Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from the United Kingdom to Washington, D.C. from £263

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 6/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
Multiple Airlines Logo
06:50 - 19:30LTN-IAD
17h 40m1 stop
Multiple Airlines Logo
17:05 - 09:45IAD-LTN
11h 40m1 stop
£435Multiple Airlines
Find Deal
Wed, 10 Dec - Tue, 16 Dec
TAP AIR PORTUGAL Logo
10:40 - 21:00LGW-IAD
15h 20m1 stop
TAP AIR PORTUGAL Logo
23:30 - 15:05IAD-LGW
11h 35m1 stop
£436TAP AIR PORTUGAL
Find Deal
Wed, 4 Mar - Wed, 11 Mar
Icelandair Logo
20:35 - 19:30LHR-IAD
26h 55m1 stop
Icelandair Logo
20:30 - 11:55IAD-LHR
10h 25m1 stop
£439Icelandair
Find Deal
Thu, 19 Mar - Wed, 1 Apr
Icelandair Logo
13:00 - 19:20LGW-IAD
11h 20m1 stop
Icelandair Logo
23:35 - 14:40IAD-LGW
10h 05m1 stop
£440Icelandair
Find Deal
Thu, 30 Apr - Wed, 6 May
Aer Lingus Logo
08:20 - 15:35EDI-IAD
12h 15m1 stop
Aer Lingus Logo
21:00 - 14:45IAD-EDI
12h 45m1 stop
£448Aer Lingus
Find Deal
Thu, 27 Nov - Sun, 7 Dec
Virgin Atlantic Logo
10:00 - 16:05LHR-IAD
11h 05m1 stop
Virgin Atlantic Logo
22:20 - 10:50IAD-LHR
7h 30mdirect
£449Virgin Atlantic
Find Deal
Mon, 19 Jan - Tue, 17 Feb
Virgin Atlantic Logo
10:00 - 16:05LCY-IAD
11h 05m1 stop
Virgin Atlantic Logo
18:05 - 09:30IAD-LCY
10h 25m1 stop
£472Virgin Atlantic
Find Deal
Mon, 12 Jan - Tue, 20 Jan
Aer Lingus Logo
08:20 - 19:30BRS-IAD
16h 10m1 stop
Aer Lingus Logo
17:05 - 15:20IAD-BRS
17h 15m1 stop
£525Aer Lingus
Find Deal
Wed, 10 Dec - Wed, 17 Dec
British Airways Logo
05:55 - 17:25NCL-IAD
16h 30m1 stop
British Airways Logo
17:40 - 10:25IAD-NCL
11h 45m1 stop
£688British Airways
Find Deal
Mon, 4 May - Mon, 18 May
British Airways Logo
16:50 - 15:35NCL-IAD
27h 45m1 stop
British Airways Logo
16:41 - 14:55IAD-NCL
17h 14m2 stops
£697British Airways
Find Deal
Sun, 15 Feb - Mon, 23 Feb

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

Our best TAP AIR PORTUGAL deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL
4 Mar
LGW10:40London Gatwick
15h 20m
1 stop
IAD21:00Washington, D.C. Dulles Intl
11 Mar
IAD23:30Washington, D.C. Dulles Intl
11h 35m
1 stop
LGW15:05London Gatwick
£436
Find similar
TAP AIR PORTUGAL
14 Dec
LHR19:55London Heathrow
24h 20m
1 stop
IAD15:15Washington, D.C. Dulles Intl
28 Jan
IAD22:30Washington, D.C. Dulles Intl
15h 25m
1 stop
LHR18:55London Heathrow
£458
Find similar
TAP AIR PORTUGAL
11 Dec
LHR06:00London Heathrow
14h 15m
1 stop
IAD15:15Washington, D.C. Dulles Intl
10 Jan
IAD17:30Washington, D.C. Dulles Intl
20h 25m
1 stop
LHR18:55London Heathrow
£466
Find similar

