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

31 flights are operational daily from Washington, D.C. to London Heathrow Airport as of August 2026. The most popular departure time for this route is 10:00PM, with 83% of flights per day taking off in the evening.

How long does it take to fly to London Heathrow Airport?

On average, it takes 7h 10m to fly from Washington, D.C. to London Heathrow Airport if you fly out of Baltimore (the most popular airport in Washington, D.C.) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Washington, D.C. and into London Heathrow Airport, then the flight time is around 8h 12m.

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

Reykjavik (KEF) was the most common stop: 39% of momondo users choosing 1-stop flights on this route connected there.

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

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

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 13% of their flights experiencing any sort of delay.

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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday 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 Heathrow Airport?

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 42m.

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

Historically, on average around 18% 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 176 minutes.

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

Flights via New York (JFK) offer the lowest average round-trip price of $570.

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

Delta, United Airlines, and JetBlue are the most popular carriers operating from Washington, D.C. to London Heathrow

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

New York (JFK) has the shortest average layover time for this route: 1h 18m.

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

As of August 2026, there are 220 flights per week flying from Washington, D.C. to London Heathrow Airport. The most common day of the week flights depart is Fri, with 15% of flights taking off on this day.

What airlines fly to London Heathrow Airport?

British Airways, United Airlines and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Washington, D.C. according to our data. British Airways is the first choice among our users, with 51% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 18 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Washington, D.C. to London Heathrow Airport were last updated today.

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

As of August 2026, there are 18 operators available to choose from for flights from Washington, D.C. to London Heathrow Airport.

How old do you have to be to fly from Washington, D.C. to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$258 Cheap Flights from Washington, D.C. to London Heathrow Airport in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:25 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 05m1 stop Lisbon Humberto Delgado

6:00 am - 2:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 45m1 stop Lisbon Humberto Delgado

$627TAP AIR PORTUGAL

Tue, Nov 24 - Tue, Dec 1

10:30 pm - 6:55 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 25m1 stop Lisbon Humberto Delgado

6:30 pm - 3:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

25h 45m1 stop Lisbon Humberto Delgado

$627TAP AIR PORTUGAL

Wed, Nov 4 - Wed, Nov 11

4:45 pm - 12:55 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

39h 10m2 stops Kastrup Copenhagen Stockholm Arlanda

6:40 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

17h 10m1 stop Kastrup Copenhagen

$631Scandinavian Airlines

Wed, Jan 27 - Sat, Jan 30

8:30 pm - 9:20 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 50m2 stops Kastrup Copenhagen Stockholm Arlanda

6:40 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 35m2 stops Stockholm Arlanda Kastrup Copenhagen

$633Scandinavian Airlines

Wed, Nov 4 - Wed, Nov 11

7:40 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

8:35 pm - 6:30 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

$646Icelandair

Tue, Dec 1 - Sat, Dec 5

8:30 pm - 9:35 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

32h 05m3 stops Kastrup Copenhagen Stockholm Arlanda Warsaw Frederic Chopin

1:55 pm - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

32h 20m2 stops Stockholm Arlanda Kastrup Copenhagen

$646Multiple Airlines

Wed, Nov 4 - Wed, Nov 11

8:30 pm - 9:35 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

32h 05m3 stops Kastrup Copenhagen Stockholm Arlanda Warsaw Frederic Chopin

6:40 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 35m2 stops Stockholm Arlanda Kastrup Copenhagen

$647Multiple Airlines

Wed, Nov 4 - Mon, Nov 9

7:40 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

12:15 pm - 6:30 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

$651Icelandair

Wed, Feb 3 - Sun, Feb 7

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$659British Airways

Mon, Jan 11 - Mon, Jan 18

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$659British Airways

Wed, Jan 13 - Mon, Jan 18

Cheap last minute flights

Enter your travel dates to find the best prices.

