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

New York (JFK) has the shortest average layover time for this route: 1h 27m.

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

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

What airlines fly to London Heathrow Airport?

JetBlue, British Airways and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Washington, D.C. Reagan-National Airport according to our data. JetBlue is the first choice among our users, with 48% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 7 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

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

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

Flights connecting via New York (JFK) have the shortest average one-way travel time: 9h 49m.

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

Flights via Toronto (YYZ) offer the lowest average round-trip price of $805.

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

As of April 2026, there are 7 operators available to choose from for flights from Washington, D.C. Reagan-National Airport 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.

$357 Cheap Flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Reagan-National Airport and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $876 to $672. The lowest price recently found on this route was $705.

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Find the cheapest flights from Washington, D.C. Reagan-National Airport to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:45 pm - 6:30 am

DCA

LHR

12h 45m

1 stop

9:30 am - 3:39 pm

LHR

DCA

11h 09m

1 stop

$705Air Canada

Mon, May 11 - Tue, Jun 2

4:20 pm - 10:00 am

DCA

LHR

12h 40m

1 stop

9:30 am - 3:39 pm

LHR

DCA

11h 09m

1 stop

$707Air Canada

Sun, May 10 - Fri, Jun 5

12:45 pm - 6:30 am

DCA

LHR

12h 45m

1 stop

12:05 pm - 7:58 pm

LHR

DCA

12h 53m

1 stop

$708Air Canada

Mon, May 11 - Wed, Jun 3

4:20 pm - 10:00 am

DCA

LHR

12h 40m

1 stop

8:30 am - 6:13 pm

LHR

DCA

14h 43m

1 stop

$711Air Canada

Tue, May 12 - Thu, Jun 4

6:00 am - 8:45 pm

DCA

LHR

9h 45m

1 stop

7:40 am - 10:59 pm

LHR

DCA

20h 19m

2 stops

$718Multiple Airlines

Thu, Apr 23 - Wed, May 6

4:20 pm - 10:00 am

DCA

LHR

12h 40m

1 stop

9:30 am - 3:39 pm

LHR

DCA

11h 09m

1 stop

$721Air Canada

Tue, May 19 - Fri, May 29

12:45 pm - 6:30 am

DCA

LHR

12h 45m

1 stop

2:05 pm - 9:55 pm

LHR

DCA

12h 50m

1 stop

$736Air Canada

Mon, May 18 - Fri, May 29

6:00 am - 8:45 pm

DCA

LHR

9h 45m

1 stop

11:55 am - 10:59 pm

LHR

DCA

16h 04m

1 stop

$739JetBlue

Thu, Apr 23 - Wed, May 6

6:55 pm - 11:50 am

DCA

LHR

11h 55m

1 stop

2:05 pm - 9:55 pm

LHR

DCA

12h 50m

1 stop

$742Air Canada

Sun, May 17 - Fri, May 29

4:20 pm - 10:00 am

DCA

LHR

12h 40m

1 stop

2:05 pm - 9:55 pm

LHR

DCA

12h 50m

1 stop

$745Air Canada

Tue, May 19 - Fri, Jun 5

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

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

Scandinavian Airlines

Apr 27

DCA11:00 amWashington, D.C. Reagan-National

17h 35m

2 stops

LHR9:35 amLondon Heathrow

May 4

LHR7:50 pmLondon Heathrow

31h 51m

2 stops

DCA10:41 pmWashington, D.C. Reagan-National

$785

Scandinavian Airlines

Apr 20

DCA11:00 amWashington, D.C. Reagan-National

17h 35m

2 stops

LHR9:35 amLondon Heathrow

Apr 23

LHR7:05 amLondon Heathrow

20h 36m

2 stops

DCA10:41 pmWashington, D.C. Reagan-National

$789

Scandinavian Airlines

Apr 20

DCA11:00 amWashington, D.C. Reagan-National

17h 35m

2 stops

LHR9:35 amLondon Heathrow

Apr 29

LHR7:50 pmLondon Heathrow

31h 51m

2 stops

DCA10:41 pmWashington, D.C. Reagan-National

$794

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

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

JetBlue

Apr 23

DCA6:00 amWashington, D.C. Reagan-National

9h 45m

1 stop

LHR8:45 pmLondon Heathrow

May 6

LHR11:55 amLondon Heathrow

16h 04m

1 stop

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

$739

JetBlue

Apr 27

DCA6:00 amWashington, D.C. Reagan-National

9h 45m

1 stop

LHR8:45 pmLondon Heathrow

May 4

LHR11:55 amLondon Heathrow

16h 04m

1 stop

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

$767

JetBlue

Apr 23

DCA6:00 amWashington, D.C. Reagan-National

9h 45m

1 stop

LHR8:45 pmLondon Heathrow

May 6

LHR8:15 amLondon Heathrow

19h 44m

1 stop

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

$768

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/11

12:45 pm-6:30 am

1 stop12h 45m

London Heathrow

Tue 6/2

9:30 am-3:39 pm

1 stop11h 09m

$705

Quickest round-trip

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/10

4:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Fri 6/5

9:30 am-3:39 pm

1 stop11h 09m

$707

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/11

12:45 pm-6:30 am

1 stop12h 45m

London Heathrow

Wed 6/3

12:05 pm-7:58 pm

1 stop12h 53m

$708

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/12

4:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Thu 6/4

8:30 am-6:13 pm

1 stop14h 43m

$711

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 4/23

6:00 am-8:45 pm

1 stop9h 45m

London Heathrow

Wed 5/6

7:40 am-10:59 pm

2 stops20h 19m

$718

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/19

4:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Fri 5/29

9:30 am-3:39 pm

1 stop11h 09m

$721

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/18

12:45 pm-6:30 am

1 stop12h 45m

London Heathrow

Fri 5/29

2:05 pm-9:55 pm

1 stop12h 50m

$736

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 4/23

6:00 am-8:45 pm

1 stop9h 45m

London Heathrow

Wed 5/6

11:55 am-10:59 pm

1 stop16h 04m

$739

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/17

6:55 pm-11:50 am

1 stop11h 55m

London Heathrow

Fri 5/29

2:05 pm-9:55 pm

1 stop12h 50m

$742

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/19

4:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Fri 6/5

2:05 pm-9:55 pm

1 stop12h 50m

$745

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. Reagan-National Airport 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

Layovers

