 15:35LHR-IAD
8h 25mdirect
£497British Airways
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Tue, 11 Feb
10:00 - 20:20LCY-IAD
15h 20m1 stop
£520Lufthansa
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Wed, 12 Feb
16:30 - 19:45LHR-IAD
8h 15mdirect
£526British Airways
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Thu, 30 Jan
10:00 - 15:35LCY-IAD
10h 35m1 stop
£970Virgin Atlantic
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Sat, 7 Jun
10:00 - 00:09LCY-IAD
19h 09m2 stops
£1,151Virgin Atlantic
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Tue, 22 Apr
15:00 - 15:13LHR-IAD
29h 13m1 stop
06:05 - 20:35IAD-LHR
9h 30m1 stop
£425Lufthansa
Find Deal
Sat, 25 Jan - Mon, 27 Jan
06:30 - 18:25STN-IAD
16h 55m2 stops
19:40 - 18:20IAD-STN
17h 40m2 stops
Thu, 23 Jan - Sun, 26 Jan
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£528Aer Lingus
Find Deal
Thu, 23 Jan - Sun, 26 Jan
07:50 - 15:40LHR-IAD
12h 50m1 stop
17:10 - 08:05IAD-LHR
9h 55m1 stop
£531Aer Lingus
Find Deal
Thu, 23 Jan - Wed, 29 Jan
11:55 - 18:25LGW-IAD
11h 30m1 stop
19:40 - 10:55IAD-LGW
10h 15m1 stop
£574Icelandair
Find Deal
Thu, 23 Jan - Tue, 28 Jan
20:40 - 18:25LHR-IAD
26h 45m1 stop
19:40 - 10:50IAD-LHR
10h 10m1 stop
£576Icelandair
Find Deal
Fri, 24 Jan - Thu, 30 Jan
13:15 - 16:55LHR-IAD
8h 40mdirect
18:25 - 06:55IAD-LHR
7h 30mdirect
£736Virgin Atlantic
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Thu, 23 Jan - Sun, 26 Jan
18:55 - 15:45LCY-IAD
25h 50m1 stop
12:29 - 08:10IAD-LCY
14h 41m2 stops
£995Virgin Atlantic
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Sun, 26 Jan - Sun, 9 Feb
06:50 - 15:40LCY-IAD
13h 50m1 stop
17:10 - 10:45IAD-LCY
12h 35m1 stop
£1,099British Airways
Find Deal
Fri, 24 Jan - Fri, 31 Jan
09:10 - 15:40LCY-IAD
11h 30m1 stop
17:10 - 10:45IAD-LCY
12h 35m1 stop
£1,169British Airways
Find Deal
Thu, 23 Jan - Fri, 31 Jan
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£452Virgin Atlantic
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Mon, 3 Feb - Mon, 10 Feb
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£465Virgin Atlantic
Find Deal
Wed, 12 Feb - Wed, 5 Mar
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£470Virgin Atlantic
Find Deal
Wed, 19 Feb - Wed, 26 Feb
12:10 - 15:35LHR-IAD
8h 25mdirect
18:00 - 06:15IAD-LHR
7h 15mdirect
£475British Airways
Find Deal
Tue, 25 Feb - Tue, 4 Mar
16:30 - 20:45LHR-IAD
8h 15mdirect
19:25 - 07:45IAD-LHR
7h 20mdirect
£478British Airways
Find Deal
Mon, 24 Mar - Mon, 12 May
12:25 - 16:05LHR-IAD
8h 40mdirect
18:45 - 07:15IAD-LHR
7h 30mdirect
£483KLM
Find Deal
Mon, 17 Feb - Mon, 24 Feb
12:05 - 15:45LHR-IAD
8h 40mdirect
22:35 - 10:50IAD-LHR
7h 15mdirect
£510Lufthansa
Find Deal
Wed, 26 Feb - Tue, 4 Mar
12:05 - 15:40LHR-IAD
8h 35mdirect
18:30 - 06:55IAD-LHR
7h 25mdirect
£513Lufthansa
Find Deal
Sat, 8 Feb - Mon, 5 May
12:10 - 15:35LHR-IAD
8h 25mdirect
21:55 - 10:05IAD-LHR
7h 10mdirect
£541Finnair
Find Deal
Sun, 2 Feb - Sun, 16 Feb
17:00 - 20:10LHR-IAD
8h 10mdirect
22:40 - 11:05IAD-LHR
7h 25mdirect
£570Finnair
Find Deal
Thu, 24 Apr - Thu, 8 May

