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Cheap flights from the United Kingdom to Washington, D.C. from £215

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 27/8. 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.

TAP AIR PORTUGAL Logo
10:35 - 20:50LGW-IAD
15h 15m1 stop
TAP AIR PORTUGAL Logo
18:30 - 15:45IAD-LGW
17h 15m1 stop
£363TAP AIR PORTUGAL
Find Deal
Thu, 23 Oct - Mon, 27 Oct
TAP AIR PORTUGAL Logo
08:00 - 20:50LHR-IAD
17h 50m1 stop
TAP AIR PORTUGAL Logo
18:30 - 12:40IAD-LHR
14h 10m1 stop
£366TAP AIR PORTUGAL
Find Deal
Thu, 23 Oct - Mon, 27 Oct
Icelandair Logo
12:15 - 18:20LHR-IAD
11h 05m1 stop
Icelandair Logo
19:40 - 19:30IAD-LHR
18h 50m1 stop
£370Icelandair
Find Deal
Thu, 6 Nov - Mon, 10 Nov
Icelandair Logo
12:15 - 18:20LHR-IAD
11h 05m1 stop
Icelandair Logo
19:40 - 19:30IAD-LHR
18h 50m1 stop
£379Icelandair
Find Deal
Fri, 7 Nov - Mon, 10 Nov
Aer Lingus Logo
13:25 - 19:30LHR-IAD
11h 05m1 stop
Aer Lingus Logo
17:05 - 08:05IAD-LHR
10h 00m1 stop
£382Aer Lingus
Find Deal
Wed, 8 Oct - Sun, 30 Nov
Aer Lingus Logo
08:50 - 15:50LHR-IAD
12h 00m1 stop
Aer Lingus Logo
20:25 - 12:40IAD-LHR
11h 15m1 stop
£388Aer Lingus
Find Deal
Sun, 31 Aug - Sat, 13 Sep
Virgin Atlantic Logo
09:20 - 15:35LCY-IAD
11h 15m1 stop
Virgin Atlantic Logo
17:25 - 09:30IAD-LCY
11h 05m1 stop
£509Virgin Atlantic
Find Deal
Thu, 11 Sep - Wed, 17 Sep
Virgin Atlantic Logo
09:20 - 15:35LCY-IAD
11h 15m1 stop
Virgin Atlantic Logo
17:25 - 08:10IAD-LCY
9h 45m1 stop
£511Virgin Atlantic
Find Deal
Thu, 11 Sep - Wed, 17 Sep
British Airways Logo
09:30 - 15:35EDI-IAD
11h 05m1 stop
British Airways Logo
18:20 - 09:30IAD-EDI
10h 10m1 stop
£532British Airways
Find Deal
Wed, 26 Nov - Wed, 3 Dec
British Airways Logo
09:15 - 15:55EDI-IAD
11h 40m1 stop
British Airways Logo
17:50 - 09:20IAD-EDI
10h 30m1 stop
£541British Airways
Find Deal
Tue, 7 Oct - Thu, 16 Oct

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

Our best Icelandair deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
Icelandair
6 Nov
LHR12:15London Heathrow
11h 05m
1 stop
IAD18:20Washington, D.C. Dulles Intl
10 Nov
IAD19:40Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR19:30London Heathrow
£370
Find similar
Icelandair
7 Nov
LHR12:15London Heathrow
11h 05m
1 stop
IAD18:20Washington, D.C. Dulles Intl
10 Nov
IAD19:40Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR19:30London Heathrow
£379
Find similar
Icelandair
28 Aug
LGW13:00London Gatwick
11h 20m
1 stop
IAD19:20Washington, D.C. Dulles Intl
4 Sept
IAD23:15Washington, D.C. Dulles Intl
31h 30m
1 stop
LGW11:45London Gatwick
£391
Find similar

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
27 Sept
LHR17:40London Heathrow
24h 58m
2 stops
IAD13:38Washington, D.C. Dulles Intl
28 Sept
IAD22:15Washington, D.C. Dulles Intl
13h 25m
1 stop
LHR16:40London Heathrow
£371
Find similar
United Airlines
13 Sept
LHR12:15London Heathrow
8h 15m
IAD15:30Washington, D.C. Dulles Intl
13 Sept
IAD17:37Washington, D.C. Dulles Intl
31h 53m
1 stop
LHR06:30London Heathrow
£422
Find similar
United Airlines
6 Aug
LHR08:30London Heathrow
11h 45m
1 stop
IAD15:15Washington, D.C. Dulles Intl
14 Aug
IAD06:15Washington, D.C. Dulles Intl
9h 25m
1 stop
LHR20:40London Heathrow
£533
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 1 August 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

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 23/10

10:35-20:50

1 stop15h 15m

Washington, D.C. Dulles Intl

Mon 27/10

18:30-15:45

1 stop17h 15m

£363

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 23/10

08:00-20:50

1 stop17h 50m

Washington, D.C. Dulles Intl

Mon 27/10

18:30-12:40

1 stop14h 10m

£366

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 6/11

12:15-18:20

1 stop11h 05m

Washington, D.C. Dulles Intl

Mon 10/11

19:40-19:30

1 stop18h 50m

£370

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 7/11

12:15-18:20

1 stop11h 05m

Washington, D.C. Dulles Intl

Mon 10/11

19:40-19:30

1 stop18h 50m

£379

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 8/10

13:25-19:30

1 stop11h 05m

Washington, D.C. Dulles Intl

Sun 30/11

17:05-08:05

1 stop10h 00m

£382

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 31/8

08:50-15:50

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 13/9

20:25-12:40

1 stop11h 15m

£388

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Thu 11/9

09:20-15:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Wed 17/9

17:25-09:30

1 stop11h 05m

£509

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Thu 11/9

09:20-15:35

1 stop11h 15m

Washington, D.C. Dulles Intl

Wed 17/9

17:25-08:10

1 stop9h 45m

£511

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Wed 26/11

09:30-15:35

1 stop11h 05m

Washington, D.C. Dulles Intl

Wed 3/12

18:20-09:30

1 stop10h 10m

£532

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Tue 7/10

09:15-15:55

1 stop11h 40m

Washington, D.C. Dulles Intl

Thu 16/10

17:50-09:20

1 stop10h 30m

£541

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 March is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from United Kingdom, with most prices found around £512. If you aren’t able to travel during the month of March, then book flights to Washington, D.C. Dulles Intl Airport from United Kingdom during November instead. Flights to Washington, D.C. Dulles Intl Airport in November, while not as cheap as those in March, still average around £523.

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 £619. 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 £695.

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 £535. 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 £649.

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 £613 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 £552 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 52% 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

£215

Fastest flight time

8h 15m

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 £215. The best return flight deal from United Kingdom to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £363.
The fastest flight from United Kingdom to Washington, D.C. Dulles Intl Airport takes 8h 15m
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 £191Free CancellationRating
8.0
7,981 reviews
Search Delta flights
PLAYPriceFrom £252Free CancellationRating
7.0
102 reviews
Search PLAY flights
IcelandairPriceFrom £352Free CancellationRating
7.0
520 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £358Free CancellationRating
7.1
1,933 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom £370Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
LufthansaPriceFrom £370Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £427Free CancellationRating
7.3
1,457 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom £433Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights
Air FrancePriceFrom £445Free CancellationRating
7.5
1,465 reviews
Search Air France flights
United AirlinesPriceFrom £453Free CancellationRating
7.4
8,900 reviews
Search United Airlines 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
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
Chantilly
College Park
Linthicum Heights
Gettysburg
Front Royal
Hanover
Cambridge
Ellicott City
Westminster
Arlington
Ashburn
Woodbridge

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.

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