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

For as low as $559, Icelandair can have you in Washington, D.C. from London in 11h 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 American Airlines is currently your cheapest option to Washington, D.C., with prices starting at $528. Additional round-trip tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at $544 and $556, respectively. These flights start at 24% 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 Aer Lingus from $412 and Icelandair from $420 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 Gatwick - Washington, D.C. Dulles Intl, 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 $470. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $394 on average, our data indicates $2,222 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 (74%), Austrian Airlines (74%), Copa Airlines( 74%).

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.

$500+ Cheap Flights from London to Washington, D.C.

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Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or January, booked 64 days in advance, depart on a Wednesday or Friday 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 October 30, 2026.

Mon 11/911:55 am -

1 stop11h 35m

Thu 11/127:40 pm -

1 stop10h 15m

Deal found 10/27

$540

Mon 11/911:55 am -

1 stop11h 35m

Sun 11/227:40 pm -

1 stop10h 15m

Deal found 10/29

$543

Tue 12/18:35 pm -

1 stop26h 55m

Mon 12/287:40 pm -

1 stop10h 10m

Deal found 10/29

$544

Wed 11/114:35 pm -

1 stop27h 40m

Wed 12/210:30 pm -

1 stop11h 35m

Deal found 10/30

$547

Wed 11/116:30 pm -

1 stop25h 45m

Wed 12/210:30 pm -

1 stop19h 10m

Deal found 10/30

$548

Mon 11/911:55 am -

1 stop11h 35m

Sun 11/157:40 pm -

1 stop10h 15m

Deal found 10/30

$548

Wed 11/188:15 am -

1 stop17h 15m

Wed 12/210:30 pm -

1 stop19h 10m

Deal found 10/30

$549

Wed 12/28:15 am -

1 stop17h 15m

Fri 12/410:30 pm -

1 stop14h 00m

Deal found 10/25

$550

Fri 11/611:55 am -

1 stop11h 35m

Sun 11/157:40 pm -

1 stop10h 15m

Deal found 10/27

$550

Fri 12/2512:15 pm -

1 stop11h 15m

Fri 1/297:40 pm -

1 stop10h 10m

Deal found 10/28

$551

Mon 11/234:35 pm -

1 stop27h 05m

Sun 12/610:30 pm -

1 stop12h 15m

Deal found 10/29

$551

Thu 12/312:15 pm -

1 stop11h 15m

Thu 12/107:40 pm -

1 stop18h 50m

Deal found 10/27

$552

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 October 30, 2026.

