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

The number of flights available between London Heathrow Airport and Washington, D.C. is 23 per day as of January 2026. The most frequent departure time is 16:00, with 100% of daily flights leaving in the afternoon.

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

As of January 2026, 163 flights take off from London Heathrow Airport and land in Washington, D.C. each week. The most common flight departure day for this route is Wed, with 18% of weekly flights taking off on this day.

Which airline has the best punctuality record on London to Washington, D.C. flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

What is the most punctual flight time for London to Washington, D.C. flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

How often are flights from London to Washington, D.C. delayed?

Historically, on average around 17% of flights between London and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

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

United Airlines, British Airways, and Finnair are the most popular carriers operating from London Heathrow to Washington, D.C.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

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 refreshed on a daily basis.

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 stopovers. 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 travel and health documents required for your trip to Washington, D.C. 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 licence, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

€471 Cheap Flights from London Heathrow Airport to Washington, D.C. in 2026

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Cheap return flights

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12:15 - 18:40

LHR

BWI

11h 25m1 stop

19:40 - 10:50

BWI

LHR

10h 10m1 stop

€485Icelandair

Sat, 24 Jan - Tue, 10 Feb

12:00 - 18:55

LHR

IAD

11h 55m1 stop

19:15 - 07:45

IAD

LHR

7h 30mdirect

€499British Airways

Sat, 6 Jun - Sat, 13 Jun

08:40 - 20:27

LHR

BWI

16h 47m2 stops

17:36 - 12:05

BWI

LHR

13h 29m2 stops

€499Delta

Thu, 9 Apr - Mon, 13 Apr

11:05 - 10:46

LHR

BWI

27h 41m1 stop

17:20 - 05:30

BWI

LHR

32h 10m1 stop

€500Delta

Thu, 12 Mar - Sat, 28 Mar

12:15 - 15:30

LHR

IAD

8h 15mdirect

18:25 - 06:55

IAD

LHR

7h 30mdirect

€501Lufthansa

Tue, 21 Apr - Sun, 26 Apr

09:40 - 16:35

LHR

BWI

10h 55m1 stop

13:00 - 08:50

BWI

LHR

14h 50m2 stops

€501Delta

Sat, 14 Mar - Sat, 6 Jun

12:15 - 15:30

LHR

IAD

8h 15mdirect

18:25 - 06:55

IAD

LHR

7h 30mdirect

€502United Airlines

Tue, 28 Apr - Sat, 16 May

09:30 - 20:32

LHR

IAD

16h 02m1 stop

18:25 - 06:55

IAD

LHR

7h 30mdirect

€504United Airlines

Tue, 28 Apr - Sun, 10 May

11:30 - 22:54

LHR

BWI

16h 24m2 stops

13:00 - 07:10

BWI

LHR

13h 10m1 stop

€504Virgin Atlantic

Tue, 12 May - Tue, 19 May

11:30 - 22:54

LHR

BWI

16h 24m2 stops

18:10 - 11:20

BWI

LHR

12h 10m1 stop

€505Virgin Atlantic

Fri, 8 May - Mon, 18 May

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

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

Austrian Airlines

16 May

LHR16:40London Heathrow

8h 35m

IAD20:15Washington, D.C. Dulles Intl

31 May

IAD18:30Washington, D.C. Dulles Intl

7h 25m

LHR06:55London Heathrow

€518

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Austrian Airlines

30 Apr

LHR09:05London Heathrow

34h 30m

1 stop

IAD14:35Washington, D.C. Dulles Intl

19 May

IAD18:25Washington, D.C. Dulles Intl

7h 30m

LHR06:55London Heathrow

€531

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Austrian Airlines

10 Jan

LHR07:40London Heathrow

13h 20m

1 stop

IAD16:00Washington, D.C. Dulles Intl

21 Jan

IAD17:17Washington, D.C. Dulles Intl

12h 58m

1 stop

LHR11:15London Heathrow

€551

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British Airways flights from London Heathrow Airport to Washington, D.C.

