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 25m, respectively.

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 48% 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.

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

Icelandair, PLAY, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. to London

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

As of July 2025, there are 231 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

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

33 flights are operational daily from Washington, D.C. to London as of July 2025. The most popular departure time for this route is 10:00PM, with 70% of flights per day taking off in the evening.

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 July 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.

$176 Cheap Flights from Washington, D.C. to London in 2025

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:00 pm - 10:20 amIAD-LHR

12h 20m1 stop

6:30 pm - 3:15 pmLHR-IAD

25h 45m1 stop

$421TAP AIR PORTUGAL

Find Deal

Tue, Sep 9 - Wed, Nov 19

11:54 am - 6:55 amBWI-LGW

14h 01m1 stop

10:00 am - 6:49 pmLGW-BWI

13h 49m1 stop

$421

Find Deal

Mon, Sep 22 - Thu, Sep 25

6:50 pm - 10:40 amBWI-STN

10h 50m1 stop

11:40 am - 5:40 pmSTN-BWI

11h 00m1 stop

$430PLAY

Find Deal

Mon, Sep 22 - Thu, Sep 25

6:50 pm - 10:40 amBWI-STN

10h 50m1 stop

11:40 am - 5:40 pmSTN-BWI

11h 00m1 stop

$432PLAY

Find Deal

Sun, Sep 21 - Thu, Sep 25

5:31 pm - 10:10 amIAD-LHR

11h 39m1 stop

6:50 am - 2:25 pmLHR-IAD

12h 35m1 stop

$474United Airlines

Find Deal

Sun, Aug 10 - Tue, Aug 19

5:31 pm - 9:20 amIAD-LHR

10h 49m1 stop

6:50 am - 2:25 pmLHR-IAD

12h 35m1 stop

$477United Airlines

Find Deal

Sun, Aug 10 - Tue, Aug 19

2:54 pm - 8:10 amDCA-LGW

12h 16m1 stop

3:05 pm - 11:18 pmLGW-DCA

13h 13m1 stop

$479British Airways

Find Deal

Mon, Aug 18 - Tue, Aug 26

3:35 pm - 8:10 amDCA-LGW

11h 35m1 stop

3:05 pm - 11:07 pmLGW-DCA

13h 02m1 stop

$483British Airways

Find Deal

Tue, Sep 9 - Tue, Sep 23

1:08 pm - 7:50 amDCA-LHR

13h 42m1 stop

10:50 am - 11:07 pmLHR-DCA

17h 17m2 stops

$511Iberia

Find Deal

Mon, Sep 1 - Wed, Sep 17

3:35 pm - 6:20 amDCA-LHR

9h 45m1 stop

7:10 pm - 11:07 pmLHR-DCA

32h 57m2 stops

$512Iberia

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Sun, Sep 14 - Mon, Sep 22

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

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

Virgin Atlantic

Aug 11

IAD5:50 pmWashington, D.C. Dulles Intl

7h 30m

LHR6:20 amLondon Heathrow

Aug 20

LHR6:30 amLondon Heathrow

14h 05m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

$463

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Virgin Atlantic

Aug 11

IAD5:50 pmWashington, D.C. Dulles Intl

7h 30m

LHR6:20 amLondon Heathrow

Aug 20

LHR12:35 pmLondon Heathrow

8h 25m

IAD4:00 pmWashington, D.C. Dulles Intl

$469

Find similar

Virgin Atlantic

Aug 10

DCA4:51 pmWashington, D.C. Reagan-National

11h 59m

1 stop

LHR9:50 amLondon Heathrow

Aug 19

LHR10:55 amLondon Heathrow

12h 19m

1 stop

DCA6:14 pmWashington, D.C. Reagan-National

$475

Find similar

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

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

United Airlines

Aug 10

IAD5:31 pmWashington, D.C. Dulles Intl

11h 39m

1 stop

LHR10:10 amLondon Heathrow

Aug 19

LHR6:50 amLondon Heathrow

12h 35m

1 stop

IAD2:25 pmWashington, D.C. Dulles Intl

$474

Find similar

United Airlines

Aug 10

IAD5:31 pmWashington, D.C. Dulles Intl

10h 49m

1 stop

LHR9:20 amLondon Heathrow

Aug 19

LHR6:50 amLondon Heathrow

12h 35m

1 stop

IAD2:25 pmWashington, D.C. Dulles Intl

$477

Find similar

United Airlines

Aug 10

IAD6:35 pmWashington, D.C. Dulles Intl

7h 20m

LHR6:55 amLondon Heathrow

Aug 19

LHR6:50 amLondon Heathrow

12h 35m

1 stop

IAD2:25 pmWashington, D.C. Dulles Intl

$480

Find similar

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

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Washington, D.C. is in January. Flight prices, which tend to average around $643, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Washington, D.C. averaging around $654.

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 $763. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $896. 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 morning is the least expensive time of day to depart. momondo users have found prices as low as $761 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $831. 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 $768 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 $692 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.

