How long is the flight from London Heathrow Airport to Washington, D.C.?

Delta, Virgin Atlantic, and KLM can get you from London Heathrow Airport to Washington, D.C. in just under 12h. Your travel time can differ by up to 3h 58m. The distance between London Heathrow Airport and Washington, D.C. is about 3664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?

Currently priced at $528, American Airlines will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $544 and $556, respectively. American Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?

For one-way options, check prices for Virgin Atlantic. According to our data, you can fly for as low as $334. Users have also found prices from $412 and $434 on Aer Lingus and British Airways, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from London Heathrow Airport to Washington, D.C.?

When deciding which route to take from London Heathrow Airport to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.

What are the cheapest flights from London Heathrow Airport to Washington, D.C.?

Looking at all options, your cheapest flight can be booked for $466. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $408 on average, our data indicates $2,243 when flying from London Heathrow Airport to Washington, D.C..

What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Washington, D.C. on time: Air Canada (74%), Austrian Airlines (74%), Copa Airlines (74%).

What are the most popular airlines that fly from London Heathrow Airport to Washington, D.C.?

When booking a flight from London Heathrow Airport to Washington, D.C., you may want to consider flying on British Airways, Lufthansa or United Airlines as they are the most popular for this route.

Most accurate provider : When it comes to deals on London Heathrow Airport-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London Heathrow Airport-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Heathrow to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Heathrow to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Washington, D.C..

Can I find deals for business class flights from Heathrow to Washington, D.C.?

Yes. Cheapflights offers flight deals from Heathrow to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$348+ Cheap Flights from London Heathrow Airport to Washington, D.C.

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Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in September or January, booked 68 days in advance, depart on a Wednesday or Friday and return on a Wednesday

Cheap flight deals from Heathrow to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.

Mon 11/161:20 pm -

Nonstop8h 40m

Tue 12/16:55 pm -

Nonstop7h 25m

Deal found 10/17

$536

Sun 12/68:35 pm -

1 stop26h 55m

Sat 12/127:40 pm -

1 stop10h 10m

Deal found 10/16

$537

Thu 10/298:35 pm -

1 stop26h 55m

Wed 12/27:40 pm -

1 stop10h 10m

Deal found 10/16

$538

Thu 12/312:15 pm -

1 stop11h 15m

Thu 12/107:40 pm -

1 stop18h 50m

Deal found 10/18

$539

Sat 12/512:15 pm -

1 stop11h 15m

Sat 12/127:40 pm -

1 stop10h 10m

Deal found 10/16

$540

Thu 10/298:35 pm -

1 stop26h 55m

Tue 12/87:40 pm -

1 stop18h 50m

Deal found 10/14

$541

Mon 11/2312:15 pm -

Nonstop8h 25m

Tue 12/19:45 pm -

Nonstop7h 15m

Deal found 10/18

$542

Mon 11/163:50 pm -

1 stop11h 36m

Tue 12/16:50 pm -

1 stop10h 05m

Deal found 10/17

$542

Thu 10/298:35 pm -

1 stop26h 55m

Sat 1/97:40 pm -

1 stop18h 50m

Deal found 10/16

$543

Tue 12/18:35 pm -

1 stop26h 55m

Sun 12/67:40 pm -

1 stop10h 10m

Deal found 10/19

$544

Mon 11/166:30 pm -

1 stop25h 10m

Tue 12/15:25 pm -

1 stop23h 10m

Deal found 10/16

$545

Mon 11/234:00 pm -

1 stop13h 41m

Sat 11/2811:37 am -

1 stop15h 08m

Deal found 10/18

$546

Best flights from Heathrow to Washington, D.C.
Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.

