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

For as low as $589, Air Canada can have you in Washington, D.C. from London in 8h 15m. The distance from London to Washington, D.C. is about 3664 mi. This flight may include one or multiple stops.

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

Flying on Austrian Airlines is currently your cheapest option to Washington, D.C., with prices starting at $534. Additional round-trip tickets that might be worth considering are offered by Lufthansa and American Airlines, with the lowest prices starting at $536 and $559, respectively. These flights start at 23% lower than the current average price 3 months from now.

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

One-way options have recently been found by users for as low as $334 on Virgin Atlantic. Other airlines that offer cheap prices include Icelandair from $407 and Aer Lingus from $445 one-way.

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 to Washington, D.C.?

While some choose either London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to Washington, D.C..

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

Looking at all options, your cheapest flight can be booked for $453. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $444 on average, our data indicates $2,084 when flying from London to Washington, D.C..

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

Before booking your flight to Washington, D.C. from London, check out the most reliable airlines to get you to your destination on time: Air Canada (83%), Austrian Airlines (83%), Copa Airlines( 83%).

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

When booking a flight from London 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-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-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London-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-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 London to Washington, D.C. that include hotel bookings?

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

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

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

Yes. Cheapflights offers flight deals from London 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.

$425+ Cheap Flights from London to Washington, D.C.

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or January, booked 57 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

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

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.

Wed 9/91:05 pm -

1 stop11h 15m

Sat 9/198:30 pm -

1 stop10h 25m

Deal found 8/2

$580

Sun 10/189:30 am -

1 stop11h 35m

Mon 11/24:30 pm -

1 stop11h 00m

Deal found 8/3

$581

Tue 9/11:00 pm -

1 stop14h 15m

Mon 9/148:30 pm -

1 stop13h 10m

Deal found 8/5

$581

Wed 9/168:40 am -

2 stops16h 19m

Wed 9/2312:55 pm -

2 stops16h 05m

Deal found 8/3

$581

Wed 9/169:15 am -

1 stop12h 30m

Sun 9/208:20 pm -

1 stop16h 05m

Deal found 8/4

$581

Tue 9/11:05 pm -

1 stop11h 15m

Mon 9/148:30 pm -

1 stop18h 50m

Deal found 8/5

$582

Mon 10/193:40 pm -

1 stop32h 40m

Fri 10/308:40 pm -

1 stop10h 15m

Deal found 8/3

$582

Sun 9/69:15 am -

1 stop11h 43m

Sun 9/274:59 pm -

1 stop10h 01m

Deal found 8/3

$582

Thu 10/89:15 am -

1 stop12h 30m

Thu 10/158:20 pm -

1 stop11h 15m

Deal found 8/3

$582

Thu 11/59:00 am -

2 stops16h 10m

Wed 11/189:55 am -

2 stops16h 15m

Deal found 8/3

$583

Fri 10/29:30 am -

1 stop11h 10m

Fri 10/912:40 pm -

2 stops12h 50m

Deal found 8/3

$583

Thu 9/34:40 pm -

Nonstop8h 20m

Thu 9/106:35 pm -

Nonstop7h 20m

Deal found 8/3

$584

Best flights from London to Washington, D.C.
Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.