12:29 pm - 9:35 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

16h 06m2 stops New York John F Kennedy Intl Oslo Gardermoen

7:05 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 55m2 stops Oslo Gardermoen Kastrup Copenhagen

$758Scandinavian Airlines

Sat, Aug 22 - Mon, Aug 24

12:29 pm - 9:35 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

16h 06m2 stops New York John F Kennedy Intl Oslo Gardermoen

7:30 pm - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 30m1 stop Kastrup Copenhagen

$760Scandinavian Airlines

Sat, Aug 22 - Sun, Aug 23

10:35 pm - 12:45 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

33h 10m1 stop Lisbon Humberto Delgado

7:50 pm - 3:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

24h 20m1 stop Lisbon Humberto Delgado

$761TAP AIR PORTUGAL

Tue, Aug 18 - Mon, Sep 21

10:35 pm - 6:50 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 15m1 stop Lisbon Humberto Delgado

7:50 pm - 3:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

24h 20m1 stop Lisbon Humberto Delgado

$780TAP AIR PORTUGAL

Tue, Aug 18 - Tue, Sep 1

5:00 pm - 9:30 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 30m1 stop Madrid Barajas

11:30 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Madrid Barajas

$854Iberia

Wed, Aug 19 - Tue, Aug 25

8:25 pm - 2:55 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

13h 30m1 stop Madrid Barajas

11:30 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Madrid Barajas

$882Iberia

Tue, Aug 18 - Tue, Aug 25

6:10 am - 8:45 pmDCA Washington, D.C. Reagan-National-LHR London Heathrow

9h 35m1 stop New York John F Kennedy Intl

8:15 am - 10:59 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

19h 44m1 stop New York John F Kennedy Intl

$886JetBlue

Fri, Aug 21 - Sun, Aug 30

6:10 am - 8:45 pmDCA Washington, D.C. Reagan-National-LHR London Heathrow

9h 35m1 stop New York John F Kennedy Intl

8:15 am - 10:59 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

19h 44m1 stop New York John F Kennedy Intl

$886JetBlue

Fri, Aug 21 - Mon, Aug 24

10:35 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 10m1 stop Lisbon Humberto Delgado

11:30 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Madrid Barajas

$903Multiple Airlines

Tue, Aug 18 - Tue, Aug 25

5:45 pm - 10:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 35m1 stop Lisbon Humberto Delgado

11:30 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Madrid Barajas

$903Multiple Airlines

Wed, Aug 19 - Tue, Aug 25

Cheap direct flights

Enter your travel dates to find the best prices.

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$659British Airways

Mon, Jan 11 - Mon, Jan 18

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$659British Airways

Wed, Jan 13 - Mon, Jan 18

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$804Multiple Airlines

Tue, Nov 17 - Fri, Nov 27

6:55 pm - 7:05 amBWI Baltimore/Washington-LHR London Heathrow

7h 10mnonstop

1:50 pm - 5:05 pmLHR London Heathrow-BWI Baltimore/Washington

8h 15mnonstop

$804Multiple Airlines

Mon, Nov 16 - Thu, Nov 26

10:05 pm - 10:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$814Virgin Atlantic

Mon, Sep 21 - Tue, Sep 29

5:45 pm - 6:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

5:05 pm - 8:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 15mnonstop

$835Finnair

Mon, Sep 21 - Tue, Sep 29

10:05 pm - 10:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$837Virgin Atlantic

Mon, Sep 21 - Tue, Sep 29

10:05 pm - 10:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$839KLM

Wed, Sep 23 - Wed, Sep 30

10:05 pm - 10:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$842KLM

Tue, Sep 22 - Wed, Sep 30

6:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mnonstop

12:15 pm - 3:40 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$855Finnair

Sun, Nov 1 - Tue, Nov 10

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TAP AIR PORTUGAL flights from Washington, D.C. to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Washington, D.C. to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Nov 24

