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

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

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 44% 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 has the shortest travel time from Washington, D.C. to London?

Flights connecting via Boston (BOS) have the shortest average one-way travel time: 9h 25m.

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

28 flights are operational daily from Washington, D.C. to London as of September 2025. The most popular departure time for this route is 22:00, with 76% of flights per day taking off in the evening.

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

Flights via Dublin (DUB) offer the lowest average return price of £353.

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

Reykjavik (KEF) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

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 25m. Keep in mind that layovers or delays could extend your travel time.

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 September 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.

£127 Cheap Flights from Washington, D.C. to London in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from £405 to £539. The lowest price recently found on this route was £357.

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

Round-trip

One-way

Last minute

Direct

Cheap return flights

19:40 - 18:20IAD-STN

17h 40m2 stops

06:30 - 18:30STN-IAD

17h 00m2 stops

£357Multiple Airlines

Find Deal

Fri, 14 Nov - Sat, 22 Nov

20:30 - 12:55IAD-LHR

35h 25m2 stops

06:40 - 18:50LHR-IAD

17h 10m2 stops

£358Scandinavian Airlines

Find Deal

Wed, 12 Nov - Sat, 15 Nov

23:15 - 14:40IAD-LGW

10h 25m1 stop

15:40 - 19:20LGW-IAD

32h 40m1 stop

£359Icelandair

Find Deal

Wed, 1 Oct - Tue, 7 Oct

23:15 - 11:55IAD-LHR

31h 40m1 stop

13:05 - 19:20LHR-IAD

11h 15m1 stop

£359Icelandair

Find Deal

Sun, 28 Sep - Tue, 7 Oct

17:50 - 06:20IAD-LHR

7h 30mdirect

09:00 - 16:20LHR-IAD

12h 20m1 stop

£393Virgin Atlantic

Find Deal

Sun, 28 Sep - Tue, 7 Oct

20:40 - 13:30DCA-LHR

11h 50m1 stop

12:45 - 19:40LHR-DCA

11h 55m1 stop

£394Virgin Atlantic

Find Deal

Sun, 28 Sep - Tue, 7 Oct

06:29 - 08:20BWI-LHR

20h 51m1 stop

16:00 - 09:55LHR-BWI

22h 55m2 stops

£406United Airlines

Find Deal

Sun, 5 Oct - Tue, 14 Oct

15:00 - 05:55DCA-LHR

9h 55m1 stop

12:00 - 21:37LHR-DCA

14h 37m1 stop

£408United Airlines

Find Deal

Mon, 6 Oct - Wed, 22 Oct

21:35 - 09:50BWI-LHR

7h 15mdirect

15:25 - 18:45LHR-BWI

8h 20mdirect

£426British Airways

Find Deal

Mon, 13 Oct - Wed, 3 Dec

21:35 - 09:50BWI-LHR

7h 15mdirect

16:35 - 19:45LHR-BWI

8h 10mdirect

£427British Airways

Find Deal

Mon, 13 Oct - Fri, 24 Oct

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

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

Scandinavian Airlines

12 Nov

IAD20:30Washington, D.C. Dulles Intl

35h 25m

2 stops

LHR12:55London Heathrow

15 Nov

LHR06:40London Heathrow

17h 10m

2 stops

IAD18:50Washington, D.C. Dulles Intl

£358

Find similar

Scandinavian Airlines

12 Nov

IAD20:30Washington, D.C. Dulles Intl

35h 25m

2 stops

LHR12:55London Heathrow

15 Nov

LHR10:20London Heathrow

13h 30m

1 stop

IAD18:50Washington, D.C. Dulles Intl

£359

Find similar

Scandinavian Airlines

26 Jan

IAD12:30Washington, D.C. Dulles Intl

15h 50m

2 stops

LHR09:20London Heathrow

2 Feb

LHR10:20London Heathrow

11h 55m

1 stop

IAD17:15Washington, D.C. Dulles Intl

£361

Find similar

Icelandair flights from Washington, D.C. to London

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

Icelandair

28 Sept

IAD23:15Washington, D.C. Dulles Intl

31h 40m

1 stop

LHR11:55London Heathrow

7 Oct

LHR13:05London Heathrow

11h 15m

1 stop

IAD19:20Washington, D.C. Dulles Intl

£359

Find similar

Icelandair

1 Oct

IAD20:30Washington, D.C. Dulles Intl

10h 25m

1 stop

LHR11:55London Heathrow

8 Oct

LHR21:25London Heathrow

26h 55m

1 stop

IAD19:20Washington, D.C. Dulles Intl

£360

Find similar

Icelandair

1 Oct

IAD20:30Washington, D.C. Dulles Intl

13h 10m

1 stop

LGW14:40London Gatwick

15 Oct

LGW15:40London Gatwick

11h 30m

1 stop

IAD22:10Washington, D.C. Dulles Intl

£361

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 14/11

19:40-18:20

2 stops17h 40m

London Stansted

Sat 22/11

06:30-18:30

2 stops17h 00m

£357

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 12/11

20:30-12:55

2 stops35h 25m

London Heathrow

Sat 15/11

06:40-18:50

2 stops17h 10m

£358

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 1/10

23:15-14:40

1 stop10h 25m

London Gatwick

Tue 7/10

15:40-19:20

1 stop32h 40m

£359

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 28/9

23:15-11:55

1 stop31h 40m

London Heathrow

Tue 7/10

13:05-19:20

1 stop11h 15m

£359

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 28/9

17:50-06:20

Nonstop7h 30m

London Heathrow

Tue 7/10

09:00-16:20

1 stop12h 20m

£393

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 28/9

20:40-13:30

1 stop11h 50m

London Heathrow

Tue 7/10

12:45-19:40

1 stop11h 55m

£394

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 5/10

06:29-08:20

1 stop20h 51m

London Heathrow

Tue 14/10

16:00-09:55

2 stops22h 55m

£406

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 6/10

15:00-05:55

1 stop9h 55m

London Heathrow

Wed 22/10

12:00-21:37

1 stop14h 37m

£408

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 13/10

21:35-09:50

Nonstop7h 15m

London Heathrow

Wed 3/12

15:25-18:45

Nonstop8h 20m

£426

