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

226 flights are operational weekly from London to Washington, D.C. as of May 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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

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

Which airport is the most popular layover for flights between London and Washington, D.C.?

Dublin (DUB) was the most common stop: 43% of momondo users choosing 1-stop flights on this route connected there.

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

Historically, on average around 18% 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 127 minutes.

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

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

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

The number of flights available between London and Washington, D.C. is 32 per day as of May 2026. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

Which layover airport has the shortest connection time from London to Washington, D.C.?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 10m.

Which layover airport offers the lowest fares from London to Washington, D.C.?

Flights via Boston (BOS) offer the lowest average round-trip price of $436.

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

Lufthansa, SWISS, and JetBlue are the most popular carriers operating from London to Washington, D.C.

Which layover airport has the shortest travel time from London to Washington, D.C.?

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 11h 15m.

What airlines fly to Washington, D.C.?

British Airways, Lufthansa and Virgin Atlantic are the top three most popular airlines that fly to Washington, D.C. from London according to our data. British Airways is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 11 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from London to Washington, D.C. are updated daily.

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

As of May 2026, there are 11 operators available to choose from for flights from London to Washington, D.C..

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

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 London to Washington, D.C..

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

The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$161 Cheap Flights from London to Washington, D.C. in 2026

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4:00 pm - 8:35 pm

LGW

IAD

33h 35m

1 stop

10:30 pm - 3:45 pm

IAD

LGW

12h 15m

1 stop

$622TAP AIR PORTUGAL

Thu, Nov 5 - Sun, Nov 8

6:00 am - 8:35 pm

LHR

IAD

19h 35m

1 stop

10:30 pm - 5:30 pm

IAD

LHR

14h 00m

1 stop

$628TAP AIR PORTUGAL

Wed, Nov 4 - Sun, Nov 8

2:00 pm - 5:25 pm

LHR

IAD

8h 25mnonstop

5:45 pm - 6:20 am

IAD

LHR

7h 35mnonstop

$630British Airways

Fri, Jul 31 - Mon, Aug 17

11:05 am - 9:10 pm

LHR

DCA

15h 05m

1 stop

5:55 pm - 9:20 am

DCA

LHR

10h 25m

1 stop

$649United Airlines

Sat, Aug 1 - Tue, Aug 11

2:00 pm - 5:15 pm

LHR

BWI

8h 15mnonstop

9:30 pm - 9:50 am

BWI

LHR

7h 20mnonstop

$666British Airways

Wed, Sep 9 - Mon, Sep 21

4:20 pm - 10:59 pm

LHR

DCA

11h 39m

1 stop

6:02 am - 8:10 pm

DCA

LHR

9h 08m

1 stop

$676Virgin Atlantic

Wed, Aug 5 - Tue, Aug 11

11:05 am - 8:57 pm

LHR

BWI

14h 52m

1 stop

12:10 pm - 6:45 am

BWI

LHR

13h 35m

1 stop

$676United Airlines

Sat, Oct 3 - Sun, Oct 11

1:25 pm - 11:52 pm

LHR

DCA

15h 27m

1 stop

6:30 pm - 7:15 am

DCA

LHR

31h 45m

1 stop

$678Virgin Atlantic

Tue, Jul 21 - Sat, Jul 25

8:15 am - 5:49 pm

LHR

BWI

14h 34m

2 stops

9:30 pm - 9:50 am

BWI

LHR

7h 20mnonstop

$684American Airlines

Tue, Jul 7 - Wed, Jul 15

10:30 am - 12:14 am

LHR

BWI

18h 44m

2 stops

6:00 am - 9:40 am

BWI

LHR

22h 40m

2 stops

$691American Airlines

Wed, Jul 15 - Thu, Aug 27

Lufthansa flights from London to Washington, D.C.