IAD5:25 pmWashington, D.C. Dulles Intl

19h 05m

1 stop

LHR5:30 pmLondon Heathrow

Dec 1

LHR6:00 amLondon Heathrow

13h 45m

1 stop

IAD2:45 pmWashington, D.C. Dulles Intl

$627

TAP AIR PORTUGAL

Oct 25

IAD11:30 pmWashington, D.C. Dulles Intl

19h 10m

1 stop

LHR10:40 pmLondon Heathrow

Nov 5

LHR7:55 pmLondon Heathrow

29h 40m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$628

TAP AIR PORTUGAL

Nov 11

IAD10:30 pmWashington, D.C. Dulles Intl

18h 05m

1 stop

LHR9:35 pmLondon Heathrow

Nov 16

LHR6:00 amLondon Heathrow

14h 15m

1 stop

IAD3:15 pmWashington, D.C. Dulles Intl

$629

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

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

Scandinavian Airlines

Oct 2

IAD8:20 pmWashington, D.C. Dulles Intl

14h 40m

1 stop

LHR4:00 pmLondon Heathrow

Oct 4

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$638

Scandinavian Airlines

Oct 2

IAD8:20 pmWashington, D.C. Dulles Intl

14h 40m

1 stop

LHR4:00 pmLondon Heathrow

Oct 8

LHR6:40 amLondon Heathrow

15h 20m

1 stop

IAD5:00 pmWashington, D.C. Dulles Intl

$639

Scandinavian Airlines

Sep 17

IAD8:20 pmWashington, D.C. Dulles Intl

32h 00m

1 stop

LHR9:20 amLondon Heathrow

Sep 20

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$642

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Tue 11/24

5:25 pm-5:30 pm

1 stop19h 05m

London Heathrow

Tue 12/1

6:00 am-2:45 pm

1 stop13h 45m

$627

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 11/4

10:30 pm-6:55 pm

1 stop15h 25m

London Heathrow

Wed 11/11

6:30 pm-3:15 pm

1 stop25h 45m

$627

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 1/27

4:45 pm-12:55 pm

2 stops39h 10m

London Heathrow

Sat 1/30

6:40 am-6:50 pm

1 stop17h 10m

$631

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 11/4

8:30 pm-9:20 pm

2 stops19h 50m

London Heathrow

Wed 11/11

6:40 am-5:15 pm

2 stops15h 35m

$633

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Tue 12/1

7:40 pm-10:50 am

1 stop10h 10m

London Heathrow

Sat 12/5

8:35 pm-6:30 pm

1 stop26h 55m

$646

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 11/4

8:30 pm-9:35 am

3 stops32h 05m

London Heathrow

Wed 11/11

1:55 pm-5:15 pm

2 stops32h 20m

$646

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 11/4

8:30 pm-9:35 am

3 stops32h 05m

London Heathrow

Mon 11/9

6:40 am-5:15 pm

2 stops15h 35m

$647

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 2/3

7:40 pm-10:50 am

1 stop10h 10m

London Heathrow

Sun 2/7

12:15 pm-6:30 pm

1 stop11h 15m

$651

Quickest round-trip

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 1/11

6:55 pm-7:05 am

Nonstop7h 10m

London Heathrow

Mon 1/18

1:50 pm-5:05 pm

Nonstop8h 15m

$659

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Wed 1/13

6:55 pm-7:05 am

Nonstop7h 10m

London Heathrow

Mon 1/18

1:50 pm-5:05 pm

Nonstop8h 15m

$659

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 Heathrow Airport

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

Prices are currently low for flights on this route.

Typical prices usually range from $831 to $1,089.
The lowest price recently found on this route was $627.

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Washington, D.C., with most prices found around $686. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from Washington, D.C. to London Heathrow Airport during January average around $736.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $883. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $983.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Washington, D.C. to London Heathrow Airport in the afternoon for as low as $897. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $952.

