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Cheap flights from London to Washington, D.C. from £237

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — WAS
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags
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 Thursday or Wednesday and return on a Tuesday

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

Enter your travel dates to find the best prices.

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 10 June 2026.

Sun 5/706:50
LHR
-
IAD
1 stop11h 40m
Multiple Airlines
Sun 12/715:25
IAD
-
LHR
1 stop11h 15m
Multiple Airlines
Deal found 9/6£487
Wed 12/809:15
LCY
-
IAD
1 stop12h 30m
SWISS
Wed 19/820:20
IAD
-
LCY
1 stop11h 15m
SWISS
Deal found 8/6£487
Mon 15/615:00
LHR
-
IAD
1 stop14h 13m
American Airlines
Mon 22/620:22
IAD
-
LHR
1 stop10h 48m
American Airlines
Deal found 8/6£487
Mon 6/708:10
LCY
-
IAD
1 stop12h 20m
Multiple Airlines
Mon 13/722:20
IAD
-
LCY
2 stops14h 35m
Multiple Airlines
Deal found 8/6£487
Wed 17/612:00
LHR
-
IAD
1 stop12h 33m
British Airways
Sat 27/620:22
IAD
-
LHR
1 stop10h 48m
British Airways
Deal found 9/6£488
Wed 1/710:05
LHR
-
DCA
1 stop12h 08m
American Airlines
Sun 12/706:30
DCA
-
LHR
1 stop10h 10m
American Airlines
Deal found 9/6£488
Thu 23/719:15
LCY
-
IAD
1 stop26h 30m
Multiple Airlines
Thu 30/722:15
IAD
-
LCY
1 stop14h 40m
Multiple Airlines
Deal found 8/6£488
Tue 11/808:45
LHR
-
IAD
1 stop13h 00m
United Airlines
Thu 20/812:35
IAD
-
LHR
1 stop13h 40m
United Airlines
Deal found 8/6£489
Fri 3/720:40
LGW
-
IAD
1 stop27h 15m
British Airways
Sat 11/720:30
IAD
-
LGW
1 stop33h 20m
British Airways
Deal found 9/6£489
Fri 19/609:15
LHR
-
DCA
1 stop19h 39m
American Airlines
Mon 22/619:07
DCA
-
LHR
1 stop12h 03m
American Airlines
Deal found 9/6£489
Fri 28/809:15
LCY
-
IAD
1 stop12h 30m
SWISS
Sun 6/920:20
IAD
-
LCY
1 stop11h 15m
SWISS
Deal found 9/6£489
Wed 22/708:40
LHR
-
IAD
1 stop13h 05m
United Airlines
Sat 8/810:30
IAD
-
LHR
1 stop15h 15m
United Airlines
Deal found 9/6£490

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

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 June 2026.

Round-trip from

£487

One-way from

£237

Popular in

June

Cheapest in

February

Average price

£594

Good round-trip deal

£562 or less

Good one-way deal

£518 or less
Lufthansa
  • Lufthansa
  • 5/7-12/7
  • 2 total stops
  • 22h 55m total
  • London to Washington, D.C.
Search Deals
1/9
  • 1/9
  • 1 total stop
  • 24h 06m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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

 
Customise your flight search to find flights from London to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 June 2026.
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 return flight