Mon 11/166:30 am -

2 stops15h 58m

Tue 12/112:35 pm -

1 stop26h 35m

Deal found 10/18

$594

Thu 11/128:55 am -

1 stop13h 25m

Thu 11/2612:26 pm -

2 stops12h 59m

Deal found 10/15

$626

Sun 12/138:40 am -

1 stop12h 00m

Thu 1/78:45 pm -

Nonstop7h 25m

Deal found 10/15

$634

Wed 1/61:45 pm -

1 stop32h 15m

Mon 1/115:28 pm -

2 stops14h 32m

Deal found 10/15

$663

Tue 12/1512:15 pm -

1 stop11h 25m

Sun 12/277:40 pm -

1 stop10h 10m

Deal found 10/14

$686

Fri 12/112:10 pm -

1 stop12h 20m

Fri 1/156:55 pm -

Nonstop7h 10m

Deal found 10/14

$701

Thu 12/247:05 am -

2 stops15h 10m

Mon 12/288:30 pm -

2 stops20h 05m

Deal found 10/15

$802

Wed 11/188:40 am -

2 stops14h 19m

Wed 11/255:02 pm -

1 stop10h 33m

Deal found 10/18

$595

Fri 12/112:00 pm -

Nonstop8h 40m

Fri 1/86:30 pm -

1 stop11h 00m

Deal found 10/18

$652

Thu 11/196:30 am -

1 stop14h 25m

Tue 12/16:55 pm -

Nonstop7h 25m

Deal found 10/15

$602

Mon 11/161:45 pm -

2 stops36h 57m

Mon 11/236:10 am -

1 stop20h 45m

Deal found 10/17

$665

Thu 12/312:15 pm -

1 stop11h 25m

Mon 12/77:40 pm -

1 stop10h 10m

Deal found 10/17

$695

Fri 12/111:10 pm -

1 stop12h 34m

Fri 1/85:19 pm -

1 stop10h 56m

Deal found 10/18

$702

Thu 11/199:50 am -

1 stop13h 09m

Mon 11/302:00 pm -

1 stop11h 25m

Deal found 10/14

$659

Thu 12/36:50 am -

2 stops31h 54m

Mon 12/76:10 am -

2 stops24h 05m

Deal found 10/17

$672

Wed 11/181:05 pm -

1 stop14h 21m

Tue 11/2412:31 pm -

1 stop12h 54m

Deal found 10/17

$613

Mon 11/2312:35 pm -

1 stop12h 24m

Sun 12/65:10 pm -

1 stop9h 40m

Deal found 10/16

$703

Sun 11/155:20 pm -

1 stop19h 39m

Wed 11/181:20 pm -

1 stop15h 35m

Deal found 10/15

$674

Fri 12/2512:05 pm -

Nonstop8h 35m

Sun 1/316:20 pm -

Nonstop7h 20m

Deal found 10/15

$695

Tue 11/241:20 pm -

Nonstop8h 40m

Mon 11/306:55 pm -

Nonstop7h 25m

Deal found 10/17

$660

Mon 11/231:50 pm -

Nonstop8h 15m

Mon 11/306:55 pm -

Nonstop7h 10m

Deal found 10/16

$768

Wed 12/212:05 pm -

Nonstop8h 35m

Sun 12/66:20 pm -

Nonstop7h 20m

Deal found 10/17

$700

Wed 11/2511:45 am -

2 stops16h 42m

Thu 1/76:10 pm -

1 stop12h 30m

Deal found 10/17

$709

Thu 11/199:40 am -

1 stop15h 19m

Sun 11/292:00 pm -

1 stop11h 25m

Deal found 10/15

$661

Fri 1/88:00 am -

2 stops18h 33m

Thu 1/1412:15 pm -

2 stops42h 00m

Deal found 10/15

$711

Thu 11/1212:40 pm -

1 stop13h 44m

Thu 11/265:10 pm -

1 stop10h 50m

Deal found 10/15

$723

Tue 11/39:55 am -

1 stop12h 05m

Tue 11/176:55 pm -

Nonstop7h 10m

Deal found 10/16

$823

Thu 12/248:10 pm -

1 stop24h 50m

Mon 2/15:00 pm -

1 stop10h 05m

Deal found 10/15

$691

Thu 2/259:00 am -

1 stop32h 19m

Mon 3/17:00 am -

1 stop9h 20m

Deal found 10/17

$714

Wed 11/113:50 pm -

1 stop11h 36m

Thu 11/196:05 am -

1 stop20h 10m

Deal found 10/18

$695

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated October 19, 2026 and is based on user searches.

