What airlines fly to London?

British Airways, Iberia and United Airlines are the top three most popular airlines that fly to London from Washington, D.C. according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London. Keep in mind that there are 17 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

26 flights are operational daily from Washington, D.C. to London as of November 2025. The most popular departure time for this route is 10:00PM, with 100% of flights per day taking off in the evening.

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

Reykjavik (KEF) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

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

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

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

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 9h 20m.

How long does it take to fly to London?

If you’re flying from a popular airport in Washington, D.C., such as Baltimore or Washington, D.C., and flying into London, then you can expect flight times to average 7h 05m and 8h 12m, respectively.

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

As of November 2025, there are 182 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

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

Flights via Lisbon (LIS) offer the lowest average round-trip price of $445.

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

Amsterdam (AMS) has the shortest average layover time for this route: 0h 55m.

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

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

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

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

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to London.

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

The travel and health documents you'll need for your trip to London 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 London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$188 Cheap Flights from Washington, D.C. to London in 2025/26

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 Washington, D.C. to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:40 pm - 10:55 amIAD-LGW

10h 15m1 stop

11:55 am - 7:30 pmLGW-IAD

11h 35m1 stop

$561Icelandair

Find Deal

Fri, Mar 6 - Sun, Mar 15

7:40 pm - 7:30 pmIAD-LHR

18h 50m1 stop

12:15 pm - 6:30 pmLHR-IAD

11h 15m1 stop

$561Icelandair

Find Deal

Wed, Nov 12 - Thu, Nov 20

9:45 am - 10:40 pmIAD-STN

31h 55m2 stops

11:35 am - 4:40 pmSTN-IAD

34h 05m2 stops

$562Multiple Airlines

Find Deal

Mon, Nov 24 - Mon, Dec 1

9:45 pm - 10:00 amIAD-LHR

7h 15mnonstop

12:10 pm - 3:35 pmLHR-IAD

8h 25mnonstop

$576British Airways

Find Deal

Tue, Dec 2 - Tue, Dec 9

6:20 pm - 6:30 amIAD-LHR

7h 10mnonstop

4:25 pm - 7:55 pmLHR-IAD

8h 30mnonstop

$584British Airways

Find Deal

Wed, Jan 28 - Tue, Feb 3

7:25 pm - 12:00 pmBWI-LHR

11h 35m1 stop

3:25 pm - 6:45 pmLHR-BWI

8h 20mnonstop

$586American Airlines

Find Deal

Wed, Nov 12 - Fri, Dec 12

5:46 pm - 9:15 amBWI-LHR

10h 29m1 stop

3:25 pm - 6:45 pmLHR-BWI

8h 20mnonstop

$587American Airlines

Find Deal

Sun, Nov 9 - Thu, Dec 11

10:15 pm - 10:50 amIAD-LHR

7h 35mnonstop

9:00 am - 4:40 pmLHR-IAD

12h 40m1 stop

$603United Airlines

Find Deal

Tue, Dec 2 - Tue, Jan 13

1:10 pm - 11:15 amBWI-LHR

17h 05m1 stop

6:35 am - 9:08 pmLHR-BWI

19h 33m2 stops

$606United Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

5:45 pm - 10:10 pmDCA-LHR

23h 25m1 stop

5:00 pm - 6:56 pmLHR-DCA

30h 56m1 stop

$607Iberia

Find Deal

Sun, Nov 9 - Tue, Nov 18

Iberia flights from Washington, D.C. to London

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

Iberia

Nov 8

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

31h 30m

1 stop

LHR7:00 amLondon Heathrow

Nov 19

LHR6:45 pmLondon Heathrow

29h 11m

2 stops

DCA6:56 pmWashington, D.C. Reagan-National

$587

Find similar

Iberia

Nov 9

DCA5:45 pmWashington, D.C. Reagan-National

23h 25m

1 stop

LHR10:10 pmLondon Heathrow

Nov 18

LHR5:00 pmLondon Heathrow

30h 56m

1 stop

DCA6:56 pmWashington, D.C. Reagan-National

$607

Find similar

Iberia

Nov 8

DCA5:45 pmWashington, D.C. Reagan-National

23h 25m

1 stop

LHR10:10 pmLondon Heathrow

Nov 18

LHR5:00 pmLondon Heathrow

30h 56m

1 stop

DCA6:56 pmWashington, D.C. Reagan-National

$614

Find similar

JetBlue flights from Washington, D.C. to London

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

JetBlue

Nov 27

DCA1:55 pmWashington, D.C. Reagan-National

12h 00m

1 stop

LHR6:55 amLondon Heathrow

Dec 3

LHR9:20 amLondon Heathrow

15h 20m

1 stop

DCA7:40 pmWashington, D.C. Reagan-National

$612

Find similar

JetBlue

Feb 1

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

9h 30m

1 stop

LHR8:45 pmLondon Heathrow

Feb 7

LHR9:20 amLondon Heathrow

12h 44m

1 stop

DCA5:04 pmWashington, D.C. Reagan-National

$626

Find similar

JetBlue

Nov 14

DCA6:24 amWashington, D.C. Reagan-National

9h 21m

1 stop

LHR8:45 pmLondon Heathrow

Dec 4

LHR9:20 amLondon Heathrow

15h 20m

1 stop

DCA7:40 pmWashington, D.C. Reagan-National

$636

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 3/6

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

Sun 3/15

11:55 am-7:30 pm

1 stop11h 35m

$561

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 11/12

7:40 pm-7:30 pm

1 stop18h 50m

London Heathrow

Thu 11/20

12:15 pm-6:30 pm

1 stop11h 15m

$561

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 11/24

9:45 am-10:40 pm

2 stops31h 55m

London Stansted

Mon 12/1

11:35 am-4:40 pm

2 stops34h 05m

$562

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 12/2

9:45 pm-10:00 am

Nonstop7h 15m

London Heathrow

Tue 12/9

12:10 pm-3:35 pm

Nonstop8h 25m

$576

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 1/28

6:20 pm-6:30 am

Nonstop7h 10m

London Heathrow

Tue 2/3

4:25 pm-7:55 pm

Nonstop8h 30m

$584

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 11/12

7:25 pm-12:00 pm

1 stop11h 35m

London Heathrow

Fri 12/12

3:25 pm-6:45 pm

Nonstop8h 20m

$586

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 11/9

5:46 pm-9:15 am

1 stop10h 29m

London Heathrow

Thu 12/11

3:25 pm-6:45 pm

Nonstop8h 20m

$587

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 12/2

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Tue 1/13

9:00 am-4:40 pm

1 stop12h 40m

$603

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Thu 12/4

1:10 pm-11:15 am

1 stop17h 05m

London Heathrow

Wed 12/10

6:35 am-9:08 pm

2 stops19h 33m

$606

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 11/9

5:45 pm-10:10 pm

1 stop23h 25m

London Heathrow

Tue 11/18

5:00 pm-6:56 pm

1 stop30h 56m

$607

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Layovers

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Washington, D.C. is in September. Flight prices, which tend to average around $630, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Washington, D.C. averaging around $651.

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

The cheapest day to depart from Washington, D.C. to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $765. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $906. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $818 when looking at flights departing in the evening. Flights to London are more costly in the afternoon, with an average ticket price of $822. 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 London flight route?

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

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

You are more likely to see cheaper flights to London from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $759 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Washington, D.C. for as low as $705 on momondo.

