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Cheap flights from the United Kingdom to Washington, D.C. from £264

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Washington, D.C. departing on 2/11. 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 the United Kingdom to Washington, D.C.

Recent return flight deals from the United Kingdom to Washington, D.C.

Multiple Airlines Logo
07:25 - 20:30LBA-IAD
17h 05m1 stop
Multiple Airlines Logo
21:00 - 21:40IAD-LBA
19h 40m1 stop
£388Multiple Airlines
Find Deal
Thu, 30 Oct - Thu, 6 Nov
United Airlines Logo
09:00 - 16:40LHR-IAD
12h 40m1 stop
United Airlines Logo
19:20 - 06:40IAD-LHR
7h 20mdirect
£393United Airlines
Find Deal
Tue, 3 Mar - Thu, 12 Mar
Lufthansa Logo
11:30 - 20:15LHR-IAD
13h 45m1 stop
Lufthansa Logo
22:15 - 10:50IAD-LHR
7h 35mdirect
£397Lufthansa
Find Deal
Sat, 10 Jan - Sat, 24 Jan
Virgin Atlantic Logo
12:35 - 16:00LHR-IAD
8h 25mdirect
Virgin Atlantic Logo
19:59 - 11:25IAD-LHR
10h 26m1 stop
£400Virgin Atlantic
Find Deal
Wed, 1 Oct - Wed, 8 Oct
British Airways Logo
16:25 - 19:55LHR-IAD
8h 30mdirect
British Airways Logo
22:45 - 10:00IAD-LHR
7h 15mdirect
£401British Airways
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Thu, 5 Mar - Thu, 12 Mar
Virgin Atlantic Logo
06:30 - 23:39LHR-IAD
21h 09m2 stops
Virgin Atlantic Logo
17:03 - 08:45IAD-LHR
10h 42m1 stop
£405Virgin Atlantic
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Thu, 30 Oct - Wed, 12 Nov
British Airways Logo
12:10 - 15:35LHR-IAD
8h 25mdirect
British Airways Logo
21:45 - 10:00IAD-LHR
7h 15mdirect
£411British Airways
Find Deal
Tue, 25 Nov - Sun, 30 Nov
Lufthansa Logo
12:15 - 15:30LHR-IAD
8h 15mdirect
Lufthansa Logo
22:25 - 10:40IAD-LHR
7h 15mdirect
£419Lufthansa
Find Deal
Fri, 26 Sep - Tue, 30 Sep
Aer Lingus Logo
11:55 - 18:55EDI-IAD
12h 00m1 stop
Aer Lingus Logo
17:20 - 12:50IAD-EDI
14h 30m1 stop
£435Aer Lingus
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Mon, 13 Oct - Mon, 20 Oct
Aer Lingus Logo
08:05 - 15:35MAN-IAD
12h 30m1 stop
Aer Lingus Logo
17:05 - 09:30IAD-MAN
11h 25m1 stop
£442Aer Lingus
Find Deal
Fri, 9 Jan - Wed, 14 Jan

United Airlines flights from United Kingdom to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
3 Mar
LHR09:00London Heathrow
12h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
12 Mar
IAD19:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
£393
Find similar
United Airlines
22 Sept
LHR06:50London Heathrow
11h 40m
1 stop
IAD13:30Washington, D.C. Dulles Intl
28 Sept
IAD18:40Washington, D.C. Dulles Intl
7h 15m
LHR06:55London Heathrow
£394
Find similar
United Airlines
2 Mar
LHR07:40London Heathrow
12h 55m
1 stop
IAD15:35Washington, D.C. Dulles Intl
12 Mar
IAD19:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
£395
Find similar

SWISS flights from United Kingdom to Washington, D.C. Dulles Intl Airport

Our best SWISS deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
SWISS
27 Oct
LHR20:05London Heathrow
23h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
7 Nov
IAD20:30Washington, D.C. Dulles Intl
14h 50m
1 stop
LHR16:20London Heathrow
£394
Find similar
SWISS
21 Nov
LHR06:00London Heathrow
15h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
11 Dec
IAD18:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
£405
Find similar
SWISS
6 Nov
LGW18:40London Gatwick
25h 50m
1 stop
IAD15:30Washington, D.C. Dulles Intl
12 Nov
IAD17:25Washington, D.C. Dulles Intl
19h 25m
1 stop
LGW17:50London Gatwick
£408
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LeedsWashington, D.C.

