What airlines fly to Washington, D.C.?

British Airways, United Airlines and Delta are the top three most popular airlines that fly to Washington, D.C. from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 13 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

29 flights are operational daily from London Heathrow Airport to Washington, D.C. as of July 2025. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.

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

TAP AIR PORTUGAL is the most popular carrier operating from London Heathrow to Washington, D.C.

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

205 flights are operational weekly from London Heathrow Airport to Washington, D.C. as of July 2025. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.

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

As of July 2025, there are 13 operators available to choose from for flights from London Heathrow Airport to Washington, D.C..

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$242 Cheap Flights from London Heathrow Airport to Washington, D.C. in 2025

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

Prices are currently low for flights on this route. Typical prices usually range from $789 to $1,186. The lowest price recently found on this route was $458.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:25 am - 6:05 pmLHR-DCA

14h 40m1 stop

1:44 pm - 6:30 amDCA-LHR

11h 46m1 stop

$458Icelandair

Find Deal

Wed, Jul 23 - Wed, Jul 30

8:00 am - 8:50 pmLHR-IAD

17h 50m1 stop

10:20 pm - 6:50 pmIAD-LHR

15h 30m1 stop

$459TAP AIR PORTUGAL

Find Deal

Thu, Sep 4 - Thu, Sep 11

11:55 am - 7:21 pmLHR-DCA

12h 26m1 stop

1:35 pm - 6:30 amDCA-LHR

11h 55m1 stop

$460Icelandair

Find Deal

Thu, Sep 11 - Wed, Sep 17

8:15 am - 10:58 pmLHR-DCA

19h 43m1 stop

6:25 am - 8:45 pmDCA-LHR

9h 20m1 stop

$462Icelandair

Find Deal

Fri, Aug 22 - Wed, Sep 3

8:25 am - 5:00 pmLHR-DCA

13h 35m1 stop

1:35 pm - 6:30 amDCA-LHR

11h 55m1 stop

$479JetBlue

Find Deal

Thu, Sep 11 - Sun, Sep 14

11:55 am - 10:59 pmLHR-DCA

16h 04m1 stop

1:35 pm - 6:30 amDCA-LHR

11h 55m1 stop

$480JetBlue

Find Deal

Sun, Aug 31 - Tue, Sep 9

7:05 am - 5:15 pmLHR-IAD

15h 10m2 stops

8:30 pm - 4:25 pmIAD-LHR

14h 55m2 stops

$555Scandinavian Airlines

Find Deal

Mon, Nov 24 - Sat, Dec 6

6:50 am - 3:31 pmLHR-DCA

13h 41m2 stops

4:10 pm - 7:10 amDCA-LHR

10h 00m1 stop

$573

Find Deal

Mon, Dec 1 - Mon, Dec 15

6:50 am - 3:31 pmLHR-DCA

13h 41m2 stops

6:00 am - 7:10 amDCA-LHR

20h 10m1 stop

$578

Find Deal

Mon, Nov 17 - Sat, Nov 29

8:55 am - 9:24 pmLHR-BWI

17h 29m2 stops

10:56 am - 7:10 amBWI-LHR

39h 14m2 stops

$653United Airlines

Find Deal

Tue, Nov 4 - Fri, Nov 7

TAP AIR PORTUGAL flights from London Heathrow Airport to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Washington, D.C. flight tickets