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

As of July 2025, prices for Washington, D.C. to London flights are approximately 16% 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	$176
Fastest flight time	7h 20m
Direct flights	Every day
Airports in London	5 airports

The best one-way flight to London from Washington, D.C. in the past 72 hours is $176. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $421.

The fastest flight from Washington, D.C. to London takes 7h 20m

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

There are 5 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW)

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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 20m.
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 July 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 (36.96% of total bookings). The next most popular plane models are Airbus A380-800 (19.45%), Boeing 787-8 Dreamliner (10.18%), and Airbus A380 (6.70%).
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 23% of all bookings. The subsequent popular airlines are Iberia at 15%, United Airlines at 15%, and PLAY 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
PLAY	PriceFrom $369	Free Cancellation	Rating 7.0 102 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.3 1,421 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $421	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights
Icelandair	PriceFrom $433	Free Cancellation	Rating 7.0 515 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $471	Free Cancellation	Rating 7.4 654 reviews	Search Virgin Atlantic flights
TAP AIR PORTUGAL	PriceFrom $486	Free Cancellation	Rating 7.1 1,917 reviews	Search TAP AIR PORTUGAL flights
British Airways	PriceFrom $496	Free Cancellation	Rating 6.6 7,120 reviews	Search British Airways flights
Air Canada	PriceFrom $549	Free Cancellation	Rating 7.1 9,702 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $557	Free Cancellation	Rating 7.1 1,157 reviews	Search Aer Lingus flights
Iberia	PriceFrom $562	Free Cancellation	Rating 7.0 2,831 reviews	Search Iberia 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 $421. Generally, Delta has 8 flights on this route every week with an average price of $820. Delta is rated 8.0/10 by our users.
Finnair Flights From Washington, D.C. to London
Finnair (7.6/10 from 1,312 reviews) operates around 13 flights from Washington, D.C. to London in any given week. The average Finnair airfare for this route is around $752, with deals from around $585 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. to London flight searches in the last 72 hours.

Hounslow

Gatwick

Croydon

Luton

Slough

Dover

Dartford

Guildford

Stansted

Hayes

Milton Keynes

Ilford

Colchester

Chelmsford

Canterbury

Watford

Richmond

Wembley

Dagenham

St. Albans

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.

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Cheap flights from Washington, D.C. to London from $176

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 8/10. 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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Virgin Atlantic flights from Washington, D.C. to London

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

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

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

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.

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

As of July 2025, prices for Washington, D.C. to London flights are approximately 16% 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?

Icelandair, PLAY, and TAP AIR PORTUGAL are the most popular carriers operating from Washington, D.C. to London

What airlines fly to London?

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

33 flights are operational daily from Washington, D.C. to London as of July 2025. The most popular departure time for this route is 10:00PM, with 70% 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 July 2025, there are 231 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 16% 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 25m, 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

Finnair 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

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

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London