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$355+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
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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 enero 29, 2026.

This FlightHub deal was found by Cheapflights users on 1/28. 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.
vie. 4/103:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
lun. 4/203:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/28$481
This Icelandair deal was found by Cheapflights users on 1/27. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/248:35 pm
LHR
-
SEA
1 stop28h 25m
Icelandair
mar. 3/32:35 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/27$482
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/133:40 pm
LGW
-
SEA
1 stop34h 15m
Icelandair
dom. 5/247:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/27$484
This Trip.com deal was found by Cheapflights users on 1/27. 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.
dom. 5/103:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
jue. 5/147:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/27$485
This Ticket deal was found by Cheapflights users on 1/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/56:20 am
LHR
-
SEA
1 stop13h 05m
Virgin Atlantic
mié. 2/184:55 pm
SEA
-
LHR
Nonstop9h 35m
Virgin Atlantic
Deal found 1/28$485
This deal was found by Cheapflights users on 1/27. 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.
mar. 5/1210:55 am
LHR
-
SEA
1 stop15h 34m
Delta
jue. 5/287:20 am
SEA
-
LHR
1 stop15h 25m
Delta
Deal found 1/27$486
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/18:35 pm
LHR
-
SEA
1 stop28h 25m
Icelandair
dom. 3/293:40 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/27$487
This Trip.com deal was found by Cheapflights users on 1/27. 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.
jue. 2/2611:55 am
LGW
-
SEA
1 stop13h 05m
Icelandair
jue. 3/52:35 pm
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/27$491
This Trip.com deal was found by Cheapflights users on 1/27. 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.
mar. 2/1012:15 pm
LHR
-
SEA
1 stop12h 45m
Icelandair
mié. 2/252:35 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/27$491
This Trip.com deal was found by Cheapflights users on 1/26. 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.
dom. 3/18:35 pm
LHR
-
SEA
1 stop28h 25m
Icelandair
jue. 3/52:35 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/26$492
This The Travel House deal was found by Cheapflights users on 1/27. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/93:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
lun. 4/137:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/27$493
This oojo deal was found by Cheapflights users on 1/27. 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.
lun. 2/28:35 pm
LHR
-
SEA
1 stop28h 25m
Icelandair
dom. 2/82:35 pm
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 1/27$494

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 enero 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$481
(FlightHub)

One-way from

$355
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$644

Good round-trip deal

$593 or less

Good one-way deal

$609 or less
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
Search Deals
From London (LON) to Washington
Search Deals
One-way flight from London (LON) to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Washington.
Search Deals
Price to beat on a one-way flight from London (LON) to Washington.
Search Deals

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 enero 29, 2026.
Use the filters below to find and compare flights from London to Washington that are best for you.

Fly from

London

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

vie. 3/13

6:35 am-2:20 pm

1 stop14h 45m

Seattle/Tacoma Intl

vie. 3/20

12:25 pm-9:10 am

1 stop13h 45m

$504

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

mar. 2/24

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

mar. 3/3

2:35 pm-10:55 am

1 stop12h 20m

$511

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 3/18

6:35 am-9:14 pm

2 stops21h 39m

Seattle/Tacoma Intl

dom. 3/22

7:00 am-9:45 am

2 stops19h 45m

$516

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

jue. 6/11

9:00 am-4:59 pm

1 stop15h 59m

Seattle/Tacoma Intl

mar. 9/8

3:51 pm-12:20 pm

1 stop12h 29m

$525

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mar. 2/24

6:30 am-11:40 am

1 stop13h 10m

Seattle/Tacoma Intl

mar. 3/3

4:45 pm-10:30 am

Nonstop9h 45m

$526

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 2/25

6:30 am-11:40 am

1 stop13h 10m

Seattle/Tacoma Intl

mié. 3/11

5:40 pm-10:30 am

Nonstop9h 50m

$526

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

lun. 2/16

10:00 am-11:40 am

1 stop33h 40m

Seattle/Tacoma Intl

lun. 3/2

6:25 pm-11:55 am

Nonstop9h 30m

$527

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

mié. 5/13

7:25 am-6:32 pm

2 stops19h 07m

Seattle/Tacoma Intl

dom. 5/24

2:30 pm-12:20 pm

1 stop13h 50m

$533

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

vie. 7/3

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

dom. 7/12

7:00 pm-2:40 pm

1 stop11h 40m

$541

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

mié. 7/1

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

vie. 7/10

7:00 pm-2:40 pm

1 stop11h 40m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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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, March is the cheapest month in which you can book a flight from London to State of Washington (average of $407). Flying from London to State of Washington in August is currently the most expensive (average of $617). 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 enero 29, 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 enero 29, 2026.

The most flights from LON to USWA are scheduled on a Tuesday (21 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).

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 enero 29, 2026.
Read through reviews of airlines operating flights from London to Washington, such as Delta, Virgin Atlantic, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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.
Delta
7.9
Good
8,127 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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.
Virgin Atlantic
7.5
Good
678 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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.
American Airlines
7.2
Good
11,206 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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.
Icelandair
7.1
Good
606 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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.
British Airways
6.7
Okay
7,705 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Entertainment

7.8

Overall

7.9

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 13h 05m. Fly via United Airlines, Icelandair, or KLM to get the fastest option. There are 4807 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 Scandinavian Airlines, with whom users have recently found tickets for as low as $383. 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?

    While some choose either London Gatwick - Seattle/Tacoma Intl or London Stansted - Seattle/Tacoma Intl, London Heathrow - Seattle/Tacoma Intl is the most popular route 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 (89%), Air France (89%) and Delta (89%).

  • 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 $1,447, our data indicates the cheapest price to be $535. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around $451.

  • 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, March is the cheapest month in which you can book a flight from London to State of Washington (average of $407). Flying from London to State of Washington in August is currently the most expensive (average of $617). 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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Alternative routes for London to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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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 enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$467Average$899FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$574Average$801FlexibilityNo cancel feeOn-time72%
DeltaCheapest$575Average$864FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$589Average$854FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$625Average$767FlexibilityNo cancel feeOn-time70%

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