TAP AIR PORTUGAL

Sep 4

LHR8:00 amLondon Heathrow

17h 50m

1 stop

IAD8:50 pmWashington, D.C. Dulles Intl

Sep 11

IAD10:20 pmWashington, D.C. Dulles Intl

15h 30m

1 stop

LHR6:50 pmLondon Heathrow

$459

Find similar

TAP AIR PORTUGAL

Aug 24

LHR7:50 pmLondon Heathrow

24h 30m

1 stop

IAD3:20 pmWashington, D.C. Dulles Intl

Sep 9

IAD10:20 pmWashington, D.C. Dulles Intl

15h 30m

1 stop

LHR6:50 pmLondon Heathrow

$466

Find similar

TAP AIR PORTUGAL

Sep 4

LHR8:00 amLondon Heathrow

17h 50m

1 stop

IAD8:50 pmWashington, D.C. Dulles Intl

Sep 11

IAD10:20 pmWashington, D.C. Dulles Intl

18h 45m

1 stop

LHR10:05 pmLondon Heathrow

$468

Find similar

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

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

Scandinavian Airlines

Nov 24

LHR7:05 amLondon Heathrow

15h 10m

2 stops

IAD5:15 pmWashington, D.C. Dulles Intl

Dec 6

IAD8:30 pmWashington, D.C. Dulles Intl

14h 55m

2 stops

LHR4:25 pmLondon Heathrow

$555

Find similar

Scandinavian Airlines

Jul 24

LHR6:40 amLondon Heathrow

18h 19m

1 stop

IAD7:59 pmWashington, D.C. Dulles Intl

Sep 4

IAD10:05 pmWashington, D.C. Dulles Intl

30h 15m

1 stop

LHR9:20 amLondon Heathrow

$825

Find similar

Scandinavian Airlines

Jul 24

LHR7:05 amLondon Heathrow

17h 54m

2 stops

IAD7:59 pmWashington, D.C. Dulles Intl

Sep 4

IAD10:05 pmWashington, D.C. Dulles Intl

30h 15m

1 stop

LHR9:20 amLondon Heathrow

$854

Find similar

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

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 London Heathrow Airport and Washington, D.C.?

What is the cheapest month to fly to Washington, D.C.?

The month of February is, on average, the cheapest month to fly to Washington, D.C. from London Heathrow Airport, with most prices found around $698. If you’re not able to fly to Washington, D.C. in February, then March is your next best option. Flight prices from London Heathrow Airport to Washington, D.C. during March average around $711.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $822. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Washington, D.C. for around $947.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from London Heathrow Airport to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $888. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $822 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Heathrow Airport for as low as $732 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow to Washington, D.C. 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 London Heathrow Airport to Washington, D.C. flights?

You could potentially save up to 6% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. flight.

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

As of July 2025, prices for London Heathrow Airport to Washington, D.C. flights are approximately 51% more expensive when compared to flights at the same time last year.

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

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

Estimated round-trip price

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

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

Best Price Found	$242
Fastest flight time	11h 00m
Direct flights	Every day
Airports in Washington, D.C.	3 airports

The best one-way flight to Washington, D.C. from London Heathrow Airport in the past 72 hours is $242. The best round-trip flight deal from London Heathrow Airport to Washington, D.C. found on momondo in the last 72 hours is $458.

The fastest flight from London Heathrow Airport to Washington, D.C. takes 11h 00m

Direct flights go from London Heathrow Airport to Washington, D.C. every day.

There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)

Search flight deals

How far is London Heathrow to Washington, D.C. by plane?
The distance between London Heathrow and Washington, D.C. is about 3649.4 mi. A reasonable flight in good conditions will take 11h 02m.
When did momondo last update prices for flights from London Heathrow Airport to Washington, D.C.?
Prices for flights from London Heathrow Airport to Washington, D.C. are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Washington, D.C.?
As of July 2025, there are 13 operators available to choose from for flights from London Heathrow Airport to Washington, D.C..
How old do you have to be to fly from London Heathrow Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Washington, D.C. is Boeing 777, representing 29.07% of all bookings. The subsequent popular models are Airbus A380-800 at 14.93%, Airbus A330-300 at 9.94%, and Airbus A330-900neo at 9.15%.
What is the most popular airline from London Heathrow Airport to Washington, D.C.?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Washington, D.C. is British Airways, representing 29% of all bookings. The subsequent popular airlines are Icelandair at 11%, Delta at 11%, and United Airlines at 9%.