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 13/10

21:35-09:50

Nonstop7h 15m

London Heathrow

Fri 24/10

16:35-19:45

Nonstop8h 10m

£427

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

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 £466, 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 £479.

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 £511. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to London for around £620.

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 £561. Flights at midday are often more expensive, with an average ticket price of £1,403.

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

Fly from Baltimore/Washington 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 £554 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 £521 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 52% 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 September 2025, prices for Washington, D.C. to London flights are approximately 77% 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	£268
Fastest flight time	7h 05m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Washington, D.C. in the past 72 hours is £268. The best return flight deal from Washington, D.C. to London found on momondo in the last 72 hours is £479.

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

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

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 September 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 40.34% of the total bookings. Other popular models include Airbus A380-800 with 13.25%, Boeing 787-8 Dreamliner with 9.76%, and Airbus A350-1000 with 5.95%.
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 15%, Iberia at 15%, and United Airlines at 10%.

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 £304	Free Cancellation	Rating 6.8 7,407 reviews	Search Lufthansa flights
Icelandair	PriceFrom £351	Free Cancellation	Rating 7.0 544 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom £376	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £379	Free Cancellation	Rating 6.7 7,363 reviews	Search British Airways flights
Air France	PriceFrom £390	Free Cancellation	Rating 7.4 1,468 reviews	Search Air France flights
Iberia	PriceFrom £408	Free Cancellation	Rating 7.0 2,924 reviews	Search Iberia flights
KLM	PriceFrom £452	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
American Airlines	PriceFrom £506	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom £516	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights

KLM Flights From Washington, D.C. to London
KLM flight deals from Washington, D.C. to London start from £616 round-trip. Over the 6 KLM flights for this route in a normal week, average airfare is usually £826 round-trip - but some users have found much cheaper deals with momondo.
Virgin Atlantic Flights From Washington, D.C. to London
Virgin Atlantic (7.4/10 from 664 reviews) operates around 6 flights from Washington, D.C. to London in any given week. The average Virgin Atlantic airfare for this route is around £818, with deals from around £512 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to London flight searches in the last 72 hours.

Eastbourne

Luton

Milton Keynes

Maidstone

Gatwick

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Chelmsford

Dover

Hayes

Dartford

Winchester

Hounslow

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.

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Flights to Manchesterfrom £30

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Flights to Invernessfrom £34

Flights to Newquayfrom £34

Cheap flights from Washington, D.C. to London from £127

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 6/10. 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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Big names, great deals

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

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

Icelandair flights from Washington, D.C. to London

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

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

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 £511. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to London for around £620.

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 £561. Flights at midday are often more expensive, with an average ticket price of £1,403.

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

Fly from Baltimore/Washington 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 52% 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 September 2025, prices for Washington, D.C. to London flights are approximately 77% more expensive when compared to flights at the same time last year.

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: 50% 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 £353.

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

Flights connecting via Boston (BOS) have the shortest average one-way travel time: 9h 25m.

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?

28 flights are operational daily from Washington, D.C. to London as of September 2025. The most popular departure time for this route is 22:00, with 76% of flights per day taking off in the evening.

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

202 flights are operational weekly from Washington, D.C. to London as of September 2025. The most popular departure day for this route is Mon, with 16% 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.

Get notified when prices go down