Thu 10/298:35 pm -

1 stop26h 55m

Mon 11/167:40 pm -

1 stop10h 10m

Deal found 10/14

$537

Thu 10/298:35 pm -

1 stop26h 55m

Wed 12/27:40 pm -

1 stop10h 10m

Deal found 10/16

$538

Thu 10/298:35 pm -

1 stop26h 55m

Tue 12/87:40 pm -

1 stop18h 50m

Deal found 10/14

$541

Thu 10/298:35 pm -

1 stop26h 55m

Sat 1/97:40 pm -

1 stop18h 50m

Deal found 10/16

$543

Thu 11/123:50 pm -

1 stop11h 36m

Thu 11/265:30 pm -

1 stop11h 25m

Deal found 10/15

$558

Thu 11/123:50 pm -

1 stop11h 36m

Wed 11/255:02 pm -

1 stop11h 23m

Deal found 10/14

$586

Mon 11/161:20 pm -

Nonstop8h 40m

Tue 12/16:55 pm -

Nonstop7h 25m

Deal found 10/17

$536

Mon 11/163:50 pm -

1 stop11h 36m

Tue 12/16:50 pm -

1 stop10h 05m

Deal found 10/17

$542

Mon 11/166:30 pm -

1 stop25h 10m

Tue 12/15:25 pm -

1 stop23h 10m

Deal found 10/16

$544

Fri 11/2012:25 pm -

1 stop13h 05m

Sun 12/1310:30 pm -

1 stop19h 10m

Deal found 10/14

$550

Mon 11/2312:15 pm -

Nonstop8h 25m

Tue 12/19:45 pm -

Nonstop7h 15m

Deal found 10/18

$542

Mon 11/234:00 pm -

1 stop13h 41m

Sat 11/2811:37 am -

1 stop15h 08m

Deal found 10/18

$546

One-way flights from Heathrow to Washington, D.C.
Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.

Sat 4/31:05 pm -

1 stop14h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/15

$348

Wed 12/1612:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$394

Tue 12/1512:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/17

$395

Mon 12/148:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/17

$397

Sun 12/138:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/18

$400

Wed 12/912:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/15

$403

Mon 4/59:25 pm -

1 stop29h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$406

Mon 1/118:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/15

$407

Sun 2/148:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/17

$408

Wed 2/312:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/16

$409

Mon 2/158:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/17

$411

Fri 11/206:00 am -

1 stop19h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/19

$498

Find flight deals from Heathrow to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$536 (Ticket)
One-way from	$348
Popular in	May
Cheapest in	September
Average price	$706
Good round-trip deal	$650 or less
Good one-way deal	$543 or less

Provider with most accurate pricing for London Heathrow-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for London Heathrow-Washington, D.C. (WAS) flights.

Search Deals

From London Heathrow to Washington, D.C. (WAS)

Search Deals

One-way flight from London Heathrow to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from London Heathrow to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Wed 1/6

8:35 pm-6:40 pm

1 stop27h 05m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$473

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sun 1/10

12:25 pm-8:35 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$569

LondonWashington, D.C.

LHR London Heathrow - DCA Washington, D.C. Reagan-National

LHRDCA

London Heathrow

Fri 11/13

12:20 pm-10:15 pm

1 stop14h 55m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$572

LondonWashington, D.C.

