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

British Airways, KLM, and Delta can get you from London Heathrow Airport to Washington, D.C. in just under 8h 25m. Your travel time will be generally consistent. The distance between London Heathrow Airport and Washington, D.C. is about 3664 mi. Most flights are nonstop.

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

Currently priced at $556, Lufthansa will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and British Airways - these airlines can fly you to your destination from $559 and $566, respectively. Lufthansa is 20% 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 $407 and $412 on Icelandair and Aer Lingus, 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 $469. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $431 on average, our data indicates $1,902 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 (80%), Austrian Airlines (80%), Copa Airlines (80%).

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.

$317+ 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 January or September, booked 68 days in advance, depart on a Wednesday or Thursday 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 September 8, 2026.

Thu 9/176:30 am -

1 stop14h 05m

Sun 9/207:34 pm -

2 stops15h 41m

Deal found 9/8

$573

Thu 9/179:55 am -

1 stop10h 40m

Sat 10/312:18 pm -

1 stop13h 52m

Deal found 9/8

$574

Thu 10/159:25 pm -

1 stop26h 55m

Fri 10/308:40 pm -

1 stop10h 10m

Deal found 9/8

$576

Fri 9/184:00 pm -

Nonstop8h 25m

Sat 10/310:05 pm -

Nonstop7h 35m

Deal found 9/8

$577

Fri 10/98:40 am -

1 stop11h 55m

Sun 10/189:45 pm -

1 stop11h 00m

Deal found 9/7

$578

Wed 11/1810:35 am -

1 stop11h 44m

Mon 1/185:17 pm -

1 stop9h 53m

Deal found 9/8

$578

Mon 9/213:50 pm -

Nonstop8h 25m

Wed 11/116:55 pm -

Nonstop7h 25m

Deal found 9/5

$580

Wed 9/164:05 pm -

1 stop12h 30m

Fri 10/211:10 am -

1 stop14h 10m

Deal found 9/4

$580

Mon 9/143:50 pm -

Nonstop8h 25m

Sun 9/2710:05 pm -

Nonstop7h 35m

Deal found 9/7

$581

Sat 9/123:50 pm -

1 stop12h 09m

Sat 9/265:05 pm -

1 stop10h 45m

Deal found 9/5

$581

Wed 10/1411:30 am -

1 stop13h 05m

Fri 10/306:59 pm -

1 stop32h 06m

Deal found 9/6

$582

Sat 10/38:20 am -

1 stop13h 12m

Sat 10/105:05 pm -

1 stop10h 45m

Deal found 9/8

$582

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 September 8, 2026.