Our best Lufthansa deals on London to Washington, D.C. flight tickets

Lufthansa

Sep 3

LHR7:25 amLondon Heathrow

12h 40m

1 stop

IAD3:05 pmWashington, D.C. Dulles Intl

Sep 14

IAD10:05 pmWashington, D.C. Dulles Intl

7h 35m

LHR10:40 amLondon Heathrow

$655

Lufthansa

Sep 1

LHR8:45 amLondon Heathrow

13h 00m

1 stop

IAD4:45 pmWashington, D.C. Dulles Intl

Sep 14

IAD6:35 pmWashington, D.C. Dulles Intl

7h 20m

LHR6:55 amLondon Heathrow

$665

Lufthansa

Jun 2

LCY9:15 amLondon City

11h 50m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

Jun 10

IAD3:25 pmWashington, D.C. Dulles Intl

12h 15m

1 stop

LCY8:40 amLondon City

$845

Icelandair flights from London to Washington, D.C.

Our best Icelandair deals on London to Washington, D.C. flight tickets

Icelandair

Sep 18

LGW3:40 pmLondon Gatwick

11h 35m

1 stop

IAD10:15 pmWashington, D.C. Dulles Intl

Sep 21

IAD8:30 pmWashington, D.C. Dulles Intl

13h 10m

1 stop

LGW2:40 pmLondon Gatwick

$631

Icelandair

Sep 15

LGW3:40 pmLondon Gatwick

11h 35m

1 stop

IAD10:15 pmWashington, D.C. Dulles Intl

Sep 25

IAD11:20 pmWashington, D.C. Dulles Intl

10h 20m

1 stop

LGW2:40 pmLondon Gatwick

$632

Icelandair

Sep 2

LHR1:05 pmLondon Heathrow

11h 15m

1 stop

IAD7:20 pmWashington, D.C. Dulles Intl

Sep 9

IAD8:30 pmWashington, D.C. Dulles Intl

10h 25m

1 stop

LHR11:55 amLondon Heathrow

$633

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 11/5

4:00 pm-8:35 pm

1 stop33h 35m

Washington, D.C. Dulles Intl

Sun 11/8

10:30 pm-3:45 pm

1 stop12h 15m

$622

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 11/4

6:00 am-8:35 pm

1 stop19h 35m

Washington, D.C. Dulles Intl

Sun 11/8

10:30 pm-5:30 pm

1 stop14h 00m

$628

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 7/31

2:00 pm-5:25 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Mon 8/17

5:45 pm-6:20 am

Nonstop7h 35m

$630

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 8/1

11:05 am-9:10 pm

1 stop15h 05m

Washington, D.C. Reagan-National

Tue 8/11

5:55 pm-9:20 am

1 stop10h 25m

$649

Quickest round-trip

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Wed 9/9

2:00 pm-5:15 pm

Nonstop8h 15m

Baltimore/Washington

Mon 9/21

9:30 pm-9:50 am

Nonstop7h 20m

$666

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 8/5

4:20 pm-10:59 pm

1 stop11h 39m

Washington, D.C. Reagan-National

Tue 8/11

6:02 am-8:10 pm

1 stop9h 08m

$676

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Sat 10/3

11:05 am-8:57 pm

1 stop14h 52m

Baltimore/Washington

Sun 10/11

12:10 pm-6:45 am

1 stop13h 35m

$676

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 7/21

1:25 pm-11:52 pm

1 stop15h 27m

Washington, D.C. Reagan-National

Sat 7/25

6:30 pm-7:15 am

1 stop31h 45m

$678

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Tue 7/7

8:15 am-5:49 pm

2 stops14h 34m

Baltimore/Washington

Wed 7/15

9:30 pm-9:50 am

Nonstop7h 20m

$684

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Wed 7/15

10:30 am-12:14 am

2 stops18h 44m

Baltimore/Washington

Thu 8/27

6:00 am-9:40 am

2 stops22h 40m

$691

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How to get the cheapest flight ticket from London 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

Layovers

Other information

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

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

The month of March is, on average, the cheapest month to fly to Washington, D.C. from London, with most prices found around $641. If you’re not able to fly to Washington, D.C. in March, then October is your next best option. Flight prices from London to Washington, D.C. during October average around $644.

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 is on a Thursday. momondo users have found tickets for Thursday departures for as low as $750. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London to Washington, D.C. for around $856.

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

At noon is the cheapest time of day to fly from London to Washington, D.C. when you can find flight prices for as low as $790. Flying to Washington, D.C. at noon 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 $815. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $730 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 for as low as $655 on momondo.

