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 week?

195 flights are operational weekly from Washington, D.C. to United Kingdom as of November 2025. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.

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 12m.

What airlines fly to United Kingdom?

British Airways, United Airlines 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 50% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 19 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 November 2025, there are 27 flights per day flying from Washington, D.C. to United Kingdom. The most common time of day flights depart is 10:00PM, with 100% 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 17 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 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.

$188 Cheap Flights from Washington, D.C. to the United Kingdom in 2025/26

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Cheap round-trip flights

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9:00 am - 10:40 pmIAD-STN

32h 40m3 stops

11:35 am - 4:40 pmSTN-IAD

34h 05m2 stops

$563Multiple Airlines

Find Deal

mié., nov. 26 - lun., dic. 1

7:40 pm - 10:55 amIAD-LGW

10h 15m1 stop

11:55 am - 6:30 pmLGW-IAD

11h 35m1 stop

$563Icelandair

Find Deal

lun., ene. 5 - lun., feb. 23

6:20 pm - 6:30 amIAD-LHR

7h 10mnonstop

12:10 pm - 3:35 pmLHR-IAD

8h 25mnonstop

$576British Airways

Find Deal

mar., dic. 2 - mar., dic. 9

6:20 pm - 6:30 amIAD-LHR

7h 10mnonstop

4:25 pm - 7:55 pmLHR-IAD

8h 30mnonstop

$577British Airways

Find Deal

mar., dic. 2 - mar., dic. 9

5:45 pm - 9:40 amDCA-LHR

10h 55m1 stop

11:25 am - 6:57 pmLHR-DCA

36h 32m2 stops

$577Iberia

Find Deal

mar., dic. 2 - mar., dic. 9

1:44 pm - 6:20 amDCA-LHR

11h 36m1 stop

10:35 am - 4:54 pmLHR-DCA

11h 19m1 stop

$595Iberia

Find Deal

dom., nov. 9 - mar., nov. 18

6:20 pm - 6:40 amIAD-LHR

7h 20mnonstop

6:50 am - 2:35 pmLHR-IAD

12h 45m1 stop

$603United Airlines

Find Deal

mar., dic. 2 - mar., dic. 9

12:42 pm - 8:30 amIAD-LHR

14h 48m2 stops

9:00 am - 4:40 pmLHR-IAD

12h 40m1 stop

$610United Airlines

Find Deal

mar., dic. 2 - jue., dic. 11

9:15 am - 9:00 amIAD-LGW

18h 45m2 stops

11:20 am - 8:44 amLGW-IAD

26h 24m2 stops

$610American Airlines

Find Deal

jue., dic. 4 - vie., dic. 12

6:24 am - 9:00 amIAD-LGW

21h 36m2 stops

11:20 am - 8:41 amLGW-IAD

26h 21m2 stops

$611American Airlines

Find Deal

dom., nov. 16 - mar., nov. 25

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

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

Delta

Dec 2

IAD10:20 pmWashington, D.C. Dulles Intl

7h 30m

LHR10:50 amLondon Heathrow

Dec 9

LHR9:00 amLondon Heathrow

12h 35m

1 stop

IAD4:35 pmWashington, D.C. Dulles Intl

$575

Find similar

Delta

Nov 16

IAD10:20 pmWashington, D.C. Dulles Intl

7h 30m

LHR10:50 amLondon Heathrow

Nov 25

LHR10:00 amLondon Heathrow

11h 05m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$576

Find similar

Delta

Dec 7

IAD10:20 pmWashington, D.C. Dulles Intl

7h 30m

LHR10:50 amLondon Heathrow

Dec 14

LHR6:30 amLondon Heathrow

14h 35m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$579

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

Dec 2

IAD6:20 pmWashington, D.C. Dulles Intl

7h 10m

LHR6:30 amLondon Heathrow

Dec 9

LHR12:10 pmLondon Heathrow

8h 25m

IAD3:35 pmWashington, D.C. Dulles Intl

$576

Find similar

British Airways

Dec 2

IAD6:20 pmWashington, D.C. Dulles Intl

7h 10m

LHR6:30 amLondon Heathrow

Dec 9

LHR4:25 pmLondon Heathrow

8h 30m

IAD7:55 pmWashington, D.C. Dulles Intl

$577

Find similar

British Airways

Feb 4

IAD6:20 pmWashington, D.C. Dulles Intl

7h 10m

LHR6:30 amLondon Heathrow

Feb 11

LHR12:10 pmLondon Heathrow

8h 25m

IAD3:35 pmWashington, D.C. Dulles Intl

$584

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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Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