Thu 9/2412:15 pm -

Nonstop8h 15m

Thu 10/156:35 pm -

Nonstop7h 20m

Deal found 8/5

$589

Wed 9/210:45 am -

1 stop18h 14m

Sun 9/68:20 pm -

1 stop29h 30m

Deal found 8/4

$599

Wed 12/211:55 am -

1 stop11h 35m

Sat 12/57:40 pm -

1 stop10h 15m

Deal found 8/1

$601

Sun 8/309:30 am -

1 stop11h 35m

Sat 9/510:15 pm -

Nonstop7h 25m

Deal found 8/2

$602

Sun 12/1310:40 am -

1 stop14h 55m

Thu 1/75:25 pm -

2 stops22h 10m

Deal found 8/4

$639

Mon 9/2112:15 pm -

Nonstop8h 15m

Fri 9/256:35 pm -

Nonstop7h 20m

Deal found 8/4

$642

Sat 9/58:25 am -

2 stops19h 56m

Sat 9/125:40 pm -

1 stop21h 35m

Deal found 8/5

$658

Mon 8/3110:00 am -

1 stop10h 35m

Sun 9/65:30 pm -

1 stop9h 25m

Deal found 8/3

$668

Tue 10/1312:50 pm -

1 stop12h 53m

Fri 10/308:50 pm -

1 stop10h 50m

Deal found 8/2

$677

Thu 9/39:05 pm -

2 stops24h 55m

Wed 9/98:20 pm -

1 stop14h 40m

Deal found 8/4

$761

Wed 8/267:15 pm -

1 stop25h 15m

Mon 8/315:40 pm -

1 stop13h 55m

Deal found 8/2

$799

Wed 9/166:55 am -

1 stop33h 35m

Wed 9/239:40 pm -

1 stop31h 15m

Deal found 8/4

$922

Wed 8/2612:20 pm -

1 stop11h 45m

Tue 9/16:00 pm -

1 stop10h 35m

Deal found 8/2

$927

Sat 10/249:30 am -

1 stop11h 10m

Sat 10/3112:55 pm -

1 stop13h 35m

Deal found 8/6

$591

Wed 1/68:50 am -

1 stop11h 45m

Wed 1/209:55 pm -

Nonstop7h 15m

Deal found 8/1

$605

Wed 1/1310:00 am -

2 stops19h 20m

Thu 1/2112:30 pm -

2 stops22h 15m

Deal found 8/3

$659

Sat 10/39:30 am -

1 stop11h 10m

Sun 10/182:59 pm -

1 stop9h 56m

Deal found 8/4

$600

Mon 9/212:00 pm -

1 stop23h 31m

Fri 9/259:27 am -

1 stop19h 33m

Deal found 8/2

$660

Thu 11/512:55 pm -

1 stop11h 24m

Sun 11/86:00 am -

1 stop9h 00m

Deal found 8/3

$607

Mon 8/241:30 pm -

1 stop11h 30m

Sun 8/306:30 pm -

Nonstop7h 25m

Deal found 8/2

$669

Thu 10/13:40 pm -

1 stop11h 35m

Mon 10/58:30 pm -

1 stop13h 10m

Deal found 8/2

$674

Wed 12/234:35 pm -

1 stop27h 40m

Sun 1/310:30 pm -

2 stops17h 05m

Deal found 8/6

$693

Thu 8/2011:45 am -

1 stop14h 14m

Thu 9/310:15 am -

1 stop18h 00m

Deal found 8/6

$713

Sat 11/214:20 pm -

Nonstop8h 55m

Sat 11/281:19 pm -

1 stop12h 51m

Deal found 8/4

$602

Mon 8/3110:00 am -

2 stops18h 26m

Sun 9/65:40 pm -

1 stop10h 10m

Deal found 8/3

$674

Fri 9/184:35 pm -

1 stop11h 35m

Fri 9/256:00 am -

1 stop10h 40m

Deal found 8/4

$616

Mon 9/142:00 pm -

1 stop23h 31m

Mon 9/289:27 am -

1 stop19h 33m

Deal found 8/3

$684

Sat 12/1911:45 am -

Nonstop8h 40m

Sun 1/36:55 pm -

Nonstop7h 25m

Deal found 8/5

$753

Thu 8/203:40 pm -

1 stop11h 35m

Mon 10/58:30 pm -

1 stop13h 10m

Deal found 8/6

$710

Fri 10/210:35 am -

1 stop15h 00m

Tue 10/1310:35 pm -

2 stops16h 50m

Deal found 8/4

$714

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated August 6, 2026 and is based on user searches.

Mon 8/243:40 pm -

1 stop32h 40m

Sun 9/68:30 pm -

1 stop13h 10m

Deal found 8/2

$584

Tue 9/11:00 pm -

1 stop11h 20m

Mon 9/148:30 pm -

1 stop13h 10m

Deal found 8/4

$581

Tue 9/11:05 pm -

1 stop11h 15m

Mon 9/148:30 pm -

1 stop18h 50m

Deal found 8/5

$582

Thu 9/34:40 pm -

Nonstop8h 20m

Thu 9/106:35 pm -

Nonstop7h 20m

Deal found 8/3

$584

Sun 9/69:15 am -

1 stop11h 43m

Sun 9/274:59 pm -

1 stop10h 01m

Deal found 8/3

$582

Wed 9/91:05 pm -

1 stop11h 15m

Sat 9/198:30 pm -

1 stop10h 25m

Deal found 8/2

$580

Wed 9/93:40 pm -

1 stop32h 40m

Fri 9/1811:20 pm -

1 stop10h 20m

Deal found 8/2

$585

Mon 9/1412:15 pm -

Nonstop8h 15m

Tue 9/296:35 pm -

Nonstop7h 20m

Deal found 8/5

$585

Wed 9/168:40 am -

2 stops16h 19m

Wed 9/2312:55 pm -

2 stops16h 05m

Deal found 8/3

$581

Wed 9/169:15 am -

1 stop12h 30m

Sun 9/208:20 pm -

1 stop16h 05m

Deal found 8/4

$581

Thu 9/176:00 am -

2 stops17h 15m

Thu 9/2412:55 pm -

2 stops16h 05m

Deal found 8/3

$584

Sun 9/277:30 am -

1 stop13h 35m

Tue 9/2910:05 pm -

Nonstop7h 35m

Deal found 8/5

$581

One-way flights from London to Washington, D.C.
Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.