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

Fly from Washington, D.C. Dulles Intl to London Heathrow for the best Washington, D.C. - London Heathrow flight prices

How far in advance should I book a flight from Washington, D.C. to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $879 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Washington, D.C. for as low as $841 on momondo.

What cabin class options are available on Washington, D.C. to London Heathrow Airport flights?

There are 4 cabin classes available to choose from on Washington, D.C. to London Heathrow Airport 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 Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to London Heathrow Airport.

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

As of August 2026, prices for Washington, D.C. to London Heathrow Airport flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to London Heathrow Airport 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 Heathrow Airport (WAS to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to London Heathrow Airport

Best Price Found	$258
Fastest flight time	7h 10m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Washington, D.C. in the past 72 hours is $258. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $627.

The fastest flight from Washington, D.C. to London Heathrow Airport takes 7h 10m

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

Search flight deals

Frequently asked questions about flying from Washington, D.C. to London Heathrow Airport

How far is Washington, D.C. to London Heathrow by plane?
Washington, D.C. and London Heathrow are 3649.4 mi apart from one another. 7h 10m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to London Heathrow Airport?
Prices for flights from Washington, D.C. to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to London Heathrow Airport?
As of August 2026, there are 18 operators available to choose from for flights from Washington, D.C. to London Heathrow Airport.
How old do you have to be to fly from Washington, D.C. to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Washington, D.C. to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to London Heathrow Airport is Boeing 777, representing 55.41% of all bookings. The subsequent popular models are Boeing 777-300ER at 14.47%, Boeing 787-9 Dreamliner at 6.70%, and Airbus A330-900neo at 4.51%.
What is the most popular airline from Washington, D.C. to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to London Heathrow Airport is British Airways, representing 36% of all bookings. The subsequent popular airlines are United Airlines at 18%, American Airlines at 11%, and Virgin Atlantic at 8%.

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

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

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $420	Free Cancellation	Rating 7.2 2,370 reviews	Search TAP AIR PORTUGAL flights
Virgin Atlantic	PriceFrom $449	Free Cancellation	Rating 7.5 692 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $462	Free Cancellation	Rating 7.4 10,106 reviews	Search United Airlines flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 6.9 732 reviews	Search Icelandair flights
Delta	PriceFrom $530	Free Cancellation	Rating 7.8 8,503 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 1,952 reviews	Search Scandinavian Airlines flights
Iberia	PriceFrom $575	Free Cancellation	Rating 7.0 3,257 reviews	Search Iberia flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,484 reviews	Search Air Canada flights
Air France	PriceFrom $581	Free Cancellation	Rating 7.5 1,647 reviews	Search Air France flights
British Airways	PriceFrom $593	Free Cancellation	Rating 6.7 8,172 reviews	Search British Airways flights

Delta Flights From Washington, D.C. to London Heathrow Airport
Delta flight deals from Washington, D.C. to London Heathrow Airport start from $530 round-trip. Over the 7 Delta flights for this route in a normal week, average airfare is usually $944 round-trip - but some users have found much cheaper deals with momondo.
KLM Flights From Washington, D.C. to London Heathrow Airport
Across 1,558 KLM reviews on momondo, the average score is 7.8/10. KLM flies from Washington, D.C. to London Heathrow Airport about 7 times each week, with ticket deals ranging from $618 to $1,031. Price data is based on momondo searches in the last 72 hours.

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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?

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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 London Gatwick Airportfrom $387

Flights to London Stansted Airportfrom $416

Flights to London City Airportfrom $741

Flights to London Luton Airportfrom $487

Flights to Glasgow Intl Airportfrom $552

Flights to Belfast Intl Airportfrom $634

Flights to London Southend Airportfrom $637

Flights to Belfast City Airportfrom $638

Cheap flights from Washington, D.C. to London from $258

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 1/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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TAP AIR PORTUGAL flights from Washington, D.C. to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Washington, D.C. to London Heathrow Airport flight tickets

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

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

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

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

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

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Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport 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 London

Popular cities in the United Kingdom

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