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Washington, D.C.

$521+ Cheap flights from London (LON) to Washington, D.C. (WAS)

LON — WAS
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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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 flights from London to Washington, D.C.

Fri 12/2512:15 pm -
1 stop11h 15m
Sat 1/307:40 pm -
1 stop10h 10m
Deal found 11/7$543
Wed 12/164:20 pm -
Nonstop8h 55m
Fri 4/236:00 am -
1 stop10h 25m
Deal found 11/7$544
Tue 12/18:35 pm -
1 stop26h 55m
Thu 12/107:40 pm -
1 stop18h 50m
Deal found 11/9$545
Sun 12/138:35 pm -
1 stop26h 55m
Thu 1/77:40 pm -
1 stop18h 50m
Deal found 11/6$548
Thu 12/312:00 pm -
1 stop14h 57m
Tue 12/81:25 pm -
1 stop14h 45m
Deal found 11/5$549
Sun 12/138:35 pm -
1 stop26h 55m
Fri 1/87:40 pm -
1 stop18h 50m
Deal found 11/5$550
Wed 11/116:30 pm -
1 stop25h 45m
Mon 1/115:25 pm -
1 stop23h 10m
Deal found 11/8$551
Thu 11/126:00 am -
1 stop14h 15m
Mon 11/165:25 pm -
1 stop23h 10m
Deal found 11/5$552
Thu 12/1012:15 pm -
1 stop11h 15m
Wed 1/67:40 pm -
1 stop10h 10m
Deal found 11/6$553
Wed 11/186:30 pm -
1 stop25h 45m
Tue 12/15:25 pm -
1 stop24h 15m
Deal found 11/9$555
Wed 11/184:35 pm -
1 stop27h 40m
Sun 11/2910:30 pm -
1 stop12h 15m
Deal found 11/6$558
Thu 12/312:15 pm -
1 stop11h 15m
Sun 12/137:40 pm -
1 stop10h 10m
Deal found 11/8$559

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$543
(Icelandair)

One-way from

$521
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$674

Good round-trip deal

$766 or less

Good one-way deal

$574 or less
Provider with most accurate pricing for London (LON)-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Washington, D.C. (WAS) flights.
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From London (LON) to Washington, D.C. (WAS)
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One-way flight from London (LON) to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 9% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from London (LON) to Washington, D.C. (WAS).
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Price to beat on a one-way flight from London (LON) to Washington, D.C. (WAS).
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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.

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

LGWIAD

London Gatwick

Mon 12/7

4:35 pm-2:40 pm

1 stop27h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$523

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sun 3/14

9:55 am-4:15 pm

2 stops34h 20m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$525

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Sun 3/14

2:10 pm-4:45 pm

1 stop30h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$535

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Thu 1/21

10:10 am-8:30 pm

2 stops39h 20m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$544

LondonWashington, D.C.

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

LTNIAD

London Luton

Sat 11/21

3:05 pm-8:35 pm

3 stops34h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$544

LondonWashington, D.C.

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

LTNIAD

London Luton

Sun 2/14

6:00 am-6:30 pm

1 stop17h 30m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$547

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Sun 3/21

10:05 pm-7:30 pm

3 stops25h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$550

LondonWashington, D.C.

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

LTNIAD

London Luton

Tue 12/22

4:25 pm-7:05 pm

2 stops31h 40m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$560

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Sat 3/27

4:35 pm-3:10 pm

1 stop26h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$574

LondonWashington, D.C.

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

LGWIAD

London Gatwick

Wed 12/9

4:35 pm-3:15 pm

1 stop27h 40m

Washington, D.C. Dulles Intl

Tue 1/12

5:25 pm-9:50 am

1 stop11h 25m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust 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.
Estimated round-trip price

Cheapflights Insights

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

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 $634). 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 Sunday (27 on average). You will have fewer flight options on Tuesday, 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 $576 and $768 in December.
The cheapest round-trip price found within the last 5 days was $543 on Icelandair (Dec 25-Jan 28).

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 47 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

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.

Read more
Harriet Baskas

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.

Read more
Ramsey Qubein

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 more

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.
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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
698 reviews
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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
10,471 reviews
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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
767 reviews
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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
8,290 reviews
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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
8,286 reviews
Virgin Atlantic
7.5
Good
698 reviews

Food

6.9

Boarding

7.7

Crew

8.1

Comfort

7.3

Entertainment

7.5

Overall

7.5

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 $657, TAP AIR PORTUGAL can have you in Washington, D.C. from London in 12h 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 (75%), Austrian Airlines (75%), Copa Airlines( 75%).

  • 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 $352 on average, our data indicates $2,203 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 $634). 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.

See more FAQs

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Arlington
Lanham
Reston
Herndon
Hyattsville
Springfield
Fairfax
Fredericksburg
Falls Church
Rockville
Towson
Silver Spring
Oxon Hill
Laurel
Hunt Valley
Clinton
Owings Mills
Waldorf

Browse thousands of different options on Cheapflights for your next trip

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

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$528Average$850FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$544Average$744FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$556Average$740FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$566Average$748FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$567Average$750FlexibilityNo cancel feeOn-time78%
Virgin AtlanticCheapest$581Average$711FlexibilityNo cancel feeOn-time72%
DeltaCheapest$581Average$872FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$582Average$748FlexibilityNo cancel feeOn-time77%
KLMCheapest$583Average$836FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$658Average$804FlexibilityNo cancel feeOn-timeN/A

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