Which airline has the best punctuality record on Washington, D.C. to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

What airlines fly to London?

British Airways, United Airlines and Iberia are the top three most popular airlines that fly to London from Washington, D.C. according to our data. British Airways is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

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

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

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

How often are flights from Washington, D.C. to London delayed?

Historically, on average around 21% of flights between Washington, D.C. and London have experienced a delay on any given week. The average delay length over the past 12 months has been 159 minutes.

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 05m, respectively.

What is the most punctual flight time for Washington, D.C. to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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.

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

Reykjavik (KEF) was the most common stop: 53% 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 day?

28 flights are operational daily from Washington, D.C. to London as of January 2026. The most popular departure time for this route is 6:00PM, with 100% of flights per day taking off in the evening.

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

Aer Lingus, British Airways, and Icelandair 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 January 2026, there are 199 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.

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 January 2026, 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.

$200 Cheap Flights from Washington, D.C. to London in 2026

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

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One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:30 pm - 4:00 pm

IAD

LHR

14h 30m

1 stop

7:05 am - 5:15 pm

LHR

IAD

15h 10m

2 stops

$534Scandinavian Airlines

Thu, Feb 26 - Thu, Mar 5

6:05 pm - 7:50 am

IAD

STN

9h 45m

1 stop

8:30 am - 8:30 pm

STN

IAD

16h 00m

1 stop

$535Multiple Airlines

Wed, Mar 11 - Mon, Mar 16

8:40 pm - 10:55 am

IAD

LGW

10h 15m

1 stop

3:40 pm - 7:20 pm

LGW

IAD

32h 40m

1 stop

$535Icelandair

Tue, Mar 24 - Tue, Jun 16

8:30 pm - 11:55 am

IAD

LHR

10h 25m

1 stop

1:05 pm - 7:20 pm

LHR

IAD

11h 15m

1 stop

$535Icelandair

Wed, Apr 8 - Sun, Apr 19

5:30 pm - 2:05 pm

IAD

STN

15h 35m

2 stops

9:35 am - 2:35 pm

STN

IAD

34h 00m

2 stops

$536Multiple Airlines

Mon, Feb 9 - Mon, Feb 16

11:35 am - 7:30 am

DCA

LGW

14h 55m

1 stop

11:20 am - 11:42 pm

LGW

DCA

17h 22m

1 stop

$565British Airways

Wed, Feb 18 - Wed, Feb 25

6:00 am - 8:10 pm

DCA

LHR

9h 10m

1 stop

12:40 pm - 10:12 pm

LHR

DCA

14h 32m

1 stop

$569Virgin Atlantic

Tue, Feb 24 - Tue, Mar 3

1:44 pm - 4:20 pm

DCA

LGW

21h 36m

2 stops

11:20 am - 11:25 pm

LGW

DCA

17h 05m

1 stop

$572British Airways

Wed, Jan 28 - Tue, Feb 3

1:28 pm - 6:20 am

DCA

LHR

11h 52m

1 stop

7:35 am - 6:33 pm

LHR

DCA

15h 58m

2 stops

$580Iberia

Wed, Feb 25 - Wed, Mar 4

1:28 pm - 6:20 am

DCA

LHR

11h 52m

1 stop

6:15 am - 6:33 pm

LHR

DCA

17h 18m

2 stops

$581Iberia

Wed, Feb 18 - Wed, Feb 25

Iberia flights from Washington, D.C. to London

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

Iberia

Feb 25

DCA1:28 pmWashington, D.C. Reagan-National

11h 52m

1 stop

LHR6:20 amLondon Heathrow

Mar 4

LHR7:35 amLondon Heathrow

15h 58m

2 stops

DCA6:33 pmWashington, D.C. Reagan-National

$580

Iberia

Feb 18

DCA1:28 pmWashington, D.C. Reagan-National

11h 52m

1 stop

LHR6:20 amLondon Heathrow

Feb 25

LHR6:15 amLondon Heathrow

17h 18m

2 stops

DCA6:33 pmWashington, D.C. Reagan-National

$581

Iberia

Jan 19

DCA1:35 pmWashington, D.C. Reagan-National

16h 15m

2 stops

LGW10:50 amLondon Gatwick

Feb 10

LGW11:45 amLondon Gatwick

36h 09m

2 stops

DCA6:54 pmWashington, D.C. Reagan-National

$802

Icelandair flights from Washington, D.C. to London

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

Icelandair

Apr 30

IAD8:30 pmWashington, D.C. Dulles Intl

18h 50m

1 stop

LHR8:20 pmLondon Heathrow

May 5

LHR1:05 pmLondon Heathrow

11h 15m

1 stop

IAD7:20 pmWashington, D.C. Dulles Intl

$531

Icelandair

May 1

IAD8:30 pmWashington, D.C. Dulles Intl

18h 50m

1 stop

LHR8:20 pmLondon Heathrow

May 4

LHR9:25 pmLondon Heathrow

26h 55m

1 stop

IAD7:20 pmWashington, D.C. Dulles Intl

$532

Icelandair

Apr 8

IAD8:30 pmWashington, D.C. Dulles Intl

10h 25m

1 stop

LHR11:55 amLondon Heathrow

Apr 14

LHR1:05 pmLondon Heathrow

11h 15m

1 stop

IAD7:20 pmWashington, D.C. Dulles Intl

$535

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 2/26

8:30 pm-4:00 pm

1 stop14h 30m

London Heathrow

Thu 3/5

7:05 am-5:15 pm

2 stops15h 10m

$534

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 3/11

6:05 pm-7:50 am

1 stop9h 45m

London Stansted

Mon 3/16

8:30 am-8:30 pm

1 stop16h 00m

$535

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 3/24

8:40 pm-10:55 am

1 stop10h 15m

London Gatwick

Tue 6/16

3:40 pm-7:20 pm

1 stop32h 40m

$535

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 4/8

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Sun 4/19

1:05 pm-7:20 pm

1 stop11h 15m

$535

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 2/9

5:30 pm-2:05 pm

2 stops15h 35m

London Stansted

Mon 2/16

9:35 am-2:35 pm

2 stops34h 00m

$536

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 2/18

11:35 am-7:30 am

1 stop14h 55m

London Gatwick

Wed 2/25

11:20 am-11:42 pm

1 stop17h 22m

$565

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 2/24

6:00 am-8:10 pm

1 stop9h 10m

London Heathrow

Tue 3/3

12:40 pm-10:12 pm

1 stop14h 32m

$569

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 1/28

1:44 pm-4:20 pm

2 stops21h 36m

London Gatwick

Tue 2/3

11:20 am-11:25 pm

1 stop17h 05m

$572

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 2/25

1:28 pm-6:20 am

1 stop11h 52m

London Heathrow

Wed 3/4

7:35 am-6:33 pm

2 stops15h 58m

$580

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 2/18

1:28 pm-6:20 am

1 stop11h 52m

London Heathrow

Wed 2/25

6:15 am-6:33 pm

2 stops17h 18m

$581

