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.

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 200 flights per week flying from Washington, D.C. to London Heathrow Airport. The most common day of the week flights depart is Fri, with 17% of flights taking off on this day.

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.

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

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

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

Reykjavik (KEF) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

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 05m.

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.

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.

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.

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

28 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 84% of flights per day taking off in the evening.

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.

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.

$291 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 - 6:55 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

20h 30m1 stop Lisbon Humberto Delgado

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

25h 45m1 stop Lisbon Humberto Delgado

$616TAP AIR PORTUGAL

Sat, Nov 7 - Fri, Nov 13

10:35 pm - 10:55 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 20m1 stop Lisbon Humberto Delgado

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

24h 20m1 stop Lisbon Humberto Delgado

$618TAP AIR PORTUGAL

Mon, Sep 21 - Tue, Sep 29

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

32h 00m1 stop Kastrup Copenhagen

6:40 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 20m2 stops Stockholm Arlanda Kastrup Copenhagen

$620Scandinavian Airlines

Mon, Oct 5 - Thu, Oct 8

8:20 pm - 4:00 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 40m1 stop Kastrup Copenhagen

6:40 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 20m1 stop Kastrup Copenhagen

$622Scandinavian Airlines

Fri, Oct 9 - Mon, Oct 19

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

$635Icelandair

Fri, Nov 20 - Mon, Nov 23

7:40 pm - 7:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 50m1 stop Reykjavik Keflavik Intl

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

11h 15m1 stop Reykjavik Keflavik Intl

$649Icelandair

Wed, Dec 2 - Thu, Dec 24

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

$673British Airways

Wed, Dec 9 - Tue, Dec 15

7:40 pm - 9:35 pmBWI Baltimore/Washington-LHR London Heathrow

20h 55m2 stops Reykjavik Keflavik Intl Oslo Gardermoen

7:05 am - 6:40 pmLHR London Heathrow-BWI Baltimore/Washington

16h 35m2 stops Oslo Gardermoen Reykjavik Keflavik Intl

$674Multiple Airlines

Sun, Nov 1 - Tue, Nov 10

8:40 pm - 6:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

17h 50m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

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

26h 55m1 stop Reykjavik Keflavik Intl

$681Multiple Airlines

Wed, Oct 28 - Tue, Nov 3

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

$711British Airways

Mon, Jan 18 - Mon, Jan 25

Cheap last minute flights

Enter your travel dates to find the best prices.

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

15h 15m1 stop Lisbon Humberto Delgado

12:00 pm - 8:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 35m1 stop Lisbon Humberto Delgado

$711TAP AIR PORTUGAL

Sun, Aug 23 - Fri, Oct 23

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

33h 10m1 stop Lisbon Humberto Delgado

6:45 pm - 3:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

25h 25m1 stop Lisbon Humberto Delgado

$737TAP AIR PORTUGAL

Mon, Aug 24 - Tue, Sep 15

8:20 pm - 9:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

20h 20m1 stop Kastrup Copenhagen

6:05 pm - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

27h 55m2 stops Stockholm Arlanda Kastrup Copenhagen

$861Scandinavian Airlines

Sun, Aug 23 - Fri, Oct 23

8:30 pm - 8:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

31h 10m2 stops Reykjavik Keflavik Intl Frankfurt am Main

6:40 pm - 10:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

32h 35m2 stops Zurich Reykjavik Keflavik Intl

$867Multiple Airlines

Mon, Aug 24 - Mon, Aug 31

8:20 pm - 5:00 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 40m2 stops Kastrup Copenhagen Stockholm Arlanda

6:40 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 20m1 stop Kastrup Copenhagen

$873Scandinavian Airlines

Sun, Aug 23 - Fri, Oct 23

5:40 pm - 10:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 40m1 stop Lisbon Humberto Delgado

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

11h 15m1 stop Reykjavik Keflavik Intl

$880Multiple Airlines

Mon, Aug 24 - Wed, Jan 13

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

$887JetBlue

Wed, Aug 26 - Mon, Aug 31

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

$888JetBlue

Mon, Aug 24 - Mon, Aug 31

5:15 pm - 8:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

9h 50m1 stop Dublin

8:50 am - 3:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Dublin

$975British Airways

Mon, Aug 24 - Wed, Aug 26

5:15 pm - 8:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

9h 50m1 stop Dublin

1:25 pm - 7:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 10m1 stop Dublin

$1,035British Airways

Sun, Aug 23 - 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

$673British Airways

Wed, Dec 9 - Tue, Dec 15

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

$711British Airways

Mon, Jan 18 - Mon, Jan 25

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

Sun, Nov 29 - Fri, Dec 11

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 23 - Mon, Nov 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

$838Virgin 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

$838Virgin Atlantic

Sun, Sep 20 - 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

$839Air France

Tue, Oct 6 - Tue, Oct 13

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

7h 35mnonstop

4:25 pm - 8:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$850Finnair

Wed, Oct 21 - Wed, Oct 28

10:25 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

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

8h 15mnonstop

$851Finnair

Tue, Sep 22 - 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

$871Air France

Mon, Sep 21 - Tue, Sep 29

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JetBlue flights from Washington, D.C. to London Heathrow Airport

