Washington

$394+ Cheap flights from London (LON) to Washington

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
May 18 — May 251
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Cheap flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:30 am
STN
-
SEA
1 stop18h 40m
Multiple Airlines
Sun 4/267:10 pm
SEA
-
STN
1 stop20h 15m
Multiple Airlines
Deal found 4/14$692
This TravelTrolley deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelTrolley is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:45 pm
LHR
-
SEA
Nonstop10h 18m
Virgin Atlantic
Fri 7/107:15 am
SEA
-
LHR
1 stop15h 05m
Virgin Atlantic
Deal found 4/13$693
This deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Sat 5/27:00 pm
SEA
-
LGW
1 stop11h 35m
Icelandair
Deal found 4/14$694
This Trip.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:10 pm
LHR
-
SEA
1 stop32h 09m
Multiple Airlines
Sun 4/267:00 pm
SEA
-
LHR
2 stops16h 55m
Multiple Airlines
Deal found 4/14$694
This oojo deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Tue 9/87:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/14$695
This FlightHub deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:40 pm
LGW
-
SEA
1 stop28h 05m
Icelandair
Thu 10/17:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/16$696
This Trip.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/233:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Thu 9/247:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/14$697
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:05 pm
LHR
-
SEA
1 stop12h 50m
Icelandair
Wed 10/143:40 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 4/14$697
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:15 am
LTN
-
SEA
1 stop18h 55m
Multiple Airlines
Sun 4/267:10 pm
SEA
-
LTN
1 stop18h 30m
Multiple Airlines
Deal found 4/14$697
This deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Tue 5/127:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 4/14$698
This deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:50 am
LHR
-
SEA
Nonstop9h 45m
British Airways
Wed 5/68:20 pm
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 4/14$698
This deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Mon 5/113:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 4/14$699

Find flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$685
(Gotogate)

One-way from

$394
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$723

Good round-trip deal

$869 or less

Good one-way deal

$658 or less
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
From London (LON) to Washington
One-way flight from London (LON) to Washington
Highest demand for flights based on searches. 11% potential increase in price ($96 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from London (LON) to Washington.
Price to beat on a one-way flight from London (LON) to Washington.

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Washington 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 2,558,603 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from London to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 6/10

4:30 pm-6:25 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 6/15

6:00 am-9:05 am

1 stop19h 05m

$747

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 5/19

6:30 am-11:42 am

1 stop13h 12m

Seattle/Tacoma Intl

Mon 5/25

6:20 pm-12:10 pm

Nonstop9h 50m

$753

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Fri 5/15

6:20 am-5:10 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sat 5/23

7:10 pm-9:55 pm

1 stop18h 45m

$755

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 6/17

6:30 am-11:37 am

1 stop13h 07m

Seattle/Tacoma Intl

Fri 7/17

6:00 am-7:15 am

1 stop17h 15m

$761

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/6

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Tue 10/13

7:40 am-9:00 am

1 stop17h 20m

$763

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 5/28

9:55 am-4:30 pm

1 stop14h 35m

Seattle/Tacoma Intl

Sat 6/6

6:20 pm-12:10 pm

Nonstop9h 50m

$770

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 10/9

6:30 am-11:52 am

1 stop13h 22m

Seattle/Tacoma Intl

Fri 10/16

1:30 pm-10:00 am

1 stop12h 30m

$772

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 6/11

10:25 am-5:30 pm

1 stop15h 05m

Seattle/Tacoma Intl

Sun 6/14

6:50 pm-4:00 pm

1 stop13h 10m

$774

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 8/25

6:15 am-11:15 am

1 stop13h 00m

Seattle/Tacoma Intl

Wed 9/2

6:55 pm-5:35 pm

1 stop14h 40m

$775
Quickest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 8/12

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 8/26

3:10 pm-12:15 pm

1 stop13h 05m

$777

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from London to Washington

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

What is the cheapest month to book a flight from London to State of Washington?

Currently, February is the cheapest month in which you can book a flight from London to State of Washington (average of $390). Flying from London to State of Washington in October is currently the most expensive (average of $4,187). 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 WA?

Find hourly flight availability from London to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 18, 2026.

When flying from London to State of Washington, 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 State of Washington

Explore weekly flight availability from London to Washington. 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 April 18, 2026.

The most flights from LON to USWA are scheduled on a Monday (21 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (16 on average).

How much does it cost to fly round-trip from London to State of Washington?

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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. Reviews last updated April 18, 2026.
Read through reviews of airlines operating flights from London to Washington, such as Delta,Virgin Atlantic, andAir France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Entertainment

7.8

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from London to Washington. 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 State of Washington?

    There are many flights that can get you from London to State of Washington in 9h 55m. Fly via British Airways, KLM, or Delta to get the fastest option. There are 4783 mi between London and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from London to State of Washington one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $368. However, be on the lookout for offers from WestJet and Aer Lingus, as they are both options that can get you from London to State of Washington for a low price.

  • What are the most popular routes from London to State of Washington?

  • What are the most reliable airlines from London to State of Washington?

    The top 3 most reliable airlines when flying from London to State of Washington are KLM (95%), Delta (94%) and Virgin Atlantic (94%).

  • What are the cheapest flights from London to State of Washington?

    Looking for the cheapest flight from London to State of Washington? While on average our users pay $1,651, our data indicates the cheapest price to be $539. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around $620.

  • Can I find deals for flights from London to Washington that include hotel bookings?

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

  • How can I find direct flights from London to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington.

  • Can I find deals for business class flights from London to Washington?

    Yes. Cheapflights offers flight deals from London to Washington 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 State of Washington?

    Currently, February is the cheapest month in which you can book a flight from London to State of Washington (average of $390). Flying from London to State of Washington in October is currently the most expensive (average of $4,187). 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

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Top 5 airlines flying from London to Washington

Discover the top 5 airlines that operate flights from London to Washington. 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 2,558,603 searches. Data last updated April 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$403Average$625FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$574Average$895FlexibilityNo cancel feeOn-time72%
DeltaCheapest$594Average$1,009FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$618Average$985FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$671Average$874FlexibilityNo cancel feeOn-time70%

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