LHR London Heathrow - DCA Washington, D.C. Reagan-National

LHRDCA

London Heathrow

Thu 11/12

12:20 pm-10:15 pm

1 stop14h 55m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$573

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Fri 1/15

6:30 am-7:56 pm

2 stops18h 26m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$576

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Fri 12/11

12:15 pm-3:40 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$577

Quickest round-trip

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Fri 12/11

1:50 pm-5:05 pm

Nonstop8h 15m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$578

LondonWashington, D.C.

LHR London Heathrow - DCA Washington, D.C. Reagan-National

LHRDCA

London Heathrow

Thu 1/28

4:30 pm-11:59 pm

1 stop12h 29m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$582

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 12/16

12:15 pm-3:40 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$584

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Thu 12/24

12:15 pm-3:40 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$588

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 59 resultsSorted by cheapest first

...

Compare providers for flights from Heathrow to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Washington, D.C. in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
Ovago	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London Heathrow Airport-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London Heathrow Airport-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Heathrow with our price prediction graph.

LHR-WAS

LHR-IAD

LHR-DCA

LHR-BWI

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Washington, D.C.

LHR-WAS

LHR-IAD

LHR-DCA

LHR-BWI

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $652). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $780). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Washington, D.C. as you normally would.

Weekly flight availability from London Heathrow Airport to Washington, D.C.

The most flights from LHR to WAS are scheduled on a Wednesday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 on average).

How much does it cost to fly round-trip from London Heathrow Airport to Washington, D.C.?

Airfare is below average for this route at the moment.

London Heathrow Airport to Washington, D.C. flights typically cost between $606 and $872 in November.
The cheapest round-trip price found within the last 5 days was $536 on Virgin Atlantic (Nov 16-Dec 1).

What’s the top layover airport for flights from London Heathrow Airport to Washington, D.C.?

Boston (BOS) – chosen by Cheapflights users on 33% of 1-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Washington, D.C.?

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $446.

What’s the fastest layover option from London Heathrow Airport to Washington, D.C.?

Flights via New York (JFK) have the shortest average one-way travel time for 1-stop routes: 11h 39m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Washington, D.C.?

Flights via Boston (BOS) offer the fastest connection on this route, with an average layover time of 1h 55m.

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

About 16% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 140 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

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

Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

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

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

The best insider tips for London Heathrow Airport to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Washington, D.C. trip

Our travel experts

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Ramsey Qubein

Expert on LHR and IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from London Heathrow Airport to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Delta

7.8

Good

8,649 reviews

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

United Airlines

7.3

Good

10,389 reviews

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

American Airlines

7.0

Good

12,183 reviews

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Lufthansa

6.8

Okay

8,282 reviews

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

British Airways

6.7

Okay

8,266 reviews

Delta

7.8

Good

8,649 reviews

Reviews

1 / 20

6.0

Good

Ellen,Oct 2026

GRR - ATL

The flight was delayed more then 30 minutes after I hurried and stressed to get to my connecting gate in Atlanta.

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C.?
Delta, Virgin Atlantic, and KLM can get you from London Heathrow Airport to Washington, D.C. in just under 12h. Your travel time can differ by up to 3h 58m. The distance between London Heathrow Airport and Washington, D.C. is about 3664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?
Currently priced at $528, American Airlines will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Lufthansa - these airlines can fly you to your destination from $544 and $556, respectively. American Airlines is 25% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?
For one-way options, check prices for Virgin Atlantic. According to our data, you can fly for as low as $334. Users have also found prices from $412 and $434 on Aer Lingus and British Airways, respectively.
What are the most popular routes from London Heathrow Airport to Washington, D.C.?
When deciding which route to take from London Heathrow Airport to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.
What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Washington, D.C. on time: Air Canada (74%), Austrian Airlines (74%), Copa Airlines (74%).
What are the cheapest flights from London Heathrow Airport to Washington, D.C.?
Looking at all options, your cheapest flight can be booked for $466. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $408 on average, our data indicates $2,243 when flying from London Heathrow Airport to Washington, D.C..
Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Heathrow to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Heathrow to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Washington, D.C..
Can I find deals for business class flights from Heathrow to Washington, D.C.?
Yes. Cheapflights offers flight deals from Heathrow to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?
Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $652). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $780). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 10 airlines flying from Heathrow to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$528	Average$866	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$544	Average$810	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$556	Average$740	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$566	Average$741	FlexibilityNo cancel fee	On-time70%
Austrian Airlines	Cheapest$567	Average$750	FlexibilityNo cancel fee	On-time78%
Virgin Atlantic	Cheapest$581	Average$754	FlexibilityNo cancel fee	On-time72%
Delta	Cheapest$581	Average$872	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$582	Average$730	FlexibilityNo cancel fee	On-time77%
KLM	Cheapest$583	Average$836	FlexibilityNo cancel fee	On-time75%
Aer Lingus	Cheapest$658	Average$783	FlexibilityNo cancel fee	On-timeN/A

