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Cheap flights from Washington, D.C. Dulles Intl Airport to the United Kingdom from £152

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to the United Kingdom departing on 16/11. 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 Washington, D.C. Dulles Intl Airport to the United Kingdom

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
20:40 - 09:55IAD-GLA
9h 15m1 stop
Icelandair Logo
12:35 - 19:30GLA-IAD
10h 55m1 stop
£356Icelandair
Find Deal
Tue, 17 Mar - Tue, 24 Mar
Icelandair Logo
19:40 - 10:45IAD-MAN
10h 05m1 stop
Icelandair Logo
11:55 - 18:30MAN-IAD
11h 35m1 stop
£361Icelandair
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Sun, 9 Nov - Thu, 13 Nov
Icelandair Logo
19:40 - 10:45IAD-MAN
10h 05m1 stop
Icelandair Logo
11:55 - 18:30MAN-IAD
11h 35m1 stop
£364Icelandair
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Thu, 8 Jan - Sat, 17 Jan
British Airways Logo
22:45 - 10:00IAD-LHR
7h 15mdirect
British Airways Logo
12:10 - 15:35LHR-IAD
8h 25mdirect
£440British Airways
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Wed, 29 Oct - Tue, 4 Nov
Virgin Atlantic Logo
19:50 - 13:45IAD-LHR
13h 55m1 stop
Virgin Atlantic Logo
08:40 - 16:05LHR-IAD
12h 25m1 stop
£441Virgin Atlantic
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Sun, 26 Oct - Tue, 4 Nov
Iberia Logo
18:20 - 06:30IAD-LHR
7h 10mdirect
Iberia Logo
12:10 - 15:35LHR-IAD
8h 25mdirect
£442Iberia
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Wed, 28 Jan - Tue, 3 Feb
Virgin Atlantic Logo
23:20 - 10:50IAD-LHR
7h 30mdirect
Virgin Atlantic Logo
06:30 - 16:05LHR-IAD
14h 35m1 stop
£442Virgin Atlantic
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Sun, 26 Oct - Tue, 4 Nov
British Airways Logo
18:20 - 09:30IAD-GLA
10h 10m1 stop
British Airways Logo
08:55 - 15:35GLA-IAD
11h 40m1 stop
£462British Airways
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Thu, 6 Nov - Tue, 11 Nov
United Airlines Logo
17:15 - 12:35IAD-BHX
14h 20m1 stop
United Airlines Logo
06:00 - 11:23BHX-IAD
34h 23m2 stops
£493United Airlines
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Fri, 7 Nov - Tue, 11 Nov
United Airlines Logo
13:20 - 12:35IAD-BHX
18h 15m2 stops
United Airlines Logo
13:25 - 20:15BHX-IAD
11h 50m1 stop
£500United Airlines
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Thu, 19 Feb - Tue, 24 Feb

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

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to United Kingdom flight tickets
British Airways
29 Oct
IAD22:45Washington, D.C. Dulles Intl
7h 15m
LHR10:00London Heathrow
4 Nov
LHR12:10London Heathrow
8h 25m
IAD15:35Washington, D.C. Dulles Intl
£440
Find similar
British Airways
6 Nov
IAD18:20Washington, D.C. Dulles Intl
10h 10m
1 stop
GLA09:30Glasgow Intl
11 Nov
GLA08:55Glasgow Intl
11h 40m
1 stop
IAD15:35Washington, D.C. Dulles Intl
£462
Find similar
British Airways
7 Mar
IAD18:20Washington, D.C. Dulles Intl
10h 05m
1 stop
GLA09:25Glasgow Intl
14 Mar
GLA08:40Glasgow Intl
11h 55m
1 stop
IAD16:35Washington, D.C. Dulles Intl
£466
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SWISS flights from Washington, D.C. Dulles Intl Airport to United Kingdom

Our best SWISS deals on Washington, D.C. Dulles Intl Airport to United Kingdom flight tickets
SWISS
26 Oct
IAD21:30Washington, D.C. Dulles Intl
11h 20m
1 stop
LCY12:50London City
4 Nov
LCY09:15London City
12h 25m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£424
Find similar
SWISS
23 Nov
IAD20:30Washington, D.C. Dulles Intl
14h 50m
1 stop
LHR16:20London Heathrow
1 Dec
LHR20:05London Heathrow
25h 35m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£432
Find similar
SWISS
26 Oct
IAD21:30Washington, D.C. Dulles Intl
16h 20m
1 stop
LHR17:50London Heathrow
20 Nov
LHR09:00London Heathrow
12h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£433
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport to United Kingdom 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 10 October 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 17/3