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

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

You could potentially save up to 40% on your flight if you consider stops on a Washington, D.C. to London flight.

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

As of November 2025, prices for Washington, D.C. to London flights are approximately 9% more expensive when compared to flights at the same time last year.

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

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

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

Best Price Found	$442
Fastest flight time	7h 05m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in London	1 airport

The best one-way flight to London from Washington, D.C. in the past 72 hours is $442. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $671.

The fastest flight from Washington, D.C. to London takes 7h 05m

Direct flights go from Washington, D.C. to London on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport near London: London Heathrow (LHR)

Search flight deals

How far is Washington, D.C. to London by plane?
Washington, D.C. and London are 3662.3 mi apart from one another. A reasonable flight in good conditions will take 7h 05m.
When did momondo last update prices for flights from Washington, D.C. to London?
Prices for flights from Washington, D.C. to London were last updated today.
How many operators does momondo search for flights from Washington, D.C. to London?
As of November 2025, there are 17 operators available to choose from for flights from Washington, D.C. to London.
How old do you have to be to fly from Washington, D.C. to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London 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 London. 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 Washington, D.C. to London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. to London is Boeing 777 (41.43% of total bookings). The next most popular plane models are Airbus A350-1000 (10.09%), Airbus A380-800 (9.60%), and Boeing 787-8 Dreamliner (8.82%).
What is the most popular airline from Washington, D.C. to London?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to London is British Airways, representing 28% of all bookings. The subsequent popular airlines are Iberia at 14%, United Airlines at 14%, and Icelandair at 9%.

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

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $31	Free Cancellation	Rating 7.2 2,907 reviews	Search JetBlue 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
Lufthansa	PriceFrom $397	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
Scandinavian Airlines	PriceFrom $424	Free Cancellation	Rating 7.4 1,561 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 7.5 672 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 9,004 reviews	Search United Airlines flights
KLM	PriceFrom $520	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights

Delta Flights From Washington, D.C. to London
The lowest priced Delta flight from Washington, D.C. to London from the last 72 hours was $558. Generally, Delta has 5 flights on this route every week with an average price of $819. Delta is rated 7.9/10 by our users.
KLM Flights From Washington, D.C. to London
KLM (7.7/10 from 1,405 reviews) operates around 5 flights from Washington, D.C. to London in any given week. The average KLM airfare for this route is around $654, with deals from around $520 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to London flight searches in the last 72 hours.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Chelmsford

Wembley

Folkestone

Romford

Ilford

Cobham

Stansted

Harrow

Watford

Why use momondo?

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

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 London from Washington, D.C..

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

momondo does allow users to show only those flights to London 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 London?

momondo helps you find the best flight between Washington, D.C. and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to London from Washington, D.C.. 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 London 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

Sat 12/6

Sat 12/13

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 Kingdom

Cheap flights from Washington, D.C. to London from $188

This is the cheapest one-way 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 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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 Washington, D.C. to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Iberia flights from Washington, D.C. to London

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

JetBlue flights from Washington, D.C. to London

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

momondo Fare Finder

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

See travel insights to London from

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

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 London?

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

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

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

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

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

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

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

You could potentially save up to 40% on your flight if you consider stops on a Washington, D.C. to London flight.

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

As of November 2025, prices for Washington, D.C. to London flights are approximately 9% 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?

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

What airlines fly to London?

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

Reykjavik (KEF) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Lisbon (LIS) offer the lowest average round-trip price of $445.

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

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 9h 20m.

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

Amsterdam (AMS) has the shortest average layover time for this route: 0h 55m.

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

26 flights are operational daily from Washington, D.C. to London as of November 2025. The most popular departure time for this route is 10:00PM, with 100% of flights per day taking off in the evening.

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

As of November 2025, there are 182 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

How long does it take to fly to London?

If you’re flying from a popular airport in Washington, D.C., such as Baltimore or Washington, D.C., and flying into London, then you can expect flight times to average 7h 05m and 8h 12m, respectively.

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

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in London

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

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

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

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

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

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

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

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

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

Delta Flights From Washington, D.C. to London

KLM Flights From Washington, D.C. to London

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 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