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$348+ Cheap flights from Heathrow (LHR) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Heathrow to Washington, D.C. with Cheapflights

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Cheap flight deals from Heathrow to Washington, D.C.

Cheapest flights from Heathrow to Washington, D.C.Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.

Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.

Best flights from Heathrow to Washington, D.C.Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.

Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.

Last-minute flights from Heathrow to Washington, D.C.Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated October 19, 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated October 19, 2026 and is based on user searches.

One-way flights from Heathrow to Washington, D.C.Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.

Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.

Find flight deals from Heathrow to Washington, D.C.

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

Compare providers for flights from Heathrow to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Washington, D.C. in October.

Best time to book a flight from Heathrow to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Heathrow with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

What is the cheapest time of day to fly from LHR to WAS?

Find hourly flight availability from Heathrow to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 19, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Washington, D.C. as you normally would.

Weekly flight availability from London Heathrow Airport to Washington, D.C.

The most flights from LHR to WAS are scheduled on a Wednesday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 on average).

How much does it cost to fly round-trip from London Heathrow Airport to Washington, D.C.?

Airfare is below average for this route at the moment.

London Heathrow Airport to Washington, D.C. flights typically cost between $606 and $872 in November.The cheapest round-trip price found within the last 5 days was $536 on Virgin Atlantic (Nov 16-Dec 1).

What’s the top layover airport for flights from London Heathrow Airport to Washington, D.C.?

Share of 1-stop round-trip flights from London Heathrow Airport to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Boston (BOS) – chosen by Cheapflights users on 33% of 1-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Washington, D.C.?

Average round-trip fare for 1-stop flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $446.

What’s the fastest layover option from London Heathrow Airport to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from London Heathrow Airport to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via New York (JFK) have the shortest average one-way travel time for 1-stop routes: 11h 39m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Washington, D.C.?

Average layover duration for 1-stop one-way flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Boston (BOS) offer the fastest connection on this route, with an average layover time of 1h 55m.

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

About 16% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 140 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

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

Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

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

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

The best insider tips for London Heathrow Airport to Washington, D.C. flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Washington, D.C. trip

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Reviews of airlines servicing Washington, D.C.

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C.?

What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?

What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?

What are the most popular routes from London Heathrow Airport to Washington, D.C.?

What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?

What are the cheapest flights from London Heathrow Airport to Washington, D.C.?

Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?

How can I find direct flights from Heathrow to Washington, D.C.?

Can I find deals for business class flights from Heathrow to Washington, D.C.?

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

Cheapest flights from Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2026.

Best flights from Heathrow to Washington, D.C.
Discover carefully curated flight deals from Heathrow to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 19, 2026.

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated October 19, 2026 and is based on user searches.

One-way flights from Heathrow to Washington, D.C.
Search for one-way flight options from Heathrow to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated October 19, 2026.

London Heathrow Airport to Washington, D.C. flights typically cost between $606 and $872 in November.
The cheapest round-trip price found within the last 5 days was $536 on Virgin Atlantic (Nov 16-Dec 1).