Fri 9/182:00 pm -

Nonstop8h 25m

Mon 9/217:15 pm -

Nonstop7h 30m

Deal found 9/5

$580

Sat 10/103:50 pm -

Nonstop8h 25m

Sat 1/306:55 pm -

Nonstop7h 25m

Deal found 9/7

$580

Tue 10/133:50 pm -

Nonstop8h 25m

Sun 10/1810:05 pm -

Nonstop7h 35m

Deal found 9/8

$581

Sat 9/199:40 am -

1 stop13h 08m

Sat 9/265:05 pm -

1 stop12h 15m

Deal found 9/7

$586

Fri 10/238:40 am -

1 stop13h 05m

Fri 10/309:10 pm -

1 stop30h 55m

Deal found 9/8

$629

Thu 10/13:00 pm -

1 stop11h 59m

Thu 10/86:00 am -

1 stop10h 40m

Deal found 9/3

$585

Thu 10/89:40 am -

1 stop11h 39m

Sat 10/172:00 pm -

1 stop11h 25m

Deal found 9/3

$585

Wed 9/164:20 pm -

1 stop11h 39m

Tue 12/86:30 pm -

1 stop12h 10m

Deal found 9/6

$586

Sat 10/36:50 am -

1 stop11h 40m

Sat 10/108:20 pm -

1 stop11h 40m

Deal found 9/4

$636

Fri 10/164:20 pm -

1 stop30h 13m

Sun 11/16:00 am -

1 stop22h 00m

Deal found 9/7

$586

Tue 10/204:05 pm -

1 stop12h 32m

Tue 10/278:50 pm -

1 stop10h 50m

Deal found 9/7

$587

Thu 10/223:00 pm -

1 stop12h 20m

Wed 11/182:54 pm -

1 stop10h 21m

Deal found 9/7

$587

Tue 11/39:30 am -

1 stop11h 25m

Sun 11/88:37 am -

2 stops17h 33m

Deal found 9/3

$637

Mon 9/213:15 pm -

1 stop13h 29m

Mon 4/261:30 pm -

1 stop11h 50m

Deal found 9/7

$587

Fri 9/119:15 am -

1 stop11h 52m

Tue 9/154:59 pm -

1 stop10h 01m

Deal found 9/4

$588

Fri 10/239:30 am -

1 stop11h 35m

Sun 11/158:36 am -

2 stops17h 34m

Deal found 9/3

$638

Wed 10/71:25 pm -

1 stop15h 22m

Sun 10/1110:16 am -

1 stop15h 29m

Deal found 9/5

$587

Sat 11/149:30 am -

1 stop11h 25m

Wed 11/1812:37 pm -

2 stops13h 33m

Deal found 9/5

$639

Tue 11/312:55 pm -

2 stops16h 36m

Fri 11/274:50 pm -

1 stop11h 10m

Deal found 9/3

$719

Fri 10/212:30 pm -

1 stop12h 03m

Tue 10/139:30 pm -

Nonstop7h 20m

Deal found 9/7

$680

Wed 11/187:30 am -

1 stop12h 05m

Wed 12/28:15 am -

2 stops17h 55m

Deal found 9/6

$639

Tue 11/39:55 am -

1 stop12h 05m

Fri 11/276:55 pm -

Nonstop7h 10m

Deal found 9/3

$680

Thu 12/179:00 am -

1 stop13h 00m

Sun 1/310:15 pm -

Nonstop7h 35m

Deal found 9/3

$662

Tue 11/249:55 am -

1 stop12h 19m

Wed 12/26:55 pm -

Nonstop7h 10m

Deal found 9/7

$680

Thu 12/244:20 pm -

Nonstop8h 55m

Thu 1/710:15 pm -

Nonstop7h 35m

Deal found 9/4

$667

Wed 10/73:00 pm -

1 stop12h 17m

Sun 10/119:35 pm -

Nonstop7h 20m

Deal found 9/5

$681

Wed 10/212:05 pm -

1 stop12h 45m

Sun 10/253:30 pm -

1 stop12h 25m

Deal found 9/7

$671

Thu 10/224:25 pm -

Nonstop8h 15m

Mon 10/261:34 pm -

1 stop16h 06m

Deal found 9/4

$699

Thu 10/13:20 pm -

1 stop11h 39m

Thu 10/812:50 pm -

1 stop12h 40m

Deal found 9/3

$672

Tue 10/1311:05 am -

1 stop14h 58m

Fri 10/2311:55 am -

2 stops14h 20m

Deal found 9/3

$672

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated September 8, 2026 and is based on user searches.

Sat 9/123:50 pm -

1 stop12h 09m

Sat 9/265:05 pm -

1 stop10h 45m

Deal found 9/5

$581

Mon 9/143:50 pm -

Nonstop8h 25m

Sun 9/2710:05 pm -

Nonstop7h 35m

Deal found 9/7

$581

Wed 9/164:05 pm -

1 stop12h 30m

Fri 10/211:10 am -

1 stop14h 10m

Deal found 9/4

$580

Thu 9/176:30 am -

1 stop14h 05m

Sun 9/207:34 pm -

2 stops15h 41m

Deal found 9/8

$573

Thu 9/179:55 am -

1 stop10h 40m

Sat 10/312:18 pm -

1 stop13h 52m

Deal found 9/8

$574

Fri 9/184:00 pm -

Nonstop8h 25m

Sat 10/310:05 pm -

Nonstop7h 35m

Deal found 9/8

$577

Mon 9/213:50 pm -

Nonstop8h 25m

Wed 11/116:55 pm -

Nonstop7h 25m

Deal found 9/5

$580

Sat 10/38:20 am -

1 stop13h 12m

Sat 10/105:05 pm -

1 stop10h 45m

Deal found 9/8

$582

Fri 10/98:40 am -

1 stop11h 55m

Sun 10/189:45 pm -

1 stop11h 00m

Deal found 9/7

$578

Tue 10/1311:45 am -

2 stops16h 10m

Wed 10/219:40 am -

1 stop16h 30m

Deal found 9/4

$583

Wed 10/1411:30 am -

1 stop13h 05m

Fri 10/306:59 pm -

1 stop32h 06m

Deal found 9/6

$582

Thu 10/159:25 pm -

1 stop26h 55m

Fri 10/308:40 pm -

1 stop10h 10m

Deal found 9/8

$576

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 September 8, 2026.