TAP AIR PORTUGAL flights from London to Washington, D.C. Dulles Intl Airport

Our best TAP AIR PORTUGAL deals on London to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL
30 Apr
LGW16:25London Gatwick
27h 55m
1 stop
IAD15:20Washington, D.C. Dulles Intl
11 May
IAD17:45Washington, D.C. Dulles Intl
16h 25m
1 stop
LGW15:10London Gatwick
TAP AIR PORTUGAL
24 Apr
LHR18:45London Heathrow
25h 35m
1 stop
IAD15:20Washington, D.C. Dulles Intl
27 Apr
IAD17:45Washington, D.C. Dulles Intl
11h 35m
1 stop
LHR10:20London Heathrow
TAP AIR PORTUGAL
13 May
LHR06:00London Heathrow
19h 50m
1 stop
IAD20:50Washington, D.C. Dulles Intl
18 May
IAD22:20Washington, D.C. Dulles Intl
15h 30m
1 stop
LHR18:50London Heathrow

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

Our best Icelandair deals on London to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
4 Mar
LGW11:55London Gatwick
11h 30m
1 stop
IAD18:25Washington, D.C. Dulles Intl
9 May
IAD20:30Washington, D.C. Dulles Intl
13h 10m
1 stop
LGW14:40London Gatwick
Icelandair
20 Feb
LGW11:55London Gatwick
11h 30m
1 stop
IAD18:25Washington, D.C. Dulles Intl
5 Mar
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
Icelandair
8 Feb
LGW11:55London Gatwick
11h 30m
1 stop
IAD18:25Washington, D.C. Dulles Intl
11 Feb
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

The month of February is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from London, with most prices found around £569. If you aren’t able to travel during the month of February, then book flights to Washington, D.C. Dulles Intl Airport from London during November instead. Flights to Washington, D.C. Dulles Intl Airport in November, while not as cheap as those in February, still average around £575.

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. The lowest ticket price found for a Tuesday departure recently was £634. 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 because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £718.

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 £578. 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 £719.

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

Fly from London Gatwick to Washington, D.C. Dulles Intl for the best London - 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 when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around £668 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from London for as low as £599 on momondo.

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

There are 4 cabin classes available to choose from on London 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.

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

As of January 2025, prices for London to Washington, D.C. Dulles Intl Airport flights are approximately 38% more expensive when compared to flights at the same time last year.

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

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

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

Best price found

£271

Fastest flight time

8h 10m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from London in the past 72 hours is £271. The best return flight deal from London to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £350.
The fastest flight from London to Washington, D.C. Dulles Intl Airport takes 8h 10m
Direct flights go from London to Washington, D.C. Dulles Intl Airport every day.

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

    There are 3677.3 mi between London and Washington, D.C. Dulles Intl. Typically, this will take 8h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from London to Washington, D.C. Dulles Intl Airport?

    Prices for flights from London to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from London 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 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 required for your trip to Washington, D.C. Dulles Intl Airport 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 license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. 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 to Washington, D.C. Dulles Intl Airport?

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


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

Compare and see reviews for airlines that fly from London to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom £273Free CancellationRating
7.1
92 reviews
Search PLAY flights
DeltaPriceFrom £350Free CancellationRating
8.0
8,521 reviews
Search Delta flights
IcelandairPriceFrom £409Free CancellationRating
7.1
501 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £412Free CancellationRating
7.1
1,869 reviews
Search TAP AIR PORTUGAL flights
Brussels AirlinesPriceFrom £418Free CancellationRating
7.3
349 reviews
Search Brussels Airlines flights
Scandinavian AirlinesPriceFrom £431Free CancellationRating
7.3
1,320 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom £447Free CancellationRating
7.0
8,635 reviews
Search Air Canada flights
Air FrancePriceFrom £482Free CancellationRating
7.4
1,490 reviews
Search Air France flights
Aer LingusPriceFrom £489Free CancellationRating
7.1
1,082 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £491Free CancellationRating
6.6
6,834 reviews
Search British Airways flights
  • Delta Flights From London to Washington, D.C. Dulles Intl Airport

    The lowest priced Delta flight from London to Washington, D.C. Dulles Intl Airport from the last 72 hours was £428. Generally, Delta has 6 flights on this route every week with an average price of £1,022. Delta is rated 8.0/10 by our users.

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

    Across 1,341 KLM reviews on momondo, the average score is 7.8/10. KLM flies from London to Washington, D.C. Dulles Intl Airport about 6 times each week, with ticket deals ranging from £681 to £883. Price data is based on momondo searches in the last 72 hours.


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

Book flights to Washington, D.C. if you plan to visit one of these locations
Winchester
Laurel
Alexandria
Essex
National Harbor
Fairfax
Harpers Ferry
Manassas
Bethesda
Oxon Hill
Chantilly
College Park
Front Royal
Hyattsville
Linthicum Heights
Gettysburg
Cambridge
Ellicott City
Westminster
Arlington

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Washington, D.C. . Millions of users trust and use momondo every year so you are in good hands.

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 for London to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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