20:40-09:55

1 stop9h 15m

Glasgow Intl

Tue 24/3

12:35-19:30

1 stop10h 55m

£356

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Sun 9/11

19:40-10:45

1 stop10h 05m

Manchester

Thu 13/11

11:55-18:30

1 stop11h 35m

£361

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Thu 8/1

19:40-10:45

1 stop10h 05m

Manchester

Sat 17/1

11:55-18:30

1 stop11h 35m

£364

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 29/10

22:45-10:00

Nonstop7h 15m

London Heathrow

Tue 4/11

12:10-15:35

Nonstop8h 25m

£440

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 26/10

19:50-13:45

1 stop13h 55m

London Heathrow

Tue 4/11

08:40-16:05

1 stop12h 25m

£441

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 28/1

18:20-06:30

Nonstop7h 10m

London Heathrow

Tue 3/2

12:10-15:35

Nonstop8h 25m

£442

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 26/10

23:20-10:50

Nonstop7h 30m

London Heathrow

Tue 4/11

06:30-16:05

1 stop14h 35m

£442

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Thu 6/11

18:20-09:30

1 stop10h 10m

Glasgow Intl

Tue 11/11

08:55-15:35

1 stop11h 40m

£462

Washington, D.C.Birmingham

IAD - BHX

IADBHX

Washington, D.C. Dulles Intl

Fri 7/11

17:15-12:35

1 stop14h 20m

Birmingham

Tue 11/11

06:00-11:23

2 stops34h 23m

£493

Washington, D.C.Birmingham

IAD - BHX

IADBHX

Washington, D.C. Dulles Intl

Thu 19/2

13:20-12:35

2 stops18h 15m

Birmingham

Tue 24/2

13:25-20:15

1 stop11h 50m

£500

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Washington, D.C. Dulles Intl Airport is in October. Flight prices, which tend to average around £469, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from Washington, D.C. Dulles Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around £469.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £528. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to United Kingdom for around £651.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the evening when flights can be purchased for as low as £582. Try not to purchase tickets in the afternoon because they tend to be around £591. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from Washington, D.C. Dulles Intl to London Heathrow for the best Washington, D.C. Dulles Intl - United Kingdom flight prices

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £569 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Washington, D.C. Dulles Intl Airport for as low as £527 on momondo.

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

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

You could potentially save up to 56% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to United Kingdom flight.

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

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

Best price found

£282

Fastest flight time

7h 05m

Direct flights

Every day

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from Washington, D.C. Dulles Intl Airport in the past 72 hours is £282. The best return flight deal from Washington, D.C. Dulles Intl Airport to United Kingdom found on momondo in the last 72 hours is £490.
The fastest flight from Washington, D.C. Dulles Intl Airport to United Kingdom takes 7h 05m
Direct flights go from Washington, D.C. Dulles Intl Airport to United Kingdom every day.
There are 2 airports near United Kingdom: London Heathrow (LHR), Edinburgh Turnhouse (EDI)
Search flight deals

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents you'll need for your trip to United Kingdom may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to United Kingdom?

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom £311Free CancellationRating
6.8
7,467 reviews
Search Lufthansa flights
IcelandairPriceFrom £350Free CancellationRating
7.0
553 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £385Free CancellationRating
7.4
665 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £389Free CancellationRating
6.7
7,449 reviews
Search British Airways flights
Air FrancePriceFrom £400Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Aer LingusPriceFrom £445Free CancellationRating
7.2
1,328 reviews
Search Aer Lingus flights
IberiaPriceFrom £461Free CancellationRating
7.0
2,982 reviews
Search Iberia flights
KLMPriceFrom £509Free CancellationRating
7.7
1,401 reviews
Search KLM flights
United AirlinesPriceFrom £527Free CancellationRating
7.4
8,973 reviews
Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Washington, D.C..

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

All flight searches from Washington, D.C. to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and United Kingdom by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Washington, D.C. to United Kingdom now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to United Kingdom and let you know when they change.

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