What is the cheapest airline that flies from Washington, D.C. to United Kingdom?

JetBlue is the most popular carrier operating from Washington, D.C. to United Kingdom

How many flights depart from Washington, D.C. to United Kingdom on average per day?

The number of flights available between Washington, D.C. and United Kingdom is 28 per day as of November 2025. The most frequent departure time is 22:00, with 100% of daily flights leaving in the evening.

How many flights depart from Washington, D.C. to United Kingdom on average per week?

The number of flights available between Washington, D.C. and United Kingdom is 199 per week as of November 2025. The most frequent departure day is Sun, with 18% of weekly flights leaving on this day.

Which airlines fly to United Kingdom?

British Airways, Virgin Atlantic and Icelandair are the top three most popular airlines that fly to United Kingdom from Washington, D.C. according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 10 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

How long is the flight from Washington, D.C. to United Kingdom?

The flight from Washington, D.C. to United Kingdom depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Baltimore (a popular airport in Washington, D.C.) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 7h 05m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to London Heathrow Airport, then the average flight time is 8h 12m.

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

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

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

There are 9 operators available for flights from Washington, D.C. to United Kingdom as of November 2025.

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

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 Washington, D.C. to United Kingdom.

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

The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£143 Cheap Flights from Washington, D.C. to the United Kingdom in 2025/26

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09:00 - 22:40IAD-STN

32h 40m3 stops

11:35 - 16:40STN-IAD

34h 05m2 stops

£429Multiple Airlines

Find Deal

Wed, 26 Nov - Mon, 1 Dec

19:40 - 10:55IAD-LGW

10h 15m1 stop

11:55 - 18:30LGW-IAD

11h 35m1 stop

£429Icelandair

Find Deal

Mon, 5 Jan - Mon, 23 Feb

12:30 - 09:35IAD-LHR

16h 05m2 stops

07:05 - 16:50LHR-IAD

14h 45m2 stops

£429Scandinavian Airlines

Find Deal

Wed, 1 Apr - Wed, 29 Apr

22:20 - 10:50IAD-LHR

7h 30mdirect

08:40 - 16:05LHR-IAD

12h 25m1 stop

£429Virgin Atlantic

Find Deal

Sun, 30 Nov - Sun, 7 Dec

22:20 - 10:50IAD-LHR

7h 30mdirect

11:30 - 19:15LHR-IAD

12h 45m1 stop

£438Virgin Atlantic

Find Deal

Tue, 2 Dec - Tue, 9 Dec

18:20 - 06:30IAD-LHR

7h 10mdirect

16:25 - 19:55LHR-IAD

8h 30mdirect

£439British Airways

Find Deal

Tue, 2 Dec - Tue, 9 Dec

17:45 - 09:40DCA-LHR

10h 55m1 stop

11:25 - 18:57LHR-DCA

36h 32m2 stops

£439Iberia

Find Deal

Tue, 2 Dec - Tue, 9 Dec

20:35 - 08:40BWI-LHR

7h 05mdirect

15:25 - 18:45LHR-BWI

8h 20mdirect

£445British Airways

Find Deal

Tue, 27 Jan - Tue, 10 Feb

18:20 - 06:40IAD-LHR

7h 20mdirect

06:50 - 14:35LHR-IAD

12h 45m1 stop

£459United Airlines

Find Deal

Tue, 2 Dec - Tue, 9 Dec

17:18 - 11:15BWI-LHR

12h 57m1 stop

09:00 - 21:08LHR-BWI

17h 08m2 stops

£463United Airlines

Find Deal

Wed, 10 Dec - Tue, 16 Dec

Delta flights from Washington, D.C. to United Kingdom

Our best Delta deals on Washington, D.C. to United Kingdom flight tickets

Delta

11 Nov

IAD22:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

19 Nov

LHR09:00London Heathrow

12h 35m

1 stop

IAD16:35Washington, D.C. Dulles Intl

£438

Find similar

Delta

9 Dec

IAD22:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

15 Dec

LHR11:45London Heathrow

33h 20m

1 stop

IAD16:05Washington, D.C. Dulles Intl

£438

Find similar

Delta

7 Dec

IAD22:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

14 Dec

LHR06:30London Heathrow

14h 35m

1 stop

IAD16:05Washington, D.C. Dulles Intl

£441

Find similar

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

Our best British Airways deals on Washington, D.C. to United Kingdom flight tickets