mié. 11/26

9:00 am-10:40 pm

3 stops32h 40m

London Stansted

lun. 12/1

11:35 am-4:40 pm

2 stops34h 05m

$563

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

lun. 1/5

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

lun. 2/23

11:55 am-6:30 pm

1 stop11h 35m

$563

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

mar. 12/2

6:20 pm-6:30 am

Nonstop7h 10m

London Heathrow

mar. 12/9

12:10 pm-3:35 pm

Nonstop8h 25m

$576

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

mar. 12/2

6:20 pm-6:30 am

Nonstop7h 10m

London Heathrow

mar. 12/9

4:25 pm-7:55 pm

Nonstop8h 30m

$577

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

mar. 12/2

5:45 pm-9:40 am

1 stop10h 55m

London Heathrow

mar. 12/9

11:25 am-6:57 pm

2 stops36h 32m

$577

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

dom. 11/9

1:44 pm-6:20 am

1 stop11h 36m

London Heathrow

mar. 11/18

10:35 am-4:54 pm

1 stop11h 19m

$595

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

mar. 12/2

6:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

mar. 12/9

6:50 am-2:35 pm

1 stop12h 45m

$603

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

mar. 12/2

12:42 pm-8:30 am

2 stops14h 48m

London Heathrow

jue. 12/11

9:00 am-4:40 pm

1 stop12h 40m

$610

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

jue. 12/4

9:15 am-9:00 am

2 stops18h 45m

London Gatwick

vie. 12/12

11:20 am-8:44 am

2 stops26h 24m

$610

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

dom. 11/16

6:24 am-9:00 am

2 stops21h 36m

London Gatwick

mar. 11/25

11:20 am-8:41 am

2 stops26h 21m

$611

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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?

In general, September 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 $630. If you aren’t able to travel to United Kingdom during the month of September, then flying in January 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 $766. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $905.

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 evening. momondo users have found flights departing from Washington, D.C. to United Kingdom in the evening for as low as $818. 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 $823. 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 $759 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 $705 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 47% 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	$442
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 $442. The best round-trip flight deal from Washington, D.C. to United Kingdom found on momondo in the last 72 hours is $671.

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. There are no airlines offering direct flights.

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to United Kingdom?
There are 17 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 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 41.03% of all bookings. The subsequent popular models are Airbus A350-1000 at 9.99%, Airbus A380-800 at 9.51%, and Boeing 787-8 Dreamliner at 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
JetBlue	PriceFrom $31	Free Cancellation	Rating 7.2 2,908 reviews	Search JetBlue flights
Lufthansa	PriceFrom $311	Free Cancellation	Rating 6.8 7,553 reviews	Search Lufthansa flights
PLAY	PriceFrom $369	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
TAP AIR PORTUGAL	PriceFrom $395	Free Cancellation	Rating 7.1 2,046 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $424	Free Cancellation	Rating 7.4 1,560 reviews	Search Scandinavian Airlines flights
Icelandair	PriceFrom $432	Free Cancellation	Rating 7.1 571 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $497	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
United Airlines	PriceFrom $506	Free Cancellation	Rating 7.4 9,001 reviews	Search United Airlines flights
Aer Lingus	PriceFrom $517	Free Cancellation	Rating 7.2 1,365 reviews	Search Aer Lingus 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

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Popular cities in the United Kingdom

Flights to Londonfrom $313

Flights to Manchesterfrom $359

Flights to Edinburghfrom $406

Flights to Glasgowfrom $410

Flights to Birminghamfrom $404

Flights to Newcastle upon Tynefrom $464

Flights to Belfastfrom $509

Flights to Bristolfrom $431

Flights to Invernessfrom $418

Flights to Liverpoolfrom $460

Flights to Aberdeenfrom $501

Flights to Leedsfrom $504

Washington, D.C. flight routes

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Flights from Baltimore/Washington to Atlanta Hartsfield-Jackson

Cheap flights from Washington, D.C. to the United Kingdom from $188

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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?

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 $766. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $905.

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 47% 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

What airlines fly to United Kingdom?

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

As of November 2025, there are 27 flights per day flying from Washington, D.C. to United Kingdom. The most common time of day flights depart is 10:00PM, with 100% of flights taking off in the evening.

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

195 flights are operational weekly from Washington, D.C. to United Kingdom as of November 2025. The most popular departure day for this route is Tue, with 16% 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