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

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

You could potentially save up to 20% on your flight if you consider stops on a London to Washington, D.C. flight.

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

As of May 2026, prices for London to Washington, D.C. flights are approximately 18% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London 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 to Washington, D.C. (LON to WAS) flight deals and tips

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

Best Price Found	$736
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from London in the past 72 hours is $736. The best round-trip flight deal from London to Washington, D.C. found on momondo in the last 72 hours is $734.

The fastest flight from London to Washington, D.C. takes 8h 00m

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

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

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Frequently asked questions about flying from London to Washington, D.C.

How far is London to Washington, D.C. by plane?
There are 3662.3 mi between London and Washington, D.C.. By plane, this route typically takes 8h 00m.
When did momondo last update prices for flights from London to Washington, D.C.?
Prices for flights from London to Washington, D.C. are updated daily.
How many operators does momondo search for flights from London to Washington, D.C.?
As of May 2026, there are 11 operators available to choose from for flights from London to Washington, D.C..
How old do you have to be to fly from London to Washington, D.C.?
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 London to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from London to Washington, D.C. is Boeing 777, representing 46.96% of all bookings. The subsequent popular models are Boeing 777-300ER at 15.56%, Boeing 787-9 Dreamliner at 14.86%, and Boeing 767-300 at 6.55%.
What is the most popular airline from London to Washington, D.C.?
Based on momondo bookings for flights between London and Washington, D.C., the leading airline is British Airways, making up 22% of the total bookings. Other popular airlines include Virgin Atlantic with 13%, United Airlines with 11%, and American Airlines with 10%.

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

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $320	Free Cancellation	Rating 7.9 8,445 reviews	Search Delta flights
Icelandair	PriceFrom $466	Free Cancellation	Rating 7.0 657 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $473	Free Cancellation	Rating 7.2 2,257 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $523	Free Cancellation	Rating 6.8 8,019 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $534	Free Cancellation	Rating 7.6 921 reviews	Search Austrian Airlines flights
American Airlines	PriceFrom $559	Free Cancellation	Rating 7.1 11,645 reviews	Search American Airlines flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,751 reviews	Search United Airlines flights
British Airways	PriceFrom $571	Free Cancellation	Rating 6.7 7,995 reviews	Search British Airways flights
Air Canada	PriceFrom $635	Free Cancellation	Rating 7.1 11,077 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $658	Free Cancellation	Rating 7.3 1,578 reviews	Search Aer Lingus flights

Delta Flights From London to Washington, D.C.
The lowest priced Delta flight from London to Washington, D.C. from the last 72 hours was $320. Generally, Delta has 7 flights on this route every week with an average price of $907. Delta is rated 7.9/10 by our users.
Austrian Airlines Flights From London to Washington, D.C.
Austrian Airlines (7.6/10 from 921 reviews) operates around 14 flights from London to Washington, D.C. in any given week. The average Austrian Airlines airfare for this route is around $743, with deals from around $534 rare but found on momondo. Referenced prices are for round-trip London to Washington, D.C. flight searches in the last 72 hours.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Gaithersburg

Colonial Beach

Fredericksburg

Silver Spring

Towson

Rockville

Manassas

Linthicum Heights

Tysons

Springfield

Bethesda

Fairfax

College Park

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

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?

Price alerts on flights to Washington, D.C. from London 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.

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Cheap flights from London to Washington, D.C. from $347

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington, D.C. departing on 9/4. 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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How to get the cheapest flight ticket from London to Washington, D.C.

What is the typical price of a round-trip flight between London 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 to Washington, D.C. flight route?

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

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

Can stopping save me money on London to Washington, D.C. flights?

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

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

What airlines fly to Washington, D.C.?

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

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

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

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

Which airport is the most popular layover for flights between London and Washington, D.C.?

Which layover airport offers the lowest fares from London to Washington, D.C.?

Which layover airport has the shortest travel time from London to Washington, D.C.?

Which layover airport has the shortest connection time from London to Washington, D.C.?

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

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

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

Cheap London to Washington, D.C. (LON to WAS) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying from London to Washington, D.C.

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

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

Delta Flights From London to Washington, D.C.

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

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

Why use momondo?

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

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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.

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

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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