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

JetBlue

Sep 15

DCA6:30 amWashington, D.C. Reagan-National

9h 15m

1 stop

LHR8:45 pmLondon Heathrow

Sep 28

LHR8:40 amLondon Heathrow

11h 06m

1 stop

DCA2:46 pmWashington, D.C. Reagan-National

$745

JetBlue

Sep 5

DCA6:10 amWashington, D.C. Reagan-National

9h 35m

1 stop

LHR8:45 pmLondon Heathrow

Sep 9

LHR8:40 amLondon Heathrow

12h 19m

1 stop

DCA3:59 pmWashington, D.C. Reagan-National

$883

JetBlue

Sep 5

DCA6:10 amWashington, D.C. Reagan-National

9h 35m

1 stop

LHR8:45 pmLondon Heathrow

Sep 10

LHR11:55 amLondon Heathrow

16h 04m

1 stop

DCA10:59 pmWashington, D.C. Reagan-National

$887

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 5

IAD8:20 pmWashington, D.C. Dulles Intl

32h 00m

1 stop

LHR9:20 amLondon Heathrow

Oct 8

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$620

Scandinavian Airlines

Oct 2

IAD8:20 pmWashington, D.C. Dulles Intl

12h 15m

1 stop

LHR1:35 pmLondon Heathrow

Oct 4

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$638

Scandinavian Airlines

Jan 16

IAD8:30 pmWashington, D.C. Dulles Intl

15h 30m

2 stops

LHR5:00 pmLondon Heathrow

Jan 17

LHR7:30 pmLondon Heathrow

26h 45m

1 stop

IAD5:15 pmWashington, D.C. Dulles Intl

$647

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

Sat 11/7

5:25 pm-6:55 pm

1 stop20h 30m

London Heathrow

Fri 11/13

6:30 pm-3:15 pm

1 stop25h 45m

$616

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Mon 9/21

10:35 pm-10:55 pm

1 stop19h 20m

London Heathrow

Tue 9/29

7:50 pm-3:10 pm

1 stop24h 20m

$618

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Mon 10/5

8:20 pm-9:20 am

1 stop32h 00m

London Heathrow

Thu 10/8

6:40 am-5:00 pm

2 stops15h 20m

$620

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Fri 10/9

8:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

Mon 10/19

6:40 am-5:00 pm

1 stop15h 20m

$622

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Fri 11/20

7:40 pm-10:50 am

1 stop10h 10m

London Heathrow

Mon 11/23

12:15 pm-6:30 pm

1 stop11h 15m

$635

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Wed 12/2

7:40 pm-7:30 pm

1 stop18h 50m

London Heathrow

Thu 12/24

12:15 pm-6:30 pm

1 stop11h 15m

$649

Quickest round-trip

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Wed 12/9

6:55 pm-7:05 am

Nonstop7h 10m

London Heathrow

Tue 12/15

1:50 pm-5:05 pm

Nonstop8h 15m

$673

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Sun 11/1

7:40 pm-9:35 pm

2 stops20h 55m

London Heathrow

Tue 11/10

7:05 am-6:40 pm

2 stops16h 35m

$674

Washington, D.C.London

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

IADLHR

Washington, D.C. Dulles Intl

Wed 10/28

8:40 pm-6:30 pm

2 stops17h 50m

London Heathrow

Tue 11/3

8:35 pm-6:30 pm

1 stop26h 55m

$681

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 1/18

6:55 pm-7:05 am

Nonstop7h 10m

London Heathrow

Mon 1/25

1:50 pm-5:05 pm

Nonstop8h 15m

$711

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 $747 to $1,067.
The lowest price recently found on this route was $616.

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 $685. 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 $737.

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 $907. 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 $959.

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 $885 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 $848 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	$291
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 $291. The best round-trip flight deal from Washington, D.C. to London Heathrow Airport found on momondo in the last 72 hours is $616.

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 2,371 reviews	Search TAP AIR PORTUGAL flights
Virgin Atlantic	PriceFrom $449	Free Cancellation	Rating 7.4 695 reviews	Search Virgin Atlantic flights
United Airlines	PriceFrom $462	Free Cancellation	Rating 7.4 10,115 reviews	Search United Airlines flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 6.9 733 reviews	Search Icelandair flights
Delta	PriceFrom $530	Free Cancellation	Rating 7.8 8,513 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 1,961 reviews	Search Scandinavian Airlines flights
Iberia	PriceFrom $575	Free Cancellation	Rating 7.0 3,258 reviews	Search Iberia flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,519 reviews	Search Air Canada flights
Air France	PriceFrom $581	Free Cancellation	Rating 7.5 1,648 reviews	Search Air France flights
British Airways	PriceFrom $593	Free Cancellation	Rating 6.7 8,184 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 6 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 1,562 KLM reviews on momondo, the average score is 7.8/10. KLM flies from Washington, D.C. to London Heathrow Airport about 6 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 use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

Finding the right flight to London from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

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 $405

Flights to London Stansted Airportfrom $490

Flights to London City Airportfrom $643

Flights to London Luton Airportfrom $537

Flights to Glasgow Intl Airportfrom $535

Flights to Belfast Intl Airportfrom $665

Flights to London Southend Airportfrom $723

Flights to Belfast City Airportfrom $565

Cheap flights from Washington, D.C. to London from $291

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 1/10. 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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JetBlue flights from Washington, D.C. to London Heathrow Airport

Our best JetBlue 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 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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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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