British Airways

2 Dec

IAD18:20Washington, D.C. Dulles Intl

7h 10m

LHR06:30London Heathrow

9 Dec

LHR16:25London Heathrow

8h 30m

IAD19:55Washington, D.C. Dulles Intl

£439

Find similar

British Airways

28 Jan

IAD21:45Washington, D.C. Dulles Intl

7h 15m

LHR10:00London Heathrow

3 Feb

LHR12:10London Heathrow

8h 25m

IAD15:35Washington, D.C. Dulles Intl

£445

Find similar

British Airways

5 Jan

IAD21:45Washington, D.C. Dulles Intl

7h 15m

LHR10:00London Heathrow

20 Feb

LHR12:10London Heathrow

8h 25m

IAD15:35Washington, D.C. Dulles Intl

£449

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to the United Kingdom that are best for you.

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Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 26/11

09:00-22:40

3 stops32h 40m

London Stansted

Mon 1/12

11:35-16:40

2 stops34h 05m

£429

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 5/1

19:40-10:55

1 stop10h 15m

London Gatwick

Mon 23/2

11:55-18:30

1 stop11h 35m

£429

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 1/4

12:30-09:35

2 stops16h 05m

London Heathrow

Wed 29/4

07:05-16:50

2 stops14h 45m

£429

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 30/11

22:20-10:50

Nonstop7h 30m

London Heathrow

Sun 7/12

08:40-16:05

1 stop12h 25m

£429

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 2/12

22:20-10:50

Nonstop7h 30m

London Heathrow

Tue 9/12

11:30-19:15

1 stop12h 45m

£438

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 2/12

18:20-06:30

Nonstop7h 10m

London Heathrow

Tue 9/12

16:25-19:55

Nonstop8h 30m

£439

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 2/12

17:45-09:40

1 stop10h 55m

London Heathrow

Tue 9/12

11:25-18:57

2 stops36h 32m

£439

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Tue 27/1

20:35-08:40

Nonstop7h 05m

London Heathrow

Tue 10/2

15:25-18:45

Nonstop8h 20m

£445

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 2/12

18:20-06:40

Nonstop7h 20m

London Heathrow

Tue 9/12

06:50-14:35

1 stop12h 45m

£459

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 10/12

17:18-11:15

1 stop12h 57m

London Heathrow

Tue 16/12

09:00-21:08

2 stops17h 08m

£463

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. 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

Prices

Airlines

Other information

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from Washington, D.C. is in September. Flight prices, which tend to average around £480, 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 September, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around £496.

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

The cheapest day to depart from Washington, D.C. 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 £531. 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. to United Kingdom for around £652.

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 £588. Try not to purchase tickets in the afternoon because they tend to be around £597. 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. to United Kingdom flight route?

Fly from Washington, D.C. Dulles Intl to London Heathrow for the best Washington, D.C. - 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. when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £578 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. for as low as £537 on momondo.

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

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

You could potentially save up to 42% on your flight if you consider stops on a Washington, D.C. to United Kingdom flight.

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

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

Best price found	£293
Fastest flight time	7h 05m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in United Kingdom	1 airport

The best one-way flight to United Kingdom from Washington, D.C. in the past 72 hours is £293. The best return flight deal from Washington, D.C. to United Kingdom found on momondo in the last 72 hours is £482.

The fastest flight from Washington, D.C. to United Kingdom takes 7h 05m

Direct flights go from Washington, D.C. to United Kingdom on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. Airline offering direct flights is British Airways..