What is the typical price of a round-trip flight between Washington, D.C. Reagan-National Airport and London Heathrow Airport?

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

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Washington, D.C. Reagan-National Airport, with most prices found around $644. If you’re not able to fly to London Heathrow Airport in November, then August is your next best option. Flight prices from Washington, D.C. Reagan-National Airport to London Heathrow Airport during August average around $665.

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 $760. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $881.

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. Reagan-National Airport to London Heathrow Airport in the afternoon for as low as $804. 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 $820.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $853 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. Reagan-National Airport for as low as $658 on momondo.

Can stopping save me money on Washington, D.C. Reagan-National Airport to London Heathrow Airport flights?

You could potentially save up to 6% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to London Heathrow Airport flight.

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

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

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

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

Fastest flight time	9h 30m
Direct flights	None

The fastest flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport takes 9h 30m

There are no direct flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport. There are no popular flight routes from Washington, D.C. Reagan-National Airport to London Heathrow Airport.

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

How far is Washington, D.C. Reagan-National to London Heathrow by plane?
The straight-line distance from Washington, D.C. Reagan-National to London Heathrow is 3651.9 mi. A reasonable flight in good conditions will take 9h 30m.
When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport?
Prices for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport?
As of April 2026, there are 7 operators available to choose from for flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport.
How old do you have to be to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport 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 airline from Washington, D.C. Reagan-National Airport to London Heathrow Airport?
Based on momondo bookings for flights between Washington, D.C. Reagan-National Airport and London Heathrow Airport, the leading airline is JetBlue, making up 40% of the total bookings. Other popular airlines include British Airways with 17%, American Airlines with 14%, and United Airlines with 12%.

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

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.1 11,548 reviews	Search American Airlines flights
Iberia	PriceFrom $527	Free Cancellation	Rating 7.0 3,164 reviews	Search Iberia flights
British Airways	PriceFrom $529	Free Cancellation	Rating 6.7 7,841 reviews	Search British Airways flights
Delta	PriceFrom $558	Free Cancellation	Rating 7.9 8,369 reviews	Search Delta flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 9,533 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom $626	Free Cancellation	Rating 7.5 685 reviews	Search Virgin Atlantic flights
JetBlue	PriceFrom $639	Free Cancellation	Rating 7.2 2,911 reviews	Search JetBlue flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Stratford-upon-Avon

Crawley

Hayes

Wembley

Stansted

Croydon

Dartford

Brentwood

Guildford

Cobham

Folkestone

Romford

Harrow

Watford

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?

Yes. All flights to London from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Yes. momondo can track prices for Washington, D.C. to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Flights to London Gatwick Airportfrom $475

Flights to London City Airportfrom $645

Flights to London Stansted Airportfrom $508

Flights to London Luton Airportfrom $545

Flights to Glasgow Intl Airportfrom $579

Flights to Belfast Intl Airportfrom $704

Flights to London Southend Airportfrom $680

Flights to Belfast City Airportfrom $687

Cheap flights from Washington, D.C. Reagan-National Airport to London from $357

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

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

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

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

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Reagan-National Airport to London Heathrow Airport

What is the typical price of a round-trip flight between Washington, D.C. Reagan-National Airport and London Heathrow Airport?

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

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

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

How far in advance should I book a flight to London Heathrow Airport?

Can stopping save me money on Washington, D.C. Reagan-National Airport to London Heathrow Airport flights?

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

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

What airlines fly to London Heathrow Airport?

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

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

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

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

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

Cheap Washington, D.C. Reagan-National Airport to London Heathrow Airport (DCA to LHR) flight deals and tips

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

Fastest flight time

Direct flights

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

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

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

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Why use momondo?

An easier way to manage your London Heathrow Airport trip

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

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