Mon 10/126:25 am -

3 stops32h 49m

Deal found 8/5

$425

Wed 1/611:55 am -

1 stop11h 45m

Deal found 8/4

$426

Sun 9/279:25 pm -

1 stop27h 00m

Deal found 8/4

$427

Sat 8/292:00 pm -

1 stop25h 24m

Deal found 8/6

$427

Fri 9/112:00 pm -

2 stops31h 46m

Deal found 8/4

$428

Wed 10/216:05 am -

3 stops33h 09m

Deal found 8/6

$429

Thu 10/223:40 pm -

1 stop11h 35m

Deal found 8/6

$429

Mon 8/312:00 pm -

1 stop26h 24m

Deal found 8/5

$430

Fri 10/99:25 pm -

1 stop29h 50m

Deal found 8/5

$431

Tue 9/12:00 pm -

1 stop26h 24m

Deal found 8/5

$431

Fri 10/239:25 pm -

1 stop27h 00m

Deal found 8/6

$432

Thu 10/81:05 pm -

1 stop14h 10m

Deal found 8/3

$434

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$580 (Icelandair)
One-way from	$425 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$746
Good round-trip deal	$702 or less
Good one-way deal	$492 or less

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

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($69 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

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

Search Deals

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

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Thu 9/24

12:15 pm-3:30 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

Thu 10/15

6:35 pm-6:55 am

Nonstop7h 20m

$589

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sat 10/24

9:30 am-3:40 pm

1 stop11h 10m

Washington, D.C. Reagan-National

Sat 10/31

12:55 pm-6:30 am

1 stop13h 35m

$591

LondonWashington, D.C.

LGW London Gatwick - DCA Washington, D.C. Reagan-National

LGWDCA

London Gatwick

Wed 9/2

10:45 am-11:59 pm

1 stop18h 14m

Washington, D.C. Reagan-National

Sun 9/6

8:20 pm-6:50 am

1 stop29h 30m

$599

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Sat 10/3

9:30 am-3:40 pm

1 stop11h 10m

Washington, D.C. Reagan-National

Sun 10/18

2:59 pm-5:55 am

1 stop9h 56m

$600

LondonWashington, D.C.

LGW London Gatwick - IAD Washington, D.C. Dulles Intl

LGWIAD

London Gatwick

Wed 12/2

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 12/5

7:40 pm-10:55 am

1 stop10h 15m

$601

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sun 8/30

9:30 am-4:05 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 9/5

10:15 pm-10:40 am

Nonstop7h 25m

$602

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sat 11/21

4:20 pm-8:15 pm

Nonstop8h 55m

Washington, D.C. Dulles Intl

Sat 11/28

1:19 pm-7:10 am

1 stop12h 51m

$602

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 1/6

8:50 am-3:35 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 1/20

9:55 pm-10:10 am

Nonstop7h 15m

$605

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Thu 11/5

12:55 pm-7:19 pm

1 stop11h 24m

Washington, D.C. Reagan-National

Sun 11/8

6:00 am-8:00 pm

1 stop9h 00m

$607

LondonWashington, D.C.

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

LHRDCA

London Heathrow

Fri 9/18

4:35 pm-11:10 pm

1 stop11h 35m

Washington, D.C. Reagan-National

Fri 9/25

6:00 am-9:40 pm

1 stop10h 40m

$616

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 60 resultsSorted by cheapest first

...

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

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

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Thrive Travel	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*2 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-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-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Washington, D.C. flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London-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-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 London to Washington, D.C.

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

LON-WAS

LHR-IAD

LGW-IAD

LHR-DCA

LCY-IAD

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 to Washington, D.C.

LON-WAS

LHR-IAD

LGW-IAD

LHR-DCA

LCY-IAD

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

Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $631). Flying from London to Washington, D.C. in June is currently the most expensive (average of $776). 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 LON to WAS?

When flying from London to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The most flights from LON to WAS are scheduled on a Wednesday (30 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (19 on average).

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

Airfare is below average for this route at the moment.

London to Washington, D.C. flights typically cost between $671 and $910 in September.
The cheapest round-trip price found within the last 5 days was $580 on Icelandair (Sep 9-Sep 19).

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

Dublin (DUB) – chosen by Cheapflights users on 44% of 1-stop itineraries from London to Washington, D.C. on Cheapflights.

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

Dublin (DUB) is the most affordable 1-stop option, with an average round-trip price of $519.

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

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 11h 05m.

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 25m.

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

About 17% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

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

Historically, flights departing in the evening 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?