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

British Airways

6 Jun

LHR12:00London Heathrow

11h 55m

1 stop

IAD18:55Washington, D.C. Dulles Intl

13 Jun

IAD19:15Washington, D.C. Dulles Intl

7h 30m

LHR07:45London Heathrow

€499

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British Airways

7 Mar

LHR12:10London Heathrow

8h 25m

IAD15:35Washington, D.C. Dulles Intl

12 Mar

IAD19:20Washington, D.C. Dulles Intl

7h 10m

LHR06:30London Heathrow

€507

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British Airways

28 Apr

LHR12:35London Heathrow

8h 15m

IAD15:50Washington, D.C. Dulles Intl

21 May

IAD17:40Washington, D.C. Dulles Intl

7h 40m

LHR06:20London Heathrow

€521

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momondo Fare Finder

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

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Route

Depart

Return

Price

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Sat 24/1

12:15-18:40

1 stop11h 25m

Baltimore/Washington

Tue 10/2

19:40-10:50

1 stop10h 10m

€485

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 6/6

12:00-18:55

1 stop11h 55m

Washington, D.C. Dulles Intl

Sat 13/6

19:15-07:45

Nonstop7h 30m

€499

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 9/4

08:40-20:27

2 stops16h 47m

Baltimore/Washington

Mon 13/4

17:36-12:05

2 stops13h 29m

€499

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 12/3

11:05-10:46

1 stop27h 41m

Baltimore/Washington

Sat 28/3

17:20-05:30

1 stop32h 10m

€500

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 21/4

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Sun 26/4

18:25-06:55

Nonstop7h 30m

€501

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Sat 14/3

09:40-16:35

1 stop10h 55m

Baltimore/Washington

Sat 6/6

13:00-08:50

2 stops14h 50m

€501

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 28/4

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Sat 16/5

18:25-06:55

Nonstop7h 30m

€502

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 28/4

09:30-20:32

1 stop16h 02m

Washington, D.C. Dulles Intl

Sun 10/5

18:25-06:55

Nonstop7h 30m

€504

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Tue 12/5

11:30-22:54

2 stops16h 24m

Baltimore/Washington

Tue 19/5

13:00-07:10

1 stop13h 10m

€504

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Fri 8/5

11:30-22:54

2 stops16h 24m

Baltimore/Washington

Mon 18/5

18:10-11:20

1 stop12h 10m

€505

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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

Delays

Other information

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

The cheapest month to fly to Washington, D.C. from London Heathrow Airport is in September. Flight prices, which tend to average around €552, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Washington, D.C. from London Heathrow Airport during November instead. Flights to Washington, D.C. in November, while not as cheap as those in September, still average around €565.

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 €650 when searching weeks before you fly. 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 €594 on momondo.

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

There is only 1 cabin class 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.

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

As of January 2026, prices for London Heathrow Airport to Washington, D.C. flights are approximately 39% 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 return 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.

Fastest flight time	8h 10m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The fastest flight from London Heathrow Airport to Washington, D.C. takes 8h 10m

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

There are 2 airports in Washington, D.C.. From London Heathrow Airport there are direct flights to Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).

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How far is London Heathrow to Washington, D.C. by plane?
Washington, D.C. is 5873.1 km away from London Heathrow. A reasonable flight in good conditions will take 8h 10m.
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 refreshed on a daily basis.
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 stopovers. 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 travel and health documents required for your trip to Washington, D.C. 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 licence, and a passport valid for six-months after you plan to arrive at Washington, D.C.. 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 London Heathrow Airport to Washington, D.C.?
Based on momondo bookings for flights between London Heathrow Airport and Washington, D.C., the leading plane model is Boeing 777, making up 28.34% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 14.49%, Airbus A350-1000 with 11.13%, and Boeing 767-400 with 9.59%.

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

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

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?

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

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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

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Flights to Houstonfrom €448

Cheap flights from London Heathrow Airport to Washington, D.C. from €471

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

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

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

British Airways flights from London Heathrow Airport to Washington, D.C.

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly 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 is only 1 cabin class 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.

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

As of January 2026, prices for London Heathrow Airport to Washington, D.C. flights are approximately 39% 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.?

United Airlines, British Airways, and Finnair are the most popular carriers operating from London Heathrow to Washington, D.C.

How often are flights from London to Washington, D.C. delayed?

Historically, on average around 17% of flights between London and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Washington, D.C. flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

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

The number of flights available between London Heathrow Airport and Washington, D.C. is 23 per day as of January 2026. The most frequent departure time is 16:00, with 100% of daily flights leaving in the afternoon.

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

As of January 2026, 163 flights take off from London Heathrow Airport and land in Washington, D.C. each week. The most common flight departure day for this route is Wed, with 18% of weekly flights 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.

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 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.?

Travelling 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, 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 States

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

Airports listed have a maximum distance of 36.1 km from Washington, D.C.