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 and arriving from 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 15m.

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

238 flights are operational weekly from Washington, D.C. to United Kingdom as of August 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

What airlines fly to United Kingdom?

British Airways, United Airlines and Iberia 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 49% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 18 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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

As of August 2025, there are 34 flights per day flying from Washington, D.C. to United Kingdom. The most common time of day flights depart is 10:00PM, with 77% of flights taking off in the evening.

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 are refreshed on a daily basis.

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

There are 18 operators available for flights from Washington, D.C. to United Kingdom as of August 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 required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$181 Cheap Flights from Washington, D.C. to the United Kingdom in 2025

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:40 pm - 3:30 pmIAD-LGW

14h 50m1 stop

7:40 am - 6:30 pmLGW-IAD

15h 50m1 stop

$495

Find Deal

Mon, Dec 1 - Mon, Dec 8

10:05 pm - 9:40 pmIAD-LHR

18h 35m1 stop

6:40 am - 7:59 pmLHR-IAD

18h 19m1 stop

$495Scandinavian Airlines

Find Deal

Mon, Oct 13 - Mon, Oct 20

11:15 pm - 2:40 pmIAD-LGW

10h 25m1 stop

3:40 pm - 7:20 pmLGW-IAD

32h 40m1 stop

$555Icelandair

Find Deal

Sun, Oct 5 - Tue, Oct 14

11:15 pm - 2:40 pmIAD-LGW

10h 25m1 stop

3:40 pm - 7:20 pmLGW-IAD

32h 40m1 stop

$559Icelandair

Find Deal

Wed, Oct 8 - Tue, Oct 14

3:35 pm - 8:10 amDCA-LGW

11h 35m1 stop

3:05 pm - 10:57 pmLGW-DCA

12h 52m1 stop

$612British Airways

Find Deal

Tue, Sep 30 - Tue, Oct 7

3:35 pm - 8:10 amDCA-LGW

11h 35m1 stop

3:05 pm - 11:07 pmLGW-DCA

13h 02m1 stop

$616British Airways

Find Deal

Wed, Sep 10 - Wed, Oct 1

6:00 pm - 8:00 pmDCA-LGW

21h 00m2 stops

3:05 pm - 11:07 pmLGW-DCA

13h 02m1 stop

$623Iberia

Find Deal

Mon, Sep 8 - Fri, Sep 19

3:35 pm - 6:20 amDCA-LHR

9h 45m1 stop

11:30 am - 11:07 pmLHR-DCA

16h 37m2 stops

$631Iberia

Find Deal

Sun, Sep 7 - Tue, Sep 16

3:00 pm - 5:55 amDCA-LHR

9h 55m1 stop

9:30 am - 3:51 pmLHR-DCA

11h 21m1 stop

$636United Airlines

Find Deal

Sun, Sep 7 - Tue, Sep 16

7:25 pm - 10:10 amDCA-LHR

9h 45m1 stop

2:05 pm - 9:51 pmLHR-DCA

12h 46m1 stop

$640United Airlines

Find Deal

Mon, Sep 1 - Tue, Sep 9

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

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

KLM

Sep 7

DCA5:00 pmWashington, D.C. Reagan-National

10h 50m

1 stop

LHR8:50 amLondon Heathrow

Sep 16

LHR10:55 amLondon Heathrow

12h 02m

1 stop

DCA5:57 pmWashington, D.C. Reagan-National

$613

Find similar

KLM

Aug 25

BWI6:25 pmBaltimore/Washington

11h 45m

1 stop

LHR11:10 amLondon Heathrow

Sep 3

LHR9:20 amLondon Heathrow

14h 32m

1 stop

BWI6:52 pmBaltimore/Washington

$766

Find similar

Air Canada flights from Washington, D.C. to United Kingdom

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

Air Canada

Oct 5

DCA4:35 pmWashington, D.C. Reagan-National

12h 00m

1 stop

LHR9:35 amLondon Heathrow

Oct 14

LHR9:30 amLondon Heathrow

11h 21m

1 stop

DCA3:51 pmWashington, D.C. Reagan-National

$614

Find similar

Air Canada

Sep 7

DCA8:40 pmWashington, D.C. Reagan-National

32h 20m

1 stop

LHR10:00 amLondon Heathrow

Sep 16

LHR9:30 amLondon Heathrow

17h 21m

1 stop

DCA9:51 pmWashington, D.C. Reagan-National

$618

Find similar

Air Canada

Sep 3

DCA12:55 pmWashington, D.C. Reagan-National

14h 40m

1 stop

LHR8:35 amLondon Heathrow

Sep 17

LHR6:50 amLondon Heathrow

14h 01m

2 stops

DCA3:51 pmWashington, D.C. Reagan-National

$726

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.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 12/1

