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

JetBlue is the most popular carrier operating from Washington, D.C. to London

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

84 flights are operational weekly from Washington, D.C. to London as of October 2025. The most popular departure day for this route is Thu, with 39% of flights per week taking off on this day.

How long does it take to fly to London?

Flight times from Washington, D.C. to London vary, but if you’re flying out of Baltimore and flying into London Heathrow Airport (one of the most popular routes), then the duration is 7h 05m on average. Another popular route from Washington, D.C. to London is flying from Washington, D.C. to London Heathrow Airport, which will take roughly 8h 06m. Keep in mind that layovers or delays could extend your travel time.

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

12 flights are operational daily from Washington, D.C. to London as of October 2025. The most popular departure time for this route is 22:00, with 83% of flights per day taking off in the evening.

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

Reykjavik (KEF) was the most common stop: 61% of momondo users choosing one-stop flights on this route connected there.

Which airlines fly to London?

British Airways, Virgin Atlantic and Icelandair 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 49% of people opting to fly with this airline when travelling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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

Flights via Dublin (DUB) offer the lowest average return price of £396.

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

Flights connecting via New York (JFK) have the shortest average one-way travel time: 9h 40m.

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

Prices for flights from Washington, D.C. to London are refreshed on a daily basis.

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

As of October 2025, there are 9 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?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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.

£130 Cheap Flights from Washington, D.C. to London in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise 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 return flights

Enter your travel dates to find the best prices.