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

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

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $390	Free Cancellation	Rating 7.3 1,419 reviews	Search Scandinavian Airlines flights
PLAY	PriceFrom $392	Free Cancellation	Rating 7.0 102 reviews	Search PLAY flights
Austrian Airlines	PriceFrom $431	Free Cancellation	Rating 7.6 806 reviews	Search Austrian Airlines flights
Icelandair	PriceFrom $510	Free Cancellation	Rating 7.0 514 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $564	Free Cancellation	Rating 7.1 1,914 reviews	Search TAP AIR PORTUGAL flights
British Airways	PriceFrom $595	Free Cancellation	Rating 6.6 7,109 reviews	Search British Airways flights
American Airlines	PriceFrom $619	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Aer Lingus	PriceFrom $652	Free Cancellation	Rating 7.1 1,152 reviews	Search Aer Lingus flights
Delta	PriceFrom $652	Free Cancellation	Rating 8.0 7,952 reviews	Search Delta flights
United Airlines	PriceFrom $663	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights

Delta Flights From London Heathrow Airport to Washington, D.C.
Delta flies from London Heathrow Airport to Washington, D.C. around 5 times per week, with 7,952 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Washington, D.C. in the last 72 hours was $652 (round-trip), much lower than the average airfare cost of $1,000 for Delta flights on this route.
Austrian Airlines Flights From London Heathrow Airport to Washington, D.C.
Across 806 Austrian Airlines reviews on momondo, the average score is 7.6/10. Austrian Airlines flies from London Heathrow Airport to Washington, D.C. about 14 times each week, with ticket deals ranging from $431 to $985. Price data is based on momondo searches in the last 72 hours.

Alexandria

Gettysburg

Arlington

National Harbor

Laurel

Woodbridge

Tysons

Silver Spring

Waldorf

Fredericksburg

Manassas

Gaithersburg

Rockville

Towson

Fairfax

Colonial Beach

Glen Burnie

Linthicum Heights

Reston

Springfield

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Washington, D.C. for you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from London.

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

Yes momondo offers price alerts on flights to Washington, D.C. from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Tue 7/15

Tue 7/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Popular cities in the United States

Flights to New Yorkfrom $37

Flights to Los Angelesfrom $39

Flights to Miamifrom $38

Flights to Chicagofrom $58

Flights to Las Vegasfrom $16

Flights to Orlandofrom $36

Flights to San Franciscofrom $56

Flights to Bostonfrom $57

Flights to Dallasfrom $66

Flights to Atlantafrom $49

Flights to Seattlefrom $82

Flights to Denverfrom $73

Cheap flights from London Heathrow Airport to Washington, D.C. from $242

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

TAP AIR PORTUGAL flights from London Heathrow Airport to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Washington, D.C. flight tickets

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

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

See travel insights to Washington, D.C. from

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

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 London Heathrow Airport and Washington, D.C.?

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

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

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

How far in advance should I book a flight to Washington, D.C.?

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

There are 4 cabin classes available to choose from on London Heathrow to Washington, D.C. 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 London Heathrow Airport to Washington, D.C. flights?

You could potentially save up to 6% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. flight.

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

As of July 2025, prices for London Heathrow Airport to Washington, D.C. flights are approximately 51% more expensive when compared to flights at the same time last year.

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

TAP AIR PORTUGAL is the most popular carrier operating from London Heathrow to Washington, D.C.

What airlines fly to Washington, D.C.?

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

29 flights are operational daily from London Heathrow Airport to Washington, D.C. as of July 2025. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.

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

205 flights are operational weekly from London Heathrow Airport to Washington, D.C. as of July 2025. The most popular departure day for this route is Wed, with 16% of flights per week taking off on this day.

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

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

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

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

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

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

What documentation or ID do you need to fly to Washington, D.C.?

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

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

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

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

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

Austrian Airlines Flights From London Heathrow Airport to Washington, D.C.

Traveling to a place near Washington, D.C.?

Why use momondo?

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

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

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

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

An easier way to manage your Washington, D.C. 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 States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.