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$531+ Cheap flights from Gatwick (LGW) to Seattle (SEA)

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Gatwick to Seattle

Cheapest flights from Gatwick to Seattle
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 1/62:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 12/10$848
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/245:55 amLGW - SEA
2 stops17h 45mMultiple Airlines
Tue 1/610:04 amSEA - LGW
1 stop35h 56mMultiple Airlines
Deal found 12/11$932
This oojo deal was found by Cheapflights users on 12/10. 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.
Fri 12/2611:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 12/302:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 12/10$1,038
This oojo deal was found by Cheapflights users on 12/11. 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.
Fri 12/2611:55 amLGW - SEA
1 stop13h 05mIcelandair
Wed 12/312:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 12/11$1,060

Find flight deals from Gatwick to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Seattle (SEA). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$611

One-way from

$531
(Norse)

Popular in

January

Cheapest in

April

Average price

$759
Provider with most accurate pricing for London Gatwick-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Gatwick-Seattle/Tacoma Intl flights.
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From London Gatwick to Seattle/Tacoma Intl
Search Deals
One-way flight from London Gatwick to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($61 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Gatwick to Seattle 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 December 12, 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Gatwick

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 2/13

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 2/19

2:35 pm-10:55 am

1 stop12h 20m

$767

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 1/26

11:55 am-8:39 pm

2 stops16h 44m

Seattle/Tacoma Intl

Thu 1/29

2:35 pm-10:55 am

1 stop12h 20m

$776

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 1/21

11:55 am-8:39 pm

2 stops16h 44m

Seattle/Tacoma Intl

Sun 1/25

2:35 pm-10:55 am

1 stop12h 20m

$776

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 2/2

11:55 am-8:39 pm

2 stops16h 44m

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-10:55 am

1 stop12h 20m

$790

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 2/2

11:55 am-8:39 pm

2 stops16h 44m

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-10:55 am

1 stop12h 20m

$790

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 4/9

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 4/13

7:55 pm-2:40 pm

2 stops34h 45m

$801

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 4/8

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 4/15

11:10 pm-2:40 pm

2 stops31h 30m

$802

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/3

10:20 am-3:40 pm

1 stop13h 20m

Seattle/Tacoma Intl

Wed 7/15

5:40 pm-2:40 pm

1 stop13h 00m

$819

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 1/14

11:40 am-10:16 pm

1 stop18h 36m

Seattle/Tacoma Intl

Wed 1/21

8:10 am-9:45 am

1 stop17h 35m

$822

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 3/14

11:40 am-10:16 pm

1 stop17h 36m

Seattle/Tacoma Intl

Sun 3/22

3:10 pm-9:45 am

2 stops35h 35m

$847

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 22 results
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Compare providers for flights from Gatwick to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Gatwick to Seattle in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 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 Gatwick Airport-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Gatwick Airport-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Gatwick Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Gatwick Airport-Seattle flights, Cheapflights users trust eDreams the most. eDreams 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 Gatwick Airport-Seattle 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 Gatwick to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick 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 Gatwick Airport to Seattle

What is the cheapest month to book a flight from London Gatwick Airport to Seattle?

Currently, March is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $408). Flying from London Gatwick Airport to Seattle in August is currently the most expensive (average of $752). 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.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with Icelandair from London Gatwick Airport to Seattle 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.
Icelandair
7.0
Good
589 reviews

Entertainment

7.0

Overall

7.0

Comfort

6.9

Boarding

7.2

Crew

8.0

Food

6.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.
Icelandair
7.0
Good
589 reviews
Icelandair
7.0
Good
589 reviews

Entertainment

7.0

Overall

7.0

Comfort

6.9

Boarding

7.2

Crew

8.0

Food

6.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMS - KEF

We paid a total of 328.00 for specific seats and we were not assigned to any of the seats for which we paid.

Related info for your journey

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

  • What airport do you fly into for flights to Seattle from London Gatwick?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Seattle. 1 airline have flights to Seattle/Tacoma Intl from London Gatwick on a regular basis. Booking flights from London Gatwick to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.

  • How long is the flight from London Gatwick Airport to Seattle?

    There are many flights that can get you from London Gatwick Airport to Seattle in 13h 05m. Fly via Icelandair to get the fastest option. London Gatwick Airport and Seattle are separated by a distance of 4807 mi.

  • What is the cheapest airline to fly from London Gatwick Airport to Seattle round-trip?

    Currently priced at $418, Icelandair will fly you from London Gatwick Airport to Seattle and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Icelandair is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Gatwick to Seattle that include hotel bookings?

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

  • How can I find direct flights from Gatwick to Seattle?

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

  • Can I find deals for business class flights from Gatwick to Seattle?

    Yes. Cheapflights offers flight deals from Gatwick to Seattle 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 Gatwick Airport to Seattle?

    Currently, March is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $408). Flying from London Gatwick Airport to Seattle in August is currently the most expensive (average of $752). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Gatwick to Seattle

Discover the top airline that operate flights from Gatwick to Seattle. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$418Average$899FlexibilityNo cancel feeOn-time76%

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