20:30 - 20:30IAD-STN

19h 00m2 stops

12:00 - 16:40STN-IAD

33h 40m2 stops

£421Multiple Airlines

Find Deal

Tue, 25 Nov - Mon, 1 Dec

19:40 - 15:10IAD-LGW

14h 30m2 stops

08:50 - 18:30LGW-IAD

14h 40m2 stops

£421Multiple Airlines

Find Deal

Thu, 13 Nov - Tue, 18 Nov

14:55 - 07:50DCA-LHR

11h 55m1 stop

09:40 - 17:05LHR-DCA

12h 25m1 stop

£424Virgin Atlantic

Find Deal

Sun, 7 Dec - Sun, 14 Dec

22:20 - 10:50IAD-LHR

7h 30mdirect

06:20 - 19:15LHR-IAD

17h 55m1 stop

£433Virgin Atlantic

Find Deal

Tue, 2 Dec - Tue, 9 Dec

18:20 - 06:30IAD-LHR

7h 10mdirect

12:10 - 15:35LHR-IAD

8h 25mdirect

£435Iberia

Find Deal

Wed, 3 Dec - Wed, 10 Dec

21:45 - 10:00IAD-LHR

7h 15mdirect

16:25 - 19:55LHR-IAD

8h 30mdirect

£439British Airways

Find Deal

Wed, 10 Dec - Thu, 25 Dec

20:35 - 08:40BWI-LHR

7h 05mdirect

15:25 - 18:45LHR-BWI

8h 20mdirect

£439British Airways

Find Deal

Wed, 10 Dec - Thu, 18 Dec

18:20 - 06:30IAD-LHR

7h 10mdirect

12:10 - 15:35LHR-IAD

8h 25mdirect

£440Iberia

Find Deal

Wed, 7 Jan - Tue, 20 Jan

18:20 - 06:40IAD-LHR

7h 20mdirect

11:10 - 20:05LHR-IAD

13h 55m1 stop

£454United Airlines

Find Deal

Tue, 25 Nov - Wed, 3 Dec

09:45 - 07:10IAD-LHR

16h 25m1 stop

12:05 - 16:40LHR-IAD

33h 35m1 stop

£454United Airlines

Find Deal

Wed, 19 Nov - Mon, 24 Nov

Virgin Atlantic flights from Washington, D.C. to London

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

Virgin Atlantic

26 Oct

IAD23:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

4 Nov

LHR10:00London Heathrow

11h 05m

1 stop

IAD16:05Washington, D.C. Dulles Intl

£420

Find similar

Virgin Atlantic

26 Oct

IAD23:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

4 Nov

LHR11:30London Heathrow

12h 45m

1 stop

IAD19:15Washington, D.C. Dulles Intl

£421

Find similar

Virgin Atlantic

26 Oct

IAD23:20Washington, D.C. Dulles Intl

7h 30m

LHR10:50London Heathrow

4 Nov

LHR08:55London Heathrow

12h 40m

1 stop

IAD16:35Washington, D.C. Dulles Intl

£422

Find similar

JetBlue flights from Washington, D.C. to London

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

JetBlue

6 Dec

DCA06:00Washington, D.C. Reagan-National

11h 00m

1 stop

LHR22:00London Heathrow

13 Dec

LHR12:20London Heathrow

15h 38m

1 stop

DCA22:58Washington, D.C. Reagan-National

£472

Find similar

JetBlue

6 Nov

DCA09:50Washington, D.C. Reagan-National

16h 05m

1 stop

LHR06:55London Heathrow

14 Nov

LHR12:20London Heathrow

15h 39m

1 stop

DCA22:59Washington, D.C. Reagan-National

£480

Find similar

JetBlue

24 Oct

DCA17:20Washington, D.C. Reagan-National

11h 10m

1 stop

LHR09:30London Heathrow

17 Nov

LHR09:20London Heathrow

15h 32m

1 stop

DCA19:52Washington, D.C. Reagan-National

£481

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 25/11

20:30-20:30

2 stops19h 00m

London Stansted

Mon 1/12

12:00-16:40

2 stops33h 40m

£421

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 13/11

19:40-15:10

2 stops14h 30m

London Gatwick

Tue 18/11

08:50-18:30

2 stops14h 40m

£421

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 7/12

14:55-07:50

1 stop11h 55m

London Heathrow

Sun 14/12

09:40-17:05

1 stop12h 25m

£424

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 2/12

22:20-10:50

Nonstop7h 30m

London Heathrow

Tue 9/12

06:20-19:15

1 stop17h 55m

£433

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/12

18:20-06:30

Nonstop7h 10m

London Heathrow

Wed 10/12

12:10-15:35

Nonstop8h 25m

£435

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/12

21:45-10:00

Nonstop7h 15m

London Heathrow

Thu 25/12

16:25-19:55

Nonstop8h 30m

£439

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 10/12

20:35-08:40

Nonstop7h 05m

London Heathrow

Thu 18/12

15:25-18:45

Nonstop8h 20m

£439

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 7/1

18:20-06:30

Nonstop7h 10m

London Heathrow

Tue 20/1

12:10-15:35

Nonstop8h 25m

£440

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 25/11

18:20-06:40

Nonstop7h 20m

London Heathrow

Wed 3/12

11:10-20:05

1 stop13h 55m

£454

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 19/11

09:45-07:10

1 stop16h 25m

London Heathrow

Mon 24/11

12:05-16:40

1 stop33h 35m

£454

Flights are sorted by cheapest return 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

Stopovers

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 £472, 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 £490.

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

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £529. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to London for around £640.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £580. Flights at midday are often more expensive, with an average ticket price of £1,435.

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 £569 when searching weeks before you fly. 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 £529 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 42% 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 October 2025, prices for Washington, D.C. to London flights are approximately 149% 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 return 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	£279
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 £279. The best return flight deal from Washington, D.C. to London found on momondo in the last 72 hours is £463.

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. Airline offering direct flights is British Airways..

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

Search flight deals

How far is Washington, D.C. to London by plane?
There are 3662.3 mi between Washington, D.C. and London. 7h 05m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to London?
Prices for flights from Washington, D.C. to London are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to London?
As of October 2025, there are 9 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?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 flights between Washington, D.C. and London, the leading plane model is Boeing 777, making up 41.01% of the total bookings. Other popular models include Airbus A380-800 with 9.89%, Boeing 787-8 Dreamliner with 9.76%, and Airbus A350-1000 with 8.93%.
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 26% of all bookings. The subsequent popular airlines are Virgin Atlantic at 16%, Iberia at 14%, and United Airlines at 11%.

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
Lufthansa	PriceFrom £311	Free Cancellation	Rating 6.8 7,518 reviews	Search Lufthansa flights
Icelandair	PriceFrom £359	Free Cancellation	Rating 7.1 561 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £384	Free Cancellation	Rating 7.5 670 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £388	Free Cancellation	Rating 6.7 7,469 reviews	Search British Airways flights
Air France	PriceFrom £399	Free Cancellation	Rating 7.4 1,477 reviews	Search Air France flights
Iberia	PriceFrom £460	Free Cancellation	Rating 7.0 2,997 reviews	Search Iberia flights
KLM	PriceFrom £508	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
American Airlines	PriceFrom £514	Free Cancellation	Rating 7.2 11,033 reviews	Search American Airlines flights
United Airlines	PriceFrom £527	Free Cancellation	Rating 7.4 8,994 reviews	Search United Airlines flights

KLM Flights From Washington, D.C. to London
KLM flight deals from Washington, D.C. to London start from £508 round-trip. Over the 1 KLM flight for this route in a normal week, average airfare is usually £652 round-trip - but some users have found much cheaper deals with momondo.
Virgin Atlantic Flights From Washington, D.C. to London
Virgin Atlantic (7.5/10 from 670 reviews) operates around 1 flight from Washington, D.C. to London in any given week. The average Virgin Atlantic airfare for this route is around £641, with deals from around £384 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to London flight searches in the last 72 hours.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Dover

Hayes

Chelmsford

Worthing

Bedford

Dartford

Ramsgate

Stansted

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?

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 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 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 23/11

Sun 30/11

Email me momondo's favourite 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

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Popular Cities in the United Kingdom

Flights to Manchesterfrom £30

Flights to Birminghamfrom £34

Flights to Edinburghfrom £29

Flights to Belfastfrom £29

Flights to Glasgowfrom £30

Flights to Bristolfrom £31

Flights to Newcastle upon Tynefrom £31

Flights to Aberdeenfrom £46

Flights to Liverpoolfrom £31

Flights to Leedsfrom £67

Flights to Invernessfrom £38

Flights to Newquayfrom £34

Cheap flights from Washington, D.C. to London from £130

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 24/1. 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, great deals

Big names, great 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 return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Virgin Atlantic flights from Washington, D.C. to London

Our best Virgin Atlantic 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?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £529. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to London for around £640.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £580. Flights at midday are often more expensive, with an average ticket price of £1,435.

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 42% 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 October 2025, prices for Washington, D.C. to London flights are approximately 149% 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 is the most popular carrier operating from Washington, D.C. to London

Which airlines fly to London?

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

Reykjavik (KEF) was the most common stop: 61% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Dublin (DUB) offer the lowest average return price of £396.

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

Flights connecting via New York (JFK) have the shortest average one-way travel time: 9h 40m.

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

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

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

12 flights are operational daily from Washington, D.C. to London as of October 2025. The most popular departure time for this route is 22:00, with 83% of flights per day taking off in the evening.

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

84 flights are operational weekly from Washington, D.C. to London as of October 2025. The most popular departure day for this route is Thu, with 39% of flights per week taking off on this day.

How long does it take to fly to London?

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

KLM Flights From Washington, D.C. to London

Virgin Atlantic Flights From Washington, D.C. to London

Travelling 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, organise and travel with friends or family. Trips is free – and available to use no matter where you book.