Fri 11/612:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$317

Fri 11/61:50 pm -

Nonstop8h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$367

Wed 12/231:50 pm -

Nonstop8h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$381

Mon 12/1412:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/3

$385

Wed 11/1112:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$393

Tue 11/312:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$394

Sun 11/88:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$395

Mon 11/28:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/3

$396

Mon 1/1112:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$397

Mon 12/288:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/4

$399

Sun 12/278:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$401

Wed 11/118:50 pm -

2 stops42h 34m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$402

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$572 (Iberia)
One-way from	$317
Popular in	May
Cheapest in	January
Average price	$620
Good round-trip deal	$475 or less
Good one-way deal	$492 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 ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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

Quickest round-trip

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Wed 12/9

1:50 pm-5:05 pm

Nonstop8h 15m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$479

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Fri 11/13

1:50 pm-5:05 pm

Nonstop8h 15m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$479

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Fri 12/4

8:40 am-6:06 pm

2 stops14h 26m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$482

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 11/7

6:30 am-4:51 pm

2 stops15h 21m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$483

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Mon 11/2

6:30 am-9:13 pm

2 stops19h 43m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$483

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 11/21

8:40 am-5:53 pm

2 stops14h 13m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$483

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Wed 12/2

11:45 am-11:35 pm

2 stops16h 50m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$484

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Wed 10/28

11:45 am-8:10 pm

1 stop12h 25m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$486

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Tue 12/1

12:55 pm-7:15 pm

1 stop11h 20m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$486

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Fri 3/5

6:45 pm-4:20 pm

1 stop26h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 60 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 September.

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

*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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $638). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $779). 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 Monday (29 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 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 $574 and $729 in February.
The cheapest round-trip price found within the last 5 days was $572 on Iberia (Feb 22-Mar 4).

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

Dublin (DUB) – chosen by Cheapflights users on 25% 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 Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 53m.

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 early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

Monday 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 81 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 United Airlines,Virgin Atlantic, 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.

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,180 reviews

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Virgin Atlantic

7.4

Good

694 reviews

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

American Airlines

7.1

Good

12,041 reviews

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Lufthansa

6.8

Okay

8,216 reviews

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

British Airways

6.7

Okay

8,211 reviews

United Airlines

7.4

Good

10,180 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

How long is the flight from London Heathrow Airport to Washington, D.C.?
British Airways, KLM, and Delta can get you from London Heathrow Airport to Washington, D.C. in just under 8h 25m. Your travel time will be generally consistent. The distance between London Heathrow Airport and Washington, D.C. is about 3664 mi. Most flights are nonstop.
What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?
Currently priced at $556, Lufthansa will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and British Airways - these airlines can fly you to your destination from $559 and $566, respectively. Lufthansa is 20% 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 $407 and $412 on Icelandair and Aer Lingus, 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 (80%), Austrian Airlines (80%), Copa Airlines (80%).
What are the cheapest flights from London Heathrow Airport to Washington, D.C.?
Looking at all options, your cheapest flight can be booked for $469. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $431 on average, our data indicates $1,902 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $638). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $779). 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 9 airlines flying from Heathrow to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$535	Average$624	FlexibilityNo cancel fee	On-time76%
Lufthansa	Cheapest$556	Average$739	FlexibilityNo cancel fee	On-time76%
American Airlines	Cheapest$559	Average$835	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$566	Average$743	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$567	Average$813	FlexibilityNo cancel fee	On-time69%
Austrian Airlines	Cheapest$567	Average$822	FlexibilityNo cancel fee	On-time78%
Delta	Cheapest$591	Average$872	FlexibilityNo cancel fee	On-timeN/A
Virgin Atlantic	Cheapest$627	Average$775	FlexibilityNo cancel fee	On-time72%
Aer Lingus	Cheapest$658	Average$786	FlexibilityNo cancel fee	On-timeN/A

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$317+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.

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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 September 8, 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 September 8, 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 September 8, 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 September 8, 2026.

Last-minute flights from Heathrow to Washington, D.C.Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated September 8, 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated September 8, 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 September 8, 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 September 8, 2026.

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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 September.

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 September 8, 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 Monday (29 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 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 $574 and $729 in February.The cheapest round-trip price found within the last 5 days was $572 on Iberia (Feb 22-Mar 4).

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.

Dublin (DUB) – chosen by Cheapflights users on 25% 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 Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 53m.

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 early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

Monday 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 81 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 September 8, 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 September 8, 2026.

Last-minute flights from Heathrow to Washington, D.C.
Discover last-minute flight deals from Heathrow to Washington, D.C.. Data last updated September 8, 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 September 8, 2026.

London Heathrow Airport to Washington, D.C. flights typically cost between $574 and $729 in February.
The cheapest round-trip price found within the last 5 days was $572 on Iberia (Feb 22-Mar 4).