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

Our best Scandinavian Airlines deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
Scandinavian Airlines
4 Mar
LHR10:20London Heathrow
11h 55m
1 stop
IAD17:15Washington, D.C. Dulles Intl
11 Mar
IAD21:30Washington, D.C. Dulles Intl
14h 55m
2 stops
LHR16:25London Heathrow
£436
Find similar
Scandinavian Airlines
4 Mar
LHR07:05London Heathrow
15h 10m
2 stops
IAD17:15Washington, D.C. Dulles Intl
11 Mar
IAD21:30Washington, D.C. Dulles Intl
14h 55m
2 stops
LHR16:25London Heathrow
£439
Find similar
Scandinavian Airlines
5 Feb
LHR06:40London Heathrow
15h 35m
1 stop
IAD17:15Washington, D.C. Dulles Intl
9 Feb
IAD20:30Washington, D.C. Dulles Intl
17h 20m
2 stops
LHR18:50London Heathrow
£441
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 13 November 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.

LTN - IAD

LTNIAD

London Luton

Wed 10/12

06:50-19:30

1 stop17h 40m

Washington, D.C. Dulles Intl

Tue 16/12

17:05-09:45

1 stop11h 40m

£435

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 4/3

10:40-21:00

1 stop15h 20m

Washington, D.C. Dulles Intl

Wed 11/3

23:30-15:05

1 stop11h 35m

£436

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 19/3

20:35-19:30

1 stop26h 55m

Washington, D.C. Dulles Intl

Wed 1/4

20:30-11:55

1 stop10h 25m

£439

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 30/4

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Wed 6/5

23:35-14:40

1 stop10h 05m

£440

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Thu 27/11

08:20-15:35

1 stop12h 15m

Washington, D.C. Dulles Intl

Sun 7/12

21:00-14:45

1 stop12h 45m

£448

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 19/1

10:00-16:05

1 stop11h 05m

Washington, D.C. Dulles Intl

Tue 17/2

22:20-10:50

Nonstop7h 30m

£449

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Mon 12/1

10:00-16:05

1 stop11h 05m

Washington, D.C. Dulles Intl

Tue 20/1

18:05-09:30

1 stop10h 25m

£472

BristolWashington, D.C.

BRS - IAD

BRSIAD

Bristol

Wed 10/12

08:20-19:30

1 stop16h 10m

Washington, D.C. Dulles Intl

Wed 17/12

17:05-15:20

1 stop17h 15m

£525

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Mon 4/5

05:55-17:25

1 stop16h 30m

Washington, D.C. Dulles Intl

Mon 18/5

17:40-10:25

1 stop11h 45m

£688

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Sun 15/2

16:50-15:35

1 stop27h 45m

Washington, D.C. Dulles Intl

Mon 23/2

16:41-14:55

2 stops17h 14m

£697

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £497. 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 £518.

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 £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 United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £690.

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 £539. 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 £643.

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 £588 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 £528 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 3% 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

£527

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 £527. The best return flight deal from United Kingdom to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is £529.
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 £193Free CancellationRating
7.9
8,009 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom £361Free CancellationRating
7.1
2,059 reviews
Search TAP AIR PORTUGAL flights
FinnairPriceFrom £373Free CancellationRating
7.6
1,335 reviews
Search Finnair flights
LufthansaPriceFrom £373Free CancellationRating
6.8
7,570 reviews
Search Lufthansa flights
IcelandairPriceFrom £374Free CancellationRating
7.1
578 reviews
Search Icelandair flights
Aer LingusPriceFrom £394Free CancellationRating
7.2
1,370 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £402Free CancellationRating
7.4
9,016 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom £435Free CancellationRating
7.4
1,573 reviews
Search Scandinavian Airlines flights
Virgin AtlanticPriceFrom £444Free CancellationRating
7.5
673 reviews
Search Virgin Atlantic flights
KLMPriceFrom £447Free CancellationRating
7.7
1,410 reviews
Search KLM 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
Alexandria
Fairfax
Linthicum Heights
Bethesda
Front Royal
Cambridge
Winchester
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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 13/12
Sat 20/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.