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 11% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Washington, D.C., you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Cheapflights partnered with top experts to bring you the best recommendations for your London 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 through reviews of airlines operating flights from London to Washington, D.C., such as Virgin Atlantic,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Virgin Atlantic

7.5

Good

694 reviews

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

United Airlines

7.4

Good

10,073 reviews

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

American Airlines

7.1

Good

11,867 reviews

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Lufthansa

6.8

Okay

8,177 reviews

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

British Airways

6.7

Okay

8,147 reviews

Virgin Atlantic

7.5

Good

694 reviews

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

How long is the flight from London to Washington, D.C.?
For as low as $589, Air Canada can have you in Washington, D.C. from London in 8h 15m. The distance from London to Washington, D.C. is about 3664 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Washington, D.C. round-trip?
Flying on Austrian Airlines is currently your cheapest option to Washington, D.C., with prices starting at $534. Additional round-trip tickets that might be worth considering are offered by Lufthansa and American Airlines, with the lowest prices starting at $536 and $559, respectively. These flights start at 23% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from London to Washington, D.C. one-way?
One-way options have recently been found by users for as low as $334 on Virgin Atlantic. Other airlines that offer cheap prices include Icelandair from $407 and Aer Lingus from $445 one-way.
What are the most popular routes from London to Washington, D.C.?
While some choose either London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to Washington, D.C..
What are the most reliable airlines from London to Washington, D.C.?
Before booking your flight to Washington, D.C. from London, check out the most reliable airlines to get you to your destination on time: Air Canada (83%), Austrian Airlines (83%), Copa Airlines( 83%).
What are the cheapest flights from London to Washington, D.C.?
Looking at all options, your cheapest flight can be booked for $453. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $444 on average, our data indicates $2,084 when flying from London to Washington, D.C..
Can I find deals for flights from London to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on London to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London 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 London to Washington, D.C..
Can I find deals for business class flights from London to Washington, D.C.?
Yes. Cheapflights offers flight deals from London 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 to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $631). Flying from London to Washington, D.C. in June is currently the most expensive (average of $776). 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 London to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Austrian Airlines	Cheapest$534	Average$743	FlexibilityNo cancel fee	On-time78%
Lufthansa	Cheapest$536	Average$742	FlexibilityNo cancel fee	On-time76%
Icelandair	Cheapest$544	Average$636	FlexibilityNo cancel fee	On-time76%
American Airlines	Cheapest$559	Average$796	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$566	Average$749	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$567	Average$784	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$635	Average$663	FlexibilityNo cancel fee	On-time67%
Aer Lingus	Cheapest$658	Average$823	FlexibilityNo cancel fee	On-timeN/A
Delta	Cheapest$659	Average$872	FlexibilityNo cancel fee	On-timeN/A
Virgin Atlantic	Cheapest$669	Average$776	FlexibilityNo cancel fee	On-time72%

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$425+ Cheap flights from London (LON) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. 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 London to Washington, D.C.

Cheapest flights from London to Washington, D.C.Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.

Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.

Best flights from London to Washington, D.C.Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.

Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.

Last-minute flights from London to Washington, D.C.Discover last-minute flight deals from London to Washington, D.C.. Data last updated August 6, 2026 and is based on user searches.

Discover last-minute flight deals from London to Washington, D.C.. Data last updated August 6, 2026 and is based on user searches.

One-way flights from London to Washington, D.C.Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.

Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.

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

Compare providers for flights from London 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 London to Washington, D.C. in August.

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

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

Cheapflights Insights

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

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

Find hourly flight availability from London 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 August 6, 2026.

When flying from London to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The most flights from LON to WAS are scheduled on a Wednesday (30 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (19 on average).

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

Airfare is below average for this route at the moment.

London to Washington, D.C. flights typically cost between $671 and $910 in September.The cheapest round-trip price found within the last 5 days was $580 on Icelandair (Sep 9-Sep 19).

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

Share of 1-stop round-trip flights from London 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 44% of 1-stop itineraries from London to Washington, D.C. on Cheapflights.

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

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

Dublin (DUB) is the most affordable 1-stop option, with an average round-trip price of $519.

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

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

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 11h 05m.

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

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 25m.

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

About 17% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

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

Historically, flights departing in the evening 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?

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 11% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London to Washington, D.C., you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

The best insider tips for London 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 to Washington, D.C. trip

Our travel experts

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from London to Washington, D.C., such as Virgin Atlantic,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

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

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

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

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

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

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.

Best flights from London to Washington, D.C.
Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated August 6, 2026 and is based on user searches.

One-way flights from London to Washington, D.C.
Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.

London to Washington, D.C. flights typically cost between $671 and $910 in September.
The cheapest round-trip price found within the last 5 days was $580 on Icelandair (Sep 9-Sep 19).