There is 1 airport near United Kingdom: London Heathrow (LHR)

Search flight deals

When did momondo last update prices for flights from Washington, D.C. to United Kingdom?
Prices for flights from Washington, D.C. to United Kingdom refresh daily.
How many operators does momondo search for flights from Washington, D.C. to United Kingdom?
There are 9 operators available for flights from Washington, D.C. to United Kingdom as of November 2025.
How old do you have to be to fly from Washington, D.C. to United Kingdom?
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 Washington, D.C. to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Washington, D.C. to United Kingdom?
Based on momondo bookings for flights between Washington, D.C. and United Kingdom, the leading plane model is Boeing 777, making up 41.03% of the total bookings. Other popular models include Airbus A350-1000 with 9.99%, Airbus A380-800 with 9.51%, and Boeing 787-8 Dreamliner with 8.73%.

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

Compare and see reviews for airlines that fly from Washington, D.C. to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom £316	Free Cancellation	Rating 6.8 7,547 reviews	Search Lufthansa flights
Icelandair	PriceFrom £344	Free Cancellation	Rating 7.1 568 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £390	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £394	Free Cancellation	Rating 6.7 7,495 reviews	Search British Airways flights
Air France	PriceFrom £405	Free Cancellation	Rating 7.4 1,482 reviews	Search Air France flights
Aer Lingus	PriceFrom £451	Free Cancellation	Rating 7.2 1,365 reviews	Search Aer Lingus flights
Iberia	PriceFrom £467	Free Cancellation	Rating 7.0 3,006 reviews	Search Iberia flights
KLM	PriceFrom £516	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
American Airlines	PriceFrom £522	Free Cancellation	Rating 7.2 11,038 reviews	Search American Airlines flights
United Airlines	PriceFrom £534	Free Cancellation	Rating 7.4 8,999 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?

Finding the right flight to United Kingdom from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to United Kingdom from Washington, D.C. with this policy.

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

Once you have performed a search for Washington, D.C. to United Kingdom flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Washington, D.C. to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your United Kingdom trip

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Popular Cities in the United Kingdom

Flights to Londonfrom £34

Flights to Manchesterfrom £33

Flights to Birminghamfrom £34

Flights to Edinburghfrom £32

Flights to Belfastfrom £30

Flights to Glasgowfrom £34

Flights to Bristolfrom £30

Flights to Newcastle upon Tynefrom £30

Flights to Aberdeenfrom £46

Flights to Liverpoolfrom £34

Flights to Leedsfrom £43

Flights to Invernessfrom £37

Cheap flights from Washington, D.C. to the United Kingdom from £143

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Find the cheapest flights from Washington, D.C. to the United Kingdom

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Delta flights from Washington, D.C. to United Kingdom

Our best Delta deals on Washington, D.C. to United Kingdom flight tickets

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

Our best British Airways deals on Washington, D.C. to United Kingdom flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to the United Kingdom that are best for you.

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Washington, D.C. 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?

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

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 £588. Try not to purchase tickets in the afternoon because they tend to be around £597. 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. to United Kingdom flight route?

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

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

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

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

You could potentially save up to 42% on your flight if you consider stops on a Washington, D.C. to United Kingdom flight.

What is the cheapest airline that flies from Washington, D.C. to United Kingdom?

JetBlue is the most popular carrier operating from Washington, D.C. to United Kingdom

Which airlines fly to United Kingdom?

How many flights depart from Washington, D.C. to United Kingdom on average per day?

The number of flights available between Washington, D.C. and United Kingdom is 28 per day as of November 2025. The most frequent departure time is 22:00, with 100% of daily flights leaving in the evening.

How many flights depart from Washington, D.C. to United Kingdom on average per week?

The number of flights available between Washington, D.C. and United Kingdom is 199 per week as of November 2025. The most frequent departure day is Sun, with 18% of weekly flights leaving on this day.

How long is the flight from Washington, D.C. to United Kingdom?

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

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

Best price found

Fastest flight time

Direct flights

Airports in United Kingdom

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

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

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

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. to United Kingdom with momondo

Why use momondo?

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

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

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

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

An easier way to manage your United Kingdom 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo