How many flights depart from Washington, D.C. to London Heathrow Airport on average per day?

30 flights are operational daily from Washington, D.C. to London Heathrow Airport as of July 2025. The most popular departure time for this route is 10:00PM, with 74% of flights per day taking off in the evening.

How many flights depart from Washington, D.C. to London Heathrow Airport on average per week?

As of July 2025, there are 212 flights per week flying from Washington, D.C. to London Heathrow Airport. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

What airlines fly to London Heathrow Airport?

British Airways, Iberia and United Airlines are the top three most popular airlines that fly to London Heathrow Airport 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 London Heathrow Airport. Keep in mind that there are 17 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. to London Heathrow?

JetBlue, Icelandair, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. to London Heathrow

How long does it take to fly to London Heathrow Airport?

On average, it takes 7h 05m to fly from Washington, D.C. to London Heathrow Airport if you fly out of Baltimore (the most popular airport in Washington, D.C.) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Washington, D.C. and into London Heathrow Airport, then the flight time is around 8h 15m.

When did momondo last update prices for flights from Washington, D.C. to London Heathrow Airport?

Prices for flights from Washington, D.C. to London Heathrow Airport were last updated today.

How many operators does momondo search for flights from Washington, D.C. to London Heathrow Airport?

As of July 2025, there are 17 operators available to choose from for flights from Washington, D.C. to London Heathrow Airport.

How old do you have to be to fly from Washington, D.C. to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The required travel and health documents for your London Heathrow Airport 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 London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$73 Cheap Flights from Washington, D.C. to London Heathrow Airport in 2025

Q: What is the typical price of a round-trip flight between Washington, D.C. and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $768 to $1,063. The lowest price recently found on this route was $73.

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Find the cheapest flights from Washington, D.C. to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:45 pm - 6:30 amDCA-LHR

9h 45m1 stop

8:25 am - 8:03 amLHR-DCA

28h 38m1 stop

$73JetBlue

Find Deal

Thu, Jul 31 - Mon, Aug 11

6:15 pm - 6:30 amDCA-LHR

31h 15m1 stop

8:25 am - 8:03 pmLHR-DCA

16h 38m1 stop

$75JetBlue

Find Deal

Sat, Aug 9 - Fri, Aug 15

7:00 pm - 11:45 amDCA-LHR

11h 45m1 stop

8:00 am - 2:22 pmLHR-DCA

11h 22m1 stop

$486United Airlines

Find Deal

Sun, Aug 10 - Tue, Aug 19

7:25 pm - 7:45 amIAD-LHR

7h 20mnonstop

6:10 am - 3:00 pmLHR-IAD

13h 50m1 stop

$490British Airways

Find Deal

Tue, Sep 23 - Tue, Oct 7

5:50 pm - 6:15 amIAD-LHR

7h 25mnonstop

6:10 am - 3:00 pmLHR-IAD

13h 50m1 stop

$491British Airways

Find Deal

Tue, Sep 23 - Tue, Oct 14

6:15 am - 7:10 amBWI-LHR

19h 55m2 stops

1:25 pm - 5:14 pmLHR-BWI

32h 49m2 stops

$507United Airlines

Find Deal

Wed, Nov 19 - Wed, Nov 26

5:30 pm - 7:50 amDCA-LHR

9h 20m1 stop

8:00 pm - 11:07 pmLHR-DCA

32h 07m2 stops

$510Iberia

Find Deal

Wed, Aug 27 - Thu, Sep 11

3:35 pm - 6:20 amDCA-LHR

9h 45m1 stop

8:55 am - 7:00 pmLHR-DCA

15h 05m1 stop

$521Iberia

Find Deal

Tue, Sep 9 - Thu, Sep 25

8:30 pm - 10:50 amBWI-LHR

10h 20m1 stop

12:15 pm - 6:30 pmLHR-BWI

11h 15m1 stop

$547Icelandair

Find Deal

Thu, Oct 30 - Sun, Nov 9

7:30 pm - 10:50 amBWI-LHR

10h 20m1 stop

12:15 pm - 6:30 pmLHR-BWI

11h 15m1 stop

$579Icelandair

Find Deal

Tue, Dec 2 - Sun, Dec 7

JetBlue flights from Washington, D.C. to London Heathrow Airport

Our best JetBlue deals on Washington, D.C. to London Heathrow Airport flight tickets

JetBlue

Jul 31

DCA3:45 pmWashington, D.C. Reagan-National

9h 45m

1 stop

LHR6:30 amLondon Heathrow

Aug 11

LHR8:25 amLondon Heathrow

28h 38m

1 stop

DCA8:03 amWashington, D.C. Reagan-National

$73

Find similar

JetBlue

Aug 9

DCA6:15 pmWashington, D.C. Reagan-National

31h 15m

1 stop

LHR6:30 amLondon Heathrow

Aug 15

LHR8:25 amLondon Heathrow

16h 38m

1 stop

DCA8:03 pmWashington, D.C. Reagan-National

$75

Find similar

JetBlue

Aug 5

DCA6:30 amWashington, D.C. Reagan-National

9h 15m

1 stop

LHR8:45 pmLondon Heathrow

Aug 9

LHR8:15 amLondon Heathrow

19h 43m

1 stop

DCA10:58 pmWashington, D.C. Reagan-National

$81

Find similar

United Airlines flights from Washington, D.C. to London Heathrow Airport

Our best United Airlines deals on Washington, D.C. to London Heathrow Airport flight tickets

United Airlines

Aug 10

DCA7:00 pmWashington, D.C. Reagan-National

11h 45m

1 stop

LHR11:45 amLondon Heathrow

Aug 19

LHR8:00 amLondon Heathrow

11h 22m

1 stop

DCA2:22 pmWashington, D.C. Reagan-National

$486

Find similar

United Airlines

Nov 19

BWI6:15 amBaltimore/Washington

19h 55m

2 stops

LHR7:10 amLondon Heathrow

Nov 26

LHR1:25 pmLondon Heathrow

32h 49m

2 stops

BWI5:14 pmBaltimore/Washington

$507

Find similar

United Airlines

Jul 30

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

14h 40m

1 stop

LHR8:35 amLondon Heathrow

Aug 8

LHR8:30 amLondon Heathrow

15h 32m

1 stop

DCA7:02 pmWashington, D.C. Reagan-National

$559

Find similar

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Washington, D.C. and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Washington, D.C., with most prices found around $682. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from Washington, D.C. to London Heathrow Airport during January average around $687.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $760. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $898.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Washington, D.C. to London Heathrow Airport in the morning for as low as $748. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $830.

What is the cheapest Washington, D.C. to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $760 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Washington, D.C. for as low as $691 on momondo.

What cabin class options are available on Washington, D.C. to London Heathrow flights?

There are 4 cabin classes available to choose from on Washington, D.C. to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Washington, D.C. to London Heathrow Airport flights are approximately 24% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to London Heathrow Airport (WAS to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to London Heathrow Airport

Best Price Found	$86
Fastest flight time	7h 20m
Direct flights	Mon, Tue, Wed, Thu, Fri and Sat

The best one-way flight to London Heathrow Airport from Washington, D.C. in the past 72 hours is $86. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $73.

The fastest flight from Washington, D.C. to London Heathrow Airport takes 7h 20m

Direct flights go from Washington, D.C. to London Heathrow Airport on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: United Airlines, Finnair and Aer Lingus.

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How far is Washington, D.C. to London Heathrow by plane?
Washington, D.C. and London Heathrow are 3649.4 mi apart from one another. 7h 20m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to London Heathrow Airport?
Prices for flights from Washington, D.C. to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to London Heathrow Airport?
As of July 2025, there are 17 operators available to choose from for flights from Washington, D.C. to London Heathrow Airport.
How old do you have to be to fly from Washington, D.C. to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport 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 London Heathrow Airport. 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 London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to London Heathrow Airport is Boeing 777, representing 37.63% of all bookings. The subsequent popular models are Airbus A380-800 at 19.24%, Boeing 787-8 Dreamliner at 10.17%, and Airbus A380 at 6.54%.
What is the most popular airline from Washington, D.C. to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to London Heathrow Airport is British Airways, representing 33% of all bookings. The subsequent popular airlines are Iberia at 17%, United Airlines at 14%, and Icelandair at 7%.

Best airlines flying from Washington, D.C. to London Heathrow Airport

Compare and see reviews for airlines that fly from Washington, D.C. to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
PLAY	PriceFrom $379	Free Cancellation	Rating 7.0 102 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.3 1,424 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $421	Free Cancellation	Rating 8.0 7,958 reviews	Search Delta flights
Icelandair	PriceFrom $433	Free Cancellation	Rating 7.0 518 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $486	Free Cancellation	Rating 7.1 1,922 reviews	Search TAP AIR PORTUGAL flights
Air Canada	PriceFrom $549	Free Cancellation	Rating 7.1 9,743 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $557	Free Cancellation	Rating 7.1 1,168 reviews	Search Aer Lingus flights
Virgin Atlantic	PriceFrom $562	Free Cancellation	Rating 7.4 655 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom $562	Free Cancellation	Rating 7.0 2,842 reviews	Search Iberia flights
SWISS	PriceFrom $572	Free Cancellation	Rating 7.5 1,661 reviews	Search SWISS flights

Delta Flights From Washington, D.C. to London Heathrow Airport
Delta flight deals from Washington, D.C. to London Heathrow Airport start from $421 round-trip. Over the 4 Delta flights for this route in a normal week, average airfare is usually $802 round-trip - but some users have found much cheaper deals with momondo.
Finnair Flights From Washington, D.C. to London Heathrow Airport
Across 1,316 Finnair reviews on momondo, the average score is 7.6/10. Finnair flies from Washington, D.C. to London Heathrow Airport about 13 times each week, with ticket deals ranging from $585 to $753. Price data is based on momondo searches in the last 72 hours.

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Richmond

Why use momondo?

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

Finding the right flight to London 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 London quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to London from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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

An easier way to manage your London Heathrow Airport 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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Flights to London Gatwick Airportfrom $344

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Flights to London Stansted Airportfrom $367

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Flights to Glasgow Intl Airportfrom $392

Flights to Belfast Intl Airportfrom $470

Flights to Belfast City Airportfrom $517

Cheap flights from Washington, D.C. to London from $73

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 7/31. 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. to London

Cheap round-trip flights

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JetBlue flights from Washington, D.C. to London Heathrow Airport

Our best JetBlue deals on Washington, D.C. to London Heathrow Airport flight tickets

United Airlines flights from Washington, D.C. to London Heathrow Airport

Our best United Airlines deals on Washington, D.C. to London Heathrow Airport flight tickets

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. to London Heathrow 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 typical price of a round-trip flight between Washington, D.C. and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $760. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $898.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Washington, D.C. to London Heathrow flight route?

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

How far in advance should I book a flight to London Heathrow Airport?

What cabin class options are available on Washington, D.C. to London Heathrow flights?

There are 4 cabin classes available to choose from on Washington, D.C. to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Washington, D.C. to London Heathrow Airport flights are approximately 24% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Washington, D.C. to London Heathrow?

JetBlue, Icelandair, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. to London Heathrow

What airlines fly to London Heathrow Airport?

How many flights depart from Washington, D.C. to London Heathrow Airport on average per day?

30 flights are operational daily from Washington, D.C. to London Heathrow Airport as of July 2025. The most popular departure time for this route is 10:00PM, with 74% of flights per day taking off in the evening.

How many flights depart from Washington, D.C. to London Heathrow Airport on average per week?

As of July 2025, there are 212 flights per week flying from Washington, D.C. to London Heathrow Airport. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

How long does it take to fly to London Heathrow Airport?

When to book flights from Washington, D.C. to London Heathrow Airport

Cheap Washington, D.C. to London Heathrow Airport (WAS to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to London Heathrow Airport

Best Price Found

Fastest flight time

Direct flights

How far is Washington, D.C. to London Heathrow by plane?

When did momondo last update prices for flights from Washington, D.C. to London Heathrow Airport?

How many operators does momondo search for flights from Washington, D.C. to London Heathrow Airport?

How old do you have to be to fly from Washington, D.C. to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

What is the most popular plane model from Washington, D.C. to London Heathrow Airport?

What is the most popular airline from Washington, D.C. to London Heathrow Airport?

Best airlines flying from Washington, D.C. to London Heathrow Airport

Compare and see reviews for airlines that fly from Washington, D.C. to London Heathrow Airport with momondo

Delta Flights From Washington, D.C. to London Heathrow Airport

Finnair Flights From Washington, D.C. to London Heathrow Airport

Traveling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London Heathrow Airport 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 London

Popular cities in the United Kingdom

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