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 20/8

09:15-15:58

1 stop11h 43m

Washington, D.C. Reagan-National

Mon 21/9

18:23-09:10

1 stop9h 47m

£496

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 18/7

09:30-15:38

1 stop11h 08m

Washington, D.C. Reagan-National

Thu 6/8

06:00-21:20

1 stop10h 20m

£501

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 9/7

17:25-23:31

1 stop11h 06m

Washington, D.C. Reagan-National

Sat 11/7

19:58-21:40

1 stop20h 42m

£514

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 7/8

16:40-20:00

Nonstop8h 20m

Washington, D.C. Dulles Intl

Wed 12/8

22:15-10:40

Nonstop7h 25m

£517

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 26/7

09:30-15:38

1 stop11h 08m

Washington, D.C. Reagan-National

Sun 30/8

16:30-07:15

1 stop9h 45m

£520

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 24/7

09:30-15:38

1 stop11h 08m

Washington, D.C. Reagan-National

Fri 28/8

14:59-05:55

1 stop9h 56m

£520

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Wed 1/7

19:15-15:30

1 stop25h 15m

Washington, D.C. Dulles Intl

Tue 14/7

17:40-12:35

1 stop13h 55m

£521

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Thu 3/9

19:15-15:30

1 stop25h 15m

Washington, D.C. Dulles Intl

Tue 15/9

17:45-12:35

1 stop13h 50m

£522
Fastest return journey

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 6/10

17:55-21:05

Nonstop8h 10m

Washington, D.C. Dulles Intl

Sat 17/10

22:55-11:20

Nonstop7h 25m

£526

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 10/10

16:20-23:04

1 stop11h 44m

Washington, D.C. Reagan-National

Mon 12/10

17:00-08:50

1 stop10h 50m

£526

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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 return 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.

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

Currently, September is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £446). Flying from London to Washington, D.C. in June is currently the most expensive (average of £657). 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?

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 10 June 2026.

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

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

Explore weekly flight availability from London to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 10 June 2026.

The most flights from LON to WAS are scheduled on a Monday (28 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (27 on average).

How much does it cost for a return flight from London to Washington, D.C.?

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

Share of one-stop return flights from London to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 34% of one-stop itineraries from London to Washington, D.C. on Cheapflights.

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

Average return fare for one-stop flights from London to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Shannon (SNN) is the most affordable one-stop option, with an average return flight price of £339.

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 35m.

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

Average stopover duration for one-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 Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 18m.

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

About 18% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 133 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 past year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

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

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 10 June 2026.
Check out reviews from past customers who have flown with Virgin Atlantic,JetBlue, andIcelandair from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

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
689 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.
JetBlue
7.1
Good
2,980 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

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
7.0
Good
672 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

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
8,052 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

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
8,035 reviews
Virgin Atlantic
7.5
Good
689 reviews
Check prices

Boarding

7.7

Entertainment

7.5

Comfort

7.3

Overall

7.5

Food

6.9

Crew

8.1

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

Find useful and relevant information for your journey from London to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as £514, British Airways can have you in Washington, D.C. from London in 11h 06m. The distance from London to Washington, D.C. is about 3652 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Icelandair (£329), United Airlines (£332), and TAP AIR PORTUGAL (£332) offers the cheapest pricing from London to Washington, D.C.. Users have found that Icelandair is 37% cheaper than the other options available to this destination.

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

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £352. Users have also found prices from £354 and £370 on Aer Lingus and TAP AIR PORTUGAL, respectively.

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

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: Air Canada (91%), Austrian Airlines (91%), Copa Airlines (91%).

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

    While on average a flight from London to Washington, D.C. is generally £1,019, our data shows the cheapest flight currently is £445. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £351 for that flight.

  • 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 holiday 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, September is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £446). Flying from London to Washington, D.C. in June is currently the most expensive (average of £657). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Alexandria

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Washington, D.C. on these airlines

Choose from the following airlines for your flight from London to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 10 June 2026.
Virgin Atlantic flights from London to Washington, D.C.
British Airways flights from London to Washington, D.C.
Finnair flights from London to Washington, D.C.

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

Discover the top 10 airlines that operate flights from London to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£329Average£507FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
United AirlinesCheapest£332Average£561FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
TAP AIR PORTUGALCheapest£332Average£414FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£365Average£716FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£378Average£560FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£400Average£573FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£405Average£601FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£408Average£538FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£411Average£577FlexibilityNo cancel feeOn-time70%
Search British Airways flights
JetBlueCheapest£415Average£598FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Washington, D.C.?

When you search for this flight from London to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Washington, D.C.?

Cheapflights simply makes it quick and affordable to book flights from London to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Washington, D.C. become cheaper?

Of course! You can now track prices for flights from London to Washington, D.C. and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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