Which layover 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 07m.

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

30 flights are operational daily from Washington, D.C. to London as of August 2025. The most popular departure time for this route is 10:00PM, with 75% of flights per day taking off in the evening.

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 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.

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

Reykjavik (KEF) was the most common stop: 64% of momondo users choosing 1-stop flights on this route connected there.

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

As of August 2025, there are 213 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 15% of flights taking off on this day.

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

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $388.

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 50% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 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?

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

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 August 2025, there are 18 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.

$206 Cheap Flights from Washington, D.C. to London (WAS-LON) in 2025

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 $612 to $885. The lowest price recently found on this route was $416.

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 (WAS-LON)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:30 pm - 3:50 pmIAD-LGW

17h 20m1 stop

4:35 pm - 3:15 pmLGW-IAD

27h 40m1 stop

$416TAP AIR PORTUGAL

Find Deal

jue., nov. 27 - mié., dic. 3

11:30 pm - 3:30 pmIAD-LHR

12h 00m1 stop

12:25 pm - 9:00 pmLHR-IAD

13h 35m1 stop

$417TAP AIR PORTUGAL

Find Deal

mié., oct. 29 - dom., nov. 2

6:50 pm - 10:40 amBWI-STN

10h 50m1 stop

11:40 am - 5:40 pmSTN-BWI

11h 00m1 stop

$453PLAY

Find Deal

lun., sep. 22 - mié., sep. 24

6:50 pm - 10:40 amBWI-STN

10h 50m1 stop

11:40 am - 5:40 pmSTN-BWI

11h 00m1 stop

$455PLAY

Find Deal

mar., sep. 30 - dom., oct. 12

5:31 pm - 9:20 amIAD-LHR

10h 49m1 stop

6:50 am - 2:25 pmLHR-IAD

12h 35m1 stop

$472United Airlines

Find Deal

dom., ago. 17 - mar., ago. 26

1:20 pm - 6:20 amIAD-LHR

12h 00m1 stop

7:45 am - 2:25 pmLHR-IAD

11h 40m1 stop

$475United Airlines

Find Deal

dom., ago. 17 - mar., ago. 26

1:39 pm - 8:10 amDCA-LGW

13h 31m1 stop

3:05 pm - 10:57 pmLGW-DCA

12h 52m1 stop

$486British Airways

Find Deal

mié., oct. 1 - mar., oct. 7

1:06 pm - 10:50 amDCA-LGW

16h 44m2 stops

3:05 pm - 11:07 pmLGW-DCA

13h 02m1 stop

$500Iberia

Find Deal

mar., ago. 19 - mié., sep. 3

3:35 pm - 6:20 amDCA-LHR

9h 45m1 stop

10:50 am - 11:07 pmLHR-DCA

17h 17m2 stops

$508Iberia

Find Deal

mié., sep. 3 - mié., sep. 10

3:35 pm - 8:10 amDCA-LGW

11h 35m1 stop

3:05 pm - 11:07 pmLGW-DCA

13h 02m1 stop

$513British Airways

Find Deal

lun., sep. 15 - mié., sep. 24

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 17

IAD12:39 pmWashington, D.C. Dulles Intl

13h 06m

1 stop

LHR6:45 amLondon Heathrow

Aug 26

LHR12:35 pmLondon Heathrow

8h 25m

IAD4:00 pmWashington, D.C. Dulles Intl

$435

Find similar

Virgin Atlantic

Aug 17

IAD5:50 pmWashington, D.C. Dulles Intl

7h 30m

LHR6:20 amLondon Heathrow

Aug 26

LHR12:35 pmLondon Heathrow

8h 25m

IAD4:00 pmWashington, D.C. Dulles Intl

$439

Find similar

Virgin Atlantic

Aug 17

IAD8:23 pmWashington, D.C. Dulles Intl

10h 02m

1 stop

LHR11:25 amLondon Heathrow

Aug 26

LHR12:55 pmLondon Heathrow

11h 48m

1 stop

IAD7:43 pmWashington, D.C. Dulles Intl

$444

Find similar

Aer Lingus flights from Washington, D.C. to London

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

Aer Lingus

Aug 17

IAD5:20 pmWashington, D.C. Dulles Intl

9h 40m

1 stop

LHR8:00 amLondon Heathrow

Aug 26

LHR12:00 pmLondon Heathrow

12h 30m

1 stop

IAD7:30 pmWashington, D.C. Dulles Intl

$467

Find similar

Aer Lingus

Aug 19

IAD9:00 pmWashington, D.C. Dulles Intl

10h 40m

1 stop

LHR12:40 pmLondon Heathrow

Aug 26

LHR1:25 pmLondon Heathrow

11h 05m

1 stop

IAD7:30 pmWashington, D.C. Dulles Intl

$479

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

jue. 11/27

5:30 pm-3:50 pm

1 stop17h 20m

London Gatwick

mié. 12/3

4:35 pm-3:15 pm

1 stop27h 40m

$416

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

mié. 10/29

11:30 pm-3:30 pm

1 stop12h 00m

London Heathrow

dom. 11/2

12:25 pm-9:00 pm

1 stop13h 35m

$417

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

lun. 9/22

6:50 pm-10:40 am

1 stop10h 50m

London Stansted

mié. 9/24

11:40 am-5:40 pm

1 stop11h 00m

$453

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

mar. 9/30

6:50 pm-10:40 am

1 stop10h 50m

London Stansted

dom. 10/12

11:40 am-5:40 pm

1 stop11h 00m

$455

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

dom. 8/17

5:31 pm-9:20 am

1 stop10h 49m

London Heathrow

mar. 8/26

6:50 am-2:25 pm

1 stop12h 35m

$472

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