LBA - IAD

LBAIAD

Leeds/Bradford

Thu 30/10

07:25-20:30

1 stop17h 05m

Washington, D.C. Dulles Intl

Thu 6/11

21:00-21:40

1 stop19h 40m

£388

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/3

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 12/3

19:20-06:40

Nonstop7h 20m

£393

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 10/1

11:30-20:15

1 stop13h 45m

Washington, D.C. Dulles Intl

Sat 24/1

22:15-10:50

Nonstop7h 35m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 1/10

12:35-16:00

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 8/10

19:59-11:25

1 stop10h 26m

£400

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 5/3

16:25-19:55

Nonstop8h 30m

Washington, D.C. Dulles Intl

Thu 12/3

22:45-10:00

Nonstop7h 15m

£401

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 30/10

06:30-23:39

2 stops21h 09m

Washington, D.C. Dulles Intl

Wed 12/11

17:03-08:45

1 stop10h 42m

£405

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 25/11

12:10-15:35

Nonstop8h 25m

Washington, D.C. Dulles Intl

Sun 30/11

21:45-10:00

Nonstop7h 15m

£411

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 26/9

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Tue 30/9

22:25-10:40

Nonstop7h 15m

£419

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Mon 13/10

11:55-18:55

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 20/10

17:20-12:50

1 stop14h 30m

£435

ManchesterWashington, D.C.

MAN - IAD

MANIAD

Manchester

Fri 9/1

08:05-15:35

1 stop12h 30m

Washington, D.C. Dulles Intl

Wed 14/1

17:05-09:30

1 stop11h 25m

£442

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from United Kingdom 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 September is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from United Kingdom, with most prices found around £492. If you aren’t able to travel during the month of September, then book flights to Washington, D.C. Dulles Intl Airport from United Kingdom during March instead. Flights to Washington, D.C. Dulles Intl Airport in March, while not as cheap as those in September, still average around £498.

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

According to our data, Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from United Kingdom. The lowest ticket price found for a Wednesday departure recently was £592. 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 United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £670.

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 £521. 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 £626.

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

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best United Kingdom - 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 United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around £575 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from United Kingdom for as low as £538 on momondo.

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

There are 4 cabin classes available to choose from on United Kingdom 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 United Kingdom to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a United Kingdom to Washington, D.C. Dulles Intl Airport flight.

Cheap United Kingdom to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best price found

£470

Fastest flight time

8h 05m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from United Kingdom in the past 72 hours is £470. The best return flight deal from United Kingdom to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £469.
The fastest flight from United Kingdom to Washington, D.C. Dulles Intl Airport takes 8h 05m
Direct flights go from United Kingdom to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    Prices for flights from United Kingdom to Washington, D.C. Dulles Intl Airport are updated daily.

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

  • How old do you have to be to fly from United Kingdom 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 United Kingdom to Washington, D.C. Dulles Intl Airport.

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

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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 United Kingdom to Washington, D.C. Dulles Intl Airport?

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

Compare and see reviews for airlines that fly from United Kingdom to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £186Free CancellationRating
7.9
7,954 reviews
Search Delta flights
PLAYPriceFrom £242Free CancellationRating
7.0
103 reviews
Search PLAY flights
IcelandairPriceFrom £343Free CancellationRating
7.0
544 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £349Free CancellationRating
7.1
1,975 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom £361Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
LufthansaPriceFrom £361Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Aer LingusPriceFrom £393Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £414Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom £421Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights
Air FrancePriceFrom £433Free CancellationRating
7.4
1,469 reviews
Search Air France flights

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
College Park
Essex
Alexandria
Fairfax
Bethesda
Oxon Hill
Gettysburg
Front Royal
Cambridge
Ellicott City
Westminster
Arlington
Ashburn
Woodbridge
Owings Mills
Sterling
Silver Spring
National Harbor

Why use momondo?

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

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

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

Yes. All flights to Washington, D.C. from United Kingdom on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from United Kingdom to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from United Kingdom to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from United Kingdom and alert you when they change.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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