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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

Prices

Airlines

Delays

Layovers

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Washington, D.C. is in September. Flight prices, which tend to average around $628, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Washington, D.C. averaging around $642.

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 $757. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $889. 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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $808 when looking at flights departing in the afternoon. Flights to London are more costly in the evening, with an average ticket price of $812. Departure times in the evening 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 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 $755 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 $711 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 16% 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 January 2026, prices for Washington, D.C. to London flights are approximately 66% 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	$390
Fastest flight time	7h 05m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in London	6 airports

The best one-way flight to London from Washington, D.C. in the past 72 hours is $390. The best round-trip flight deal from Washington, D.C. to London found on momondo in the last 72 hours is $651.

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

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

There are 6 airports in London. From Washington, D.C. there are direct flights to London Heathrow (LHR).

Search flight deals

How far is Washington, D.C. to London by plane?
Washington, D.C. and London are 3662.3 mi apart from one another. A reasonable flight in good conditions will take 7h 05m.
When did momondo last update prices for flights from Washington, D.C. to London?
Prices for flights from Washington, D.C. to London were last updated today.
How many operators does momondo search for flights from Washington, D.C. to London?
As of January 2026, 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 (44.82% of total bookings). The next most popular plane models are Airbus A350-1000 (12.14%), Boeing 787-9 Dreamliner (11.15%), and Boeing 767-400 (11.10%).
What is the most popular airline from Washington, D.C. to London?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to London is British Airways, representing 28% of all bookings. The subsequent popular airlines are United Airlines at 15%, Iberia at 13%, and Icelandair at 9%.

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

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $31	Free Cancellation	Rating 7.2 2,884 reviews	Search JetBlue flights
PLAY	PriceFrom $372	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
TAP AIR PORTUGAL	PriceFrom $395	Free Cancellation	Rating 7.1 2,116 reviews	Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom $422	Free Cancellation	Rating 7.1 595 reviews	Search Icelandair flights
Scandinavian Airlines	PriceFrom $424	Free Cancellation	Rating 7.3 1,646 reviews	Search Scandinavian Airlines flights
Air France	PriceFrom $442	Free Cancellation	Rating 7.4 1,520 reviews	Search Air France flights
Lufthansa	PriceFrom $447	Free Cancellation	Rating 6.8 7,709 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom $497	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.2 11,114 reviews	Search American Airlines flights
United Airlines	PriceFrom $506	Free Cancellation	Rating 7.4 9,147 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 $516. Generally, Delta has 6 flights on this route every week with an average price of $807. Delta is rated 7.9/10 by our users.
KLM Flights From Washington, D.C. to London
KLM (7.7/10 from 1,437 reviews) operates around 6 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

Luton

Hounslow

Milton Keynes

Dover

Slough

Guildford

Hayes

Crawley

Dartford

Brentwood

Watford

Wembley

Cobham

Folkestone

Romford

Richmond

Uxbridge

Chelmsford

Stansted

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 $200

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 1/26. 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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Iberia flights from Washington, D.C. to London

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

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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

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 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 16% 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 January 2026, prices for Washington, D.C. to London flights are approximately 66% 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?

Aer Lingus, British Airways, and Icelandair are the most popular carriers operating from Washington, D.C. to London

What airlines fly to London?

How often are flights from Washington, D.C. to London delayed?

Historically, on average around 21% of flights between Washington, D.C. and London have experienced a delay on any given week. The average delay length over the past 12 months has been 159 minutes.

What is the most punctual flight time for Washington, D.C. to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Washington, D.C. to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

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

Reykjavik (KEF) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.

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

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

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

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

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

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

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

28 flights are operational daily from Washington, D.C. to London as of January 2026. The most popular departure time for this route is 6:00PM, with 100% of flights per day taking off in the evening.

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

As of January 2026, there are 199 flights per week flying from Washington, D.C. to London. The most common day of the week flights depart is Thu, 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 05m, 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?