dom. 8/17

1:20 pm-6:20 am

1 stop12h 00m

London Heathrow

mar. 8/26

7:45 am-2:25 pm

1 stop11h 40m

$475

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

mié. 10/1

1:39 pm-8:10 am

1 stop13h 31m

London Gatwick

mar. 10/7

3:05 pm-10:57 pm

1 stop12h 52m

$486

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

mar. 8/19

1:06 pm-10:50 am

2 stops16h 44m

London Gatwick

mié. 9/3

3:05 pm-11:07 pm

1 stop13h 02m

$500

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

mié. 9/3

3:35 pm-6:20 am

1 stop9h 45m

London Heathrow

mié. 9/10

10:50 am-11:07 pm

2 stops17h 17m

$508

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

lun. 9/15

3:35 pm-8:10 am

1 stop11h 35m

London Gatwick

mié. 9/24

3:05 pm-11:07 pm

1 stop13h 02m

$513

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 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 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 $756. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $899. 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 $748 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $824. 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 $770 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.

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

As of August 2025, prices for Washington, D.C. to London flights are approximately 18% 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	$206
Fastest flight time	7h 15m
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 $206. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $416.

The fastest flight from Washington, D.C. to London takes 7h 15m

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)

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 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 August 2025, there are 18 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 (36.33% of total bookings). The next most popular plane models are Airbus A380-800 (16.27%), Boeing 787-8 Dreamliner (9.41%), and Boeing 777-300ER (7.50%).
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 25% of all bookings. The subsequent popular airlines are Iberia at 15%, United Airlines at 14%, and PLAY 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 2,915 reviews	Search JetBlue flights
PLAY	PriceFrom $313	Free Cancellation	Rating 7.0 102 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.4 1,465 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $421	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights
Icelandair	PriceFrom $433	Free Cancellation	Rating 7.0 524 reviews	Search Icelandair flights
TAP AIR PORTUGAL	PriceFrom $441	Free Cancellation	Rating 7.1 1,944 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $447	Free Cancellation	Rating 6.8 7,289 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom $497	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $506	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines 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 5 flights on this route every week with an average price of $803. Delta is rated 8.0/10 by our users.
KLM Flights From Washington, D.C. to London
KLM (7.8/10 from 1,381 reviews) operates around 5 flights from Washington, D.C. to London in any given week. The average KLM airfare for this route is around $615, 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

Dover

Slough

Luton

Guildford

Milton Keynes

Dartford

Crawley

Hayes

Chelmsford

Stansted

Ilford

Brentwood

Colchester

Folkestone

Watford

Canterbury

Richmond

Wembley

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

mar. 8/12

mar. 8/19

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 $206

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 9/24. 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 (WAS-LON)

Cheap round-trip 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

Aer Lingus flights from Washington, D.C. to London

Our best Aer Lingus 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 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?

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 August 2025, prices for Washington, D.C. to London flights are approximately 18% 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?

TAP AIR PORTUGAL and WorldTicket 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: 64% 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 Reykjavik (KEF) offer the lowest average round-trip price of $388.

Which layover 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 07m.

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?

30 flights are operational daily from Washington, D.C. to London as of August 2025. The most popular departure time for this route is 10:00PM, with 75% 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 August 2025, there are 213 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Wed, with 15% 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

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

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