7:40 pm-3:30 pm

1 stop14h 50m

London Gatwick

Mon 12/8

7:40 am-6:30 pm

1 stop15h 50m

$495

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 10/13

10:05 pm-9:40 pm

1 stop18h 35m

London Heathrow

Mon 10/20

6:40 am-7:59 pm

1 stop18h 19m

$495

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 10/5

11:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Tue 10/14

3:40 pm-7:20 pm

1 stop32h 40m

$555

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 10/8

11:15 pm-2:40 pm

1 stop10h 25m

London Gatwick

Tue 10/14

3:40 pm-7:20 pm

1 stop32h 40m

$559

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 9/30

3:35 pm-8:10 am

1 stop11h 35m

London Gatwick

Tue 10/7

3:05 pm-10:57 pm

1 stop12h 52m

$612

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 9/10

3:35 pm-8:10 am

1 stop11h 35m

London Gatwick

Wed 10/1

3:05 pm-11:07 pm

1 stop13h 02m

$616

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 9/8

6:00 pm-8:00 pm

2 stops21h 00m

London Gatwick

Fri 9/19

3:05 pm-11:07 pm

1 stop13h 02m

$623

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 9/7

3:35 pm-6:20 am

1 stop9h 45m

London Heathrow

Tue 9/16

11:30 am-11:07 pm

2 stops16h 37m

$631

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 9/7

3:00 pm-5:55 am

1 stop9h 55m

London Heathrow

Tue 9/16

9:30 am-3:51 pm

1 stop11h 21m

$636

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 9/1

7:25 pm-10:10 am

1 stop9h 45m

London Heathrow

Tue 9/9

2:05 pm-9:51 pm

1 stop12h 46m

$640

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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?

In general, January is the cheapest month to fly from Washington, D.C. to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $644. If you aren’t able to travel to United Kingdom during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $651.

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 when prices can be found for as low as $757. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $902.

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

According to our data, the cheapest time of day to fly to United Kingdom is in the morning. momondo users have found flights departing from Washington, D.C. to United Kingdom in the morning for as low as $761. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the afternoon, with an average ticket price of $822. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $754 when searching weeks out. 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 $693 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 80% 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	$385
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. in the past 72 hours is $385. The best round-trip flight deal from Washington, D.C. to United Kingdom found on momondo in the last 72 hours is $573.

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

Direct flights go from Washington, D.C. 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. to United Kingdom?
Prices for flights from Washington, D.C. to United Kingdom are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to United Kingdom?
There are 18 operators available for flights from Washington, D.C. to United Kingdom as of August 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 required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Washington, D.C. to United Kingdom?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to United Kingdom is Boeing 777, representing 37.93% of all bookings. The subsequent popular models are Airbus A380-800 at 15.35%, Boeing 787-8 Dreamliner at 9.41%, and Airbus A380 at 6.02%.

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
JetBlue	PriceFrom $31	Free Cancellation	Rating 7.2 2,916 reviews	Search JetBlue flights
PLAY	PriceFrom $313	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.4 1,471 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $421	Free Cancellation	Rating 7.9 7,982 reviews	Search Delta flights
Icelandair	PriceFrom $433	Free Cancellation	Rating 7.0 529 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $441	Free Cancellation	Rating 7.1 1,956 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $447	Free Cancellation	Rating 6.8 7,337 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom $497	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $506	Free Cancellation	Rating 7.4 8,928 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?

It is quick and easy to find Washington, D.C. to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

momondo does allow users to show only those flights to United Kingdom from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to United Kingdom from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in the United Kingdom

Flights to Londonfrom $342

Flights to Manchesterfrom $383

Flights to Edinburghfrom $411

Flights to Birminghamfrom $429

Flights to Glasgowfrom $405

Flights to Belfastfrom $499

Flights to Newcastle upon Tynefrom $479

Flights to Bristolfrom $456

Flights to Invernessfrom $409

Flights to Liverpoolfrom $450

Flights to Aberdeenfrom $518

Flights to Leedsfrom $468

Washington, D.C. flight routes

Washington, D.C. Dulles Intl to Valparaiso Destin-Ft Walton Beach

Washington, D.C. Dulles Intl to Savannah/Hilton Head

Baltimore/Washington to Detroit Metropolitan Wayne County

Washington, D.C. Dulles Intl to Nashville Intl

Washington, D.C. Dulles Intl to South Bend/Michiana

Washington, D.C. Reagan-National to New York John F Kennedy Intl

Cheap flights from Washington, D.C. to the United Kingdom from $181

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

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

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

Air Canada flights from Washington, D.C. to United Kingdom

Our best Air Canada 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?

The cheapest day to depart from Washington, D.C. to United Kingdom is on a Wednesday when prices can be found for as low as $757. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $902.

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

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 80% on your flight if you consider stops on a Washington, D.C. to United Kingdom flight.

What airlines fly to United Kingdom?

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

As of August 2025, there are 34 flights per day flying from Washington, D.C. to United Kingdom. The most common time of day flights depart is 10:00PM, with 77% of flights taking off in the evening.

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

238 flights are operational weekly from Washington, D.C. to United Kingdom as of August 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off 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, organize 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