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Cheap flights from the United Kingdom to Washington, D.C. from £212

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 22/4. 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.

Enter your travel dates to find the best prices.
Austrian Airlines Logo
06:00 - 14:40
LHR
-
IAD
13h 40m
1 stop
Austrian Airlines Logo
18:20 - 06:40
IAD
-
LHR
7h 20mdirect
£395Austrian Airlines
Sun, 22 Feb - Sat, 28 Feb
Austrian Airlines Logo
19:25 - 14:40
LHR
-
IAD
24h 15m
1 stop
Austrian Airlines Logo
22:15 - 10:50
IAD
-
LHR
7h 35mdirect
£396Austrian Airlines
Wed, 25 Feb - Mon, 2 Mar
Icelandair Logo
11:55 - 18:30
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
19:40 - 10:55
IAD
-
LGW
10h 15m
1 stop
£397Icelandair
Wed, 18 Feb - Sat, 28 Feb
United Airlines Logo
08:30 - 15:50
LHR
-
IAD
12h 20m
1 stop
United Airlines Logo
06:00 - 20:35
IAD
-
LHR
10h 35m
1 stop
£397United Airlines
Wed, 18 Feb - Wed, 25 Mar
United Airlines Logo
09:00 - 17:40
LHR
-
IAD
12h 40m
1 stop
United Airlines Logo
13:02 - 07:10
IAD
-
LHR
14h 08m
2 stops
£398United Airlines
Tue, 10 Mar - Tue, 17 Mar
Lufthansa Logo
06:35 - 15:35
LHR
-
IAD
14h 00m
1 stop
Lufthansa Logo
22:15 - 10:50
IAD
-
LHR
7h 35mdirect
£399Lufthansa
Tue, 10 Feb - Tue, 17 Feb
Icelandair Logo
13:05 - 19:20
LHR
-
IAD
11h 15m
1 stop
Icelandair Logo
20:30 - 11:55
IAD
-
LHR
10h 25m
1 stop
£401Icelandair
Wed, 6 May - Wed, 27 May
Lufthansa Logo
07:40 - 15:35
LHR
-
IAD
12h 55m
1 stop
Lufthansa Logo
17:40 - 17:05
IAD
-
LHR
18h 25m
1 stop
£402Lufthansa
Tue, 10 Feb - Tue, 17 Feb
British Airways Logo
08:50 - 16:35
NCL
-
IAD
11h 45m
1 stop
British Airways Logo
14:03 - 11:00
IAD
-
NCL
16h 57m
2 stops
£511British Airways
Fri, 13 Mar - Fri, 20 Mar
British Airways Logo
09:00 - 15:35
NCL
-
IAD
11h 35m
1 stop
British Airways Logo
17:05 - 08:30
IAD
-
NCL
10h 25m
1 stop
£534British Airways
Fri, 6 Feb - Sun, 8 Feb

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
18 Feb
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
28 Feb
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
£397
Icelandair
6 May
LHR13:05London Heathrow
11h 15m
1 stop
IAD19:20Washington, D.C. Dulles Intl
26 May
IAD20:30Washington, D.C. Dulles Intl
18h 50m
1 stop
LHR20:20London Heathrow
£401
Icelandair
31 Jan
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
7 Feb
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
£409

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

Our best British Airways deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
5 Feb
LHR09:55London Heathrow
12h 21m
1 stop
IAD17:16Washington, D.C. Dulles Intl
28 Jul
IAD17:45Washington, D.C. Dulles Intl
10h 20m
1 stop
LHR09:05London Heathrow
£409
British Airways
4 Mar
LHR08:50London Heathrow
11h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
3 Jun
IAD19:15Washington, D.C. Dulles Intl
7h 30m
LHR07:45London Heathrow
£413
British Airways
10 Feb
LHR09:55London Heathrow
12h 21m
1 stop
IAD17:16Washington, D.C. Dulles Intl
28 Jun
IAD17:00Washington, D.C. Dulles Intl
11h 30m
1 stop
LHR09:30London Heathrow
£419

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 28 January 2026.
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.

LHR - IAD

LHRIAD

London Heathrow

Sun 22/2

06:00-14:40

1 stop13h 40m

Washington, D.C. Dulles Intl

Sat 28/2

18:20-06:40

Nonstop7h 20m

£395

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 25/2

19:25-14:40

1 stop24h 15m

Washington, D.C. Dulles Intl

Mon 2/3

22:15-10:50

Nonstop7h 35m

£396

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 18/2

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 28/2

19:40-10:55

1 stop10h 15m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 18/2

08:30-15:50

1 stop12h 20m

Washington, D.C. Dulles Intl

Wed 25/3

06:00-20:35

1 stop10h 35m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 10/3

09:00-17:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Tue 17/3

13:02-07:10

2 stops14h 08m

£398

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 10/2

06:35-15:35

1 stop14h 00m

Washington, D.C. Dulles Intl

Tue 17/2

22:15-10:50

Nonstop7h 35m

£399

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 6/5

13:05-19:20

1 stop11h 15m

Washington, D.C. Dulles Intl

Wed 27/5

20:30-11:55

1 stop10h 25m

£401

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 10/2

07:40-15:35

1 stop12h 55m

Washington, D.C. Dulles Intl

Tue 17/2

17:40-17:05

1 stop18h 25m

£402

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Fri 13/3

08:50-16:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Fri 20/3

14:03-11:00

2 stops16h 57m

£511

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Fri 6/2

09:00-15:35

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 8/2

17:05-08:30

1 stop10h 25m

£534

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 £475. 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 November instead. Flights to Washington, D.C. Dulles Intl Airport in November, while not as cheap as those in September, still average around £486.

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

According to our data, Thursday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from United Kingdom. The lowest ticket price found for a Thursday departure recently was £570. 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 £618.

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 at midday when flights can be purchased for as low as £581. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £584.

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

Fly from Edinburgh Turnhouse 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 £544 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 £521 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 27% 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

£475

Fastest flight time

8h 00m

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 £475. The best return flight deal from United Kingdom to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £415.
The fastest flight from United Kingdom to Washington, D.C. Dulles Intl Airport takes 8h 00m
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 £184Free CancellationRating
7.9
8,124 reviews
Search Delta flights
IcelandairPriceFrom £327Free CancellationRating
7.1
603 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £341Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom £357Free CancellationRating
7.6
1,356 reviews
Search Finnair flights
Aer LingusPriceFrom £368Free CancellationRating
7.2
1,442 reviews
Search Aer Lingus flights
Air FrancePriceFrom £374Free CancellationRating
7.4
1,528 reviews
Search Air France flights
United AirlinesPriceFrom £396Free CancellationRating
7.4
9,209 reviews
Search United Airlines flights
LufthansaPriceFrom £398Free CancellationRating
6.8
7,749 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom £407Free CancellationRating
7.5
895 reviews
Search Austrian Airlines flights
Virgin AtlanticPriceFrom £408Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Fairfax
Arlington
Linthicum Heights
Alexandria
Glen Burnie
Lutherville Timonium
Front Royal
Winchester
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Ashburn
Sterling
Rockville
Silver Spring

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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