Wed 12/212:15 pm -

1 stop11h 15m

Sun 12/67:40 pm -

1 stop10h 10m

Deal found 10/29

$559

Sun 1/108:50 am -

1 stop11h 55m

Wed 2/105:15 pm -

1 stop9h 50m

Deal found 10/26

$596

Thu 2/44:00 pm -

1 stop33h 30m

Sun 2/710:30 pm -

1 stop12h 15m

Deal found 10/26

$609

Thu 2/46:30 am -

1 stop14h 15m

Sun 2/76:55 pm -

Nonstop7h 25m

Deal found 10/29

$627

Sun 2/712:40 pm -

1 stop14h 03m

Wed 2/173:55 pm -

1 stop10h 55m

Deal found 10/29

$640

Thu 11/269:00 am -

1 stop13h 00m

Thu 12/36:20 pm -

Nonstop7h 20m

Deal found 10/29

$658

Thu 11/266:00 am -

1 stop13h 10m

Wed 12/96:20 pm -

Nonstop7h 20m

Deal found 10/27

$665

Tue 3/29:20 am -

1 stop11h 25m

Thu 3/46:15 pm -

1 stop10h 15m

Deal found 10/29

$665

Wed 11/257:05 pm -

1 stop25h 25m

Tue 12/15:25 pm -

1 stop14h 25m

Deal found 10/27

$678

Sat 11/219:30 pm -

2 stops22h 00m

Sun 11/294:30 pm -

2 stops16h 45m

Deal found 10/26

$697

Mon 11/1610:55 am -

1 stop37h 30m

Tue 12/11:30 pm -

1 stop15h 25m

Deal found 10/25

$974

Thu 2/46:50 am -

1 stop13h 55m

Sun 2/75:15 pm -

1 stop10h 20m

Deal found 10/29

$621

Tue 3/26:20 am -

2 stops15h 10m

Thu 3/41:00 pm -

1 stop13h 50m

Deal found 10/29

$641

Sat 4/174:30 pm -

1 stop27h 40m

Sat 4/249:35 pm -

1 stop31h 15m

Deal found 10/28

$656

Wed 12/29:00 am -

1 stop13h 00m

Sun 12/66:20 pm -

Nonstop7h 20m

Deal found 10/26

$661

Mon 11/2311:20 am -

1 stop12h 19m

Sun 12/63:30 pm -

1 stop10h 20m

Deal found 10/25

$672

Mon 1/1110:40 am -

2 stops15h 30m

Sun 1/247:00 am -

2 stops18h 15m

Deal found 10/25

$717

Thu 2/2511:15 am -

1 stop17h 44m

Mon 3/11:23 pm -

1 stop13h 07m

Deal found 10/26

$658

Wed 2/108:05 pm -

1 stop24h 40m

Sun 2/145:35 pm -

1 stop18h 45m

Deal found 10/29

$663

Sun 3/289:15 pm -

2 stops46h 55m

Fri 4/94:40 pm -

1 stop12h 10m

Deal found 10/26

$665

Thu 2/49:40 am -

1 stop11h 48m

Mon 3/16:55 pm -

1 stop10h 00m

Deal found 10/29

$682

Thu 12/38:00 am -

1 stop11h 22m

Sun 12/132:25 pm -

1 stop12h 30m

Deal found 10/29

$704

Thu 11/192:50 pm -

1 stop28h 20m

Tue 11/246:20 pm -

Nonstop7h 20m

Deal found 10/26

$797

Fri 11/203:25 pm -

2 stops28h 50m

Sat 11/285:25 pm -

2 stops23h 15m

Deal found 10/25

$735

Wed 12/24:35 pm -

1 stop27h 40m

Sun 12/610:30 pm -

2 stops17h 05m

Deal found 10/29

$685

Sat 12/269:50 am -

1 stop17h 04m

Wed 12/307:00 am -

1 stop18h 25m

Deal found 10/27

$685

Mon 11/237:45 am -

2 stops14h 43m

Sun 12/65:35 pm -

1 stop18h 45m

Deal found 10/25

$692

Tue 12/151:00 pm -

1 stop13h 59m

Thu 1/77:00 am -

1 stop9h 20m

Deal found 10/25

$705

Thu 3/48:55 am -

1 stop13h 02m

Mon 4/261:45 pm -

1 stop12h 40m

Deal found 10/30

$700

Mon 12/287:50 am -

1 stop14h 23m

Tue 1/54:05 pm -

1 stop24h 15m

Deal found 10/25

$708

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

Wed 11/44:35 pm -

1 stop27h 40m

Wed 12/910:30 pm -

1 stop11h 35m

Deal found 10/28

$555

Thu 11/56:00 am -

1 stop14h 15m

Tue 11/175:25 pm -

1 stop19h 05m

Deal found 10/29

$554

Fri 11/611:55 am -

1 stop11h 35m

Sun 11/157:40 pm -

1 stop10h 15m

Deal found 10/27

$550

Mon 11/911:55 am -

1 stop11h 35m

Thu 11/127:40 pm -

1 stop10h 15m

Deal found 10/27

$540

Mon 11/911:55 am -

1 stop11h 35m

Sun 11/227:40 pm -

1 stop10h 15m

Deal found 10/29

$543

Mon 11/911:55 am -

1 stop11h 35m

Sun 11/157:40 pm -

1 stop10h 15m

Deal found 10/30

$548

Wed 11/114:35 pm -

1 stop27h 40m

Wed 12/210:30 pm -

1 stop11h 35m

Deal found 10/30

$547

Wed 11/116:30 pm -

1 stop25h 45m

Wed 12/210:30 pm -

1 stop19h 10m

Deal found 10/30

$548

Wed 11/188:15 am -

1 stop17h 15m

Wed 12/210:30 pm -

1 stop19h 10m

Deal found 10/30

$549

Wed 11/1810:40 am -

1 stop14h 50m

Wed 12/210:30 pm -

1 stop11h 35m

Deal found 10/29

$553

Mon 11/234:35 pm -

1 stop27h 05m

Sun 12/610:30 pm -

1 stop12h 15m

Deal found 10/29

$551

Mon 11/236:30 pm -

1 stop25h 10m

Sun 12/610:30 pm -

1 stop19h 10m

Deal found 10/29

$552

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 October 30, 2026.

Sun 12/276:00 am -

2 stops37h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$500

Tue 11/246:00 am -

1 stop13h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$500

Sat 4/249:25 pm -

1 stop26h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$501

Thu 11/1211:00 am -

1 stop28h 21m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$501

Sun 12/278:35 pm -

1 stop26h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$502

Wed 12/24:35 pm -

1 stop27h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$502

Wed 11/46:50 am -

2 stops37h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$503

Fri 11/206:30 pm -

1 stop25h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$503

Fri 11/136:20 am -

2 stops17h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$504

Sat 11/78:00 pm -

3 stops48h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$505

Mon 1/116:00 am -

1 stop14h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/26

$505

Wed 12/96:00 am -

3 stops37h 49m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/25

$506

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$539 (FlightHub)
One-way from	$500 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$669
Good round-trip deal	$693 or less
Good one-way deal	$565 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. 9% potential increase in price ($72 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 October 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

LondonWashington, D.C.

