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Cheap flights from London to Washington, D.C. from £320

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
LON — WAS
26 Jan — 2 Feb1
1 adult

The best prices from London to Washington, D.C. are usually found in February or September, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap 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 21 January 2025.

Round-trip from

£380

One-way from

£320

Popular in

July

Cheapest in

February

Average price

£537

Good round-trip deal

£539 or less

Good one-way deal

£595 or less
Icelandair
  • Icelandair
  • 28/2-2/3
  • 2 total stops
  • 22h 00m total
  • London to Washington, D.C.
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7/3
  • 7/3
  • 3 total stops
  • 41h 29m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£71 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in January 2025
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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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Find 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 21 January 2025.

Fri 28/211:55LGW - BWI
1 stop11h 35mIcelandair
Sun 2/319:30BWI - LGW
1 stop10h 25mIcelandair
Deal found 20/1£380
Mon 20/111:00STN - BWI
1 stop11h 00mPLAY
Mon 27/118:10BWI - STN
1 stop10h 50mPLAY
Deal found 19/1£381
Thu 3/407:40LGW - BWI
1 stop15h 00mMultiple Airlines
Sun 6/418:50BWI - LGW
1 stop14h 30mMultiple Airlines
Deal found 20/1£390
Wed 2/408:25STN - BWI
1 stop14h 15mMultiple Airlines
Tue 8/418:50BWI - STN
1 stop15h 10mMultiple Airlines
Deal found 21/1£394
Thu 20/220:40LHR - BWI
1 stop26h 50mIcelandair
Wed 5/319:30BWI - LHR
1 stop19h 00mIcelandair
Deal found 21/1£398
Tue 18/320:40LHR - BWI
1 stop25h 20mMultiple Airlines
Mon 24/319:10BWI - LHR
2 stops21h 15mMultiple Airlines
Deal found 20/1£401
Mon 17/320:40LHR - IAD
1 stop26h 45mIcelandair
Thu 27/320:40IAD - LHR
1 stop18h 50mIcelandair
Deal found 20/1£452
Sun 9/211:55LGW - IAD
1 stop11h 30mIcelandair
Tue 18/219:40IAD - LGW
1 stop10h 15mIcelandair
Deal found 19/1£452
Mon 27/109:00LHR - IAD
1 stop12h 15mVirgin Atlantic
Mon 10/218:45IAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 20/1£453
Tue 4/1112:20LHR - DCA
1 stop15h 27mJetBlue
Mon 17/1108:00DCA - LHR
1 stop16h 55mJetBlue
Deal found 20/1£453
Wed 26/308:45LHR - IAD
1 stop16h 20mLufthansa
Wed 9/418:30IAD - LHR
Nonstop7h 25mLufthansa
Deal found 20/1£455
Wed 23/406:00LHR - IAD
1 stop13h 35mMultiple Airlines
Wed 14/518:30IAD - LHR
Nonstop7h 25mMultiple Airlines
Deal found 20/1£456

Find flights from London to Washington, D.C. within your budget

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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 28/2

11:55-18:30

1 stop11h 35m

Baltimore/Washington

Sun 2/3

19:30-10:55

1 stop10h 25m

£380

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 1/5

11:40-17:40

1 stop11h 00m

Baltimore/Washington

Sat 31/5

18:50-10:40

1 stop10h 50m

£388

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 3/4

07:40-17:40

1 stop15h 00m

Baltimore/Washington

Sun 6/4

18:50-14:20

1 stop14h 30m

£390

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Wed 2/4

08:25-17:40

1 stop14h 15m

Baltimore/Washington

Tue 8/4

18:50-15:00

1 stop15h 10m

£394

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 20/2

20:40-18:30

1 stop26h 50m

Baltimore/Washington

Wed 5/3

19:30-19:30

1 stop19h 00m

£398

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Tue 18/3

20:40-18:00

1 stop25h 20m

Baltimore/Washington

Mon 24/3

19:10-20:25

2 stops21h 15m

£401

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 27/1

09:00-16:15

1 stop12h 15m

Washington, D.C. Dulles Intl

Mon 10/2

18:45-07:15

Nonstop7h 30m

£453

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 26/3

08:45-21:05

1 stop16h 20m

Washington, D.C. Dulles Intl

Wed 9/4

18:30-06:55

Nonstop7h 25m

£455

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 19/3

08:25-19:58

1 stop15h 33m

Washington, D.C. Reagan-National

Wed 26/3

11:04-05:55

1 stop14h 51m

£455

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 1/4

16:25-20:50

1 stop33h 25m

Washington, D.C. Dulles Intl

Mon 7/4

22:20-15:35

1 stop12h 15m

£456

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 60 results
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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.

Travel insights for flights from London to Washington, D.C.

Get recent, data-driven insights about flights from London to Washington, D.C. including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from London to Washington, D.C.. Price data was last updated on 17 January 2025.

Booking 71 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.

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 £565). Flying from London to Washington, D.C. in July is currently the most expensive (average of £946). 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 21 January 2025.

A simple way to save on the total cost of your ticket is to fly from London to Washington, D.C. in the evening. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from London to Washington, D.C.?

Use this chart to determine the cheapest time to fly return from London to Washington, D.C.. Price data was last updated on 23 June 2024.

Travellers seeking maximum savings on their London to Washington, D.C. flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 21 January 2025.

The most flights from LON to WAS are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 21 January 2025.
Get a feel of what it's like to fly with TAP AIR PORTUGAL, Air Canada and Icelandair from London to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,521 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Overall

8.0

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    According to our current data, Icelandair (£380), PLAY (£388), and Lufthansa (£455) offers the cheapest pricing from London to Washington, D.C.. Users have found that Icelandair is 35% 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 PLAY. According to our data, you can fly for as low as £323. Users have also found prices from £366 and £367 on Icelandair and WorldTicket, 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 City - Washington, D.C. Dulles Intl 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: American Airlines (49%), Aer Lingus (49%), Finnair (49%).

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

    While on average a flight from London to Washington, D.C. is generally £1,189, our data shows the cheapest flight currently is £423. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £385 for that flight.

  • Where are the most common stopover locations when flying from London to Washington, D.C.?

    Most of the time, London to Washington, D.C. flights that have stopovers will stop in Reykjavik.

  • What are some popular things to do or see while on a stopover in Reykjavik?

    If you're on a stopover in Reykjavik and looking for things to do, consider visiting National Cathedral, Hallgrímskirkja, or Harpa. Travelers on a layover in Reykjavik can visit National Cathedral, Hallgrímskirkja, and Harpa, by traveling 23.0 mi, 23.2 mi, and 23.3 mi, respectively after landing at Reykjavik Keflavik Intl. Travellers can book a car hire at Reykjavik Keflavik Intl for about £40 per day to make their sightseeing more efficient.

  • Where are the least popular stopover locations for London to Washington, D.C. flights?

    Flights departing from London and landing in Washington, D.C. stopover in Dublin least frequently.

  • 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, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £565). Flying from London to Washington, D.C. in July is currently the most expensive (average of £946). 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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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 21 January 2025.
PLAY flights from London to Washington, D.C.
British Airways flights from London to Washington, D.C.
Virgin Atlantic 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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£257Average£464FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
DeltaCheapest£350Average£834FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£394Average£583FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£412Average£653FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Brussels AirlinesCheapest£418Average£784FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
JetBlueCheapest£418Average£625FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Scandinavian AirlinesCheapest£431Average£642FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air CanadaCheapest£447Average£680FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£477Average£701FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£482Average£673FlexibilityNo cancel feeOn-time77%
Search Air France 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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