LTN London Luton - IAD Washington, D.C. Dulles Intl

LTNIAD

London Luton

Sun 1/31

7:45 am-4:20 pm

1 stop37h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$517

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 12/2

6:00 am-8:30 pm

1 stop19h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$525

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Thu 1/28

4:00 pm-8:30 pm

1 stop33h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$529

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Thu 12/10

4:00 pm-8:30 pm

1 stop33h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$530

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Sat 12/5

4:35 pm-8:35 pm

1 stop33h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$530

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Thu 12/24

10:35 am-9:11 pm

1 stop15h 36m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$534

LondonWashington, D.C.

LTN London Luton - IAD Washington, D.C. Dulles Intl

LTNIAD

London Luton

Tue 1/12

7:45 am-3:45 pm

1 stop13h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$535

LondonWashington, D.C.

LTN London Luton - IAD Washington, D.C. Dulles Intl

LTNIAD

London Luton

Mon 4/26

9:55 pm-7:15 pm

3 stops26h 20m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$535

LondonWashington, D.C.

LTN London Luton - IAD Washington, D.C. Dulles Intl

LTNIAD

London Luton

Sun 1/17

1:10 pm-3:45 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$536

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 12/2

12:15 pm-6:30 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 12/6

7:40 pm-10:50 am

1 stop10h 10m

$559

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars
Gotogate	Price Accuracy2 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*2 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-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

LGW-IAD

LHR-IAD

LTN-IAD

LHR-DCA

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

LGW-IAD

LHR-IAD

LTN-IAD

LHR-DCA

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 $639). Flying from London to Washington, D.C. in June is currently the most expensive (average of $775). 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.

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 $580 and $766 in February.
The cheapest round-trip price found within the last 5 days was $539 on Icelandair (Feb 27-Mar 6).

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

Reykjavik (KEF) – chosen by Cheapflights users on 50% 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.?

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 to Washington, D.C.?

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 35m.

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 38m.

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 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 63 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, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.5

Good

699 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

699 reviews

Virgin Atlantic

7.5

Good

699 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

7.3

Good

10,459 reviews

Virgin Atlantic

7.5

Good

699 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.

Icelandair

6.9

Okay

764 reviews

Virgin Atlantic

7.5

Good

699 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

8,301 reviews

Virgin Atlantic

7.5

Good

699 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

8,277 reviews

Virgin Atlantic

7.5

Good

699 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 $559, Icelandair can have you in Washington, D.C. from London in 11h 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 American Airlines is currently your cheapest option to Washington, D.C., with prices starting at $528. Additional round-trip tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at $544 and $556, respectively. These flights start at 24% 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 Aer Lingus from $412 and Icelandair from $420 one-way.
What are the most popular routes from London to Washington, D.C.?
While some choose either London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl, 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 (74%), Austrian Airlines (74%), Copa Airlines( 74%).
What are the cheapest flights from London to Washington, D.C.?
Looking at all options, your cheapest flight can be booked for $470. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $394 on average, our data indicates $2,222 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 $639). Flying from London to Washington, D.C. in June is currently the most expensive (average of $775). 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
American Airlines	Cheapest$528	Average$831	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$544	Average$803	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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$500+ Cheap flights from London (LON) 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 12/27. 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 October 30, 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 October 30, 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 October 30, 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 October 30, 2026.

Last-minute flights from London to Washington, D.C.Discover last-minute flight deals from London to Washington, D.C.. Data last updated October 30, 2026 and is based on user searches.

Discover last-minute flight deals from London to Washington, D.C.. Data last updated October 30, 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 October 30, 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 October 30, 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 October.

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 October 30, 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.

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 $580 and $766 in February.The cheapest round-trip price found within the last 5 days was $539 on Icelandair (Feb 27-Mar 6).

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.

Reykjavik (KEF) – chosen by Cheapflights users on 50% 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.

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 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 Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 35m.

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 38m.

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 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 63 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, andIcelandair. 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.?

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

Traveling to a place near 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 October 30, 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 October 30, 2026.

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated October 30, 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 October 30, 2026.

London to Washington, D.C. flights typically cost between $580 and $766 in February.
The cheapest round-trip price found within the last 5 days was $539 on Icelandair (Feb 27-Mar 6).