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$476+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Sat 5/233:40 pm
SEA
-
LGW
1 stop12h 05m
Icelandair
Deal found 1/26$485
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/103:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Mon 4/203:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/26$490
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.
Thu 2/2611:55 am
LGW
-
SEA
1 stop13h 05m
Icelandair
Thu 3/52:35 pm
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/27$491
This EaseMyTrip 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Wed 4/297:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/27$493
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.
Sat 4/253:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Sat 5/23:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/27$501
This Expedia deal was found by Cheapflights users on 1/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:40 pm
LGW
-
SEA
2 stops36h 03m
SWISS
Tue 3/312:32 pm
SEA
-
LGW
2 stops21h 18m
SWISS
Deal found 1/25$502
This Gotogate deal was found by Cheapflights users on 1/25. 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.
Mon 5/113:40 pm
LGW
-
SEA
1 stop34h 15m
Icelandair
Sun 5/317:00 pm
SEA
-
LGW
1 stop32h 45m
Icelandair
Deal found 1/25$503
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Sun 5/317:00 pm
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 1/26$506
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Sun 5/317:00 pm
SEA
-
LGW
1 stop32h 45m
Icelandair
Deal found 1/26$507
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:40 pm
LGW
-
SEA
2 stops34h 32m
SWISS
Tue 2/1012:35 pm
SEA
-
LGW
2 stops21h 15m
SWISS
Deal found 1/26$508
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.
Sat 5/21:00 pm
LGW
-
SEA
1 stop15h 40m
Icelandair
Sat 5/233:40 pm
SEA
-
LGW
1 stop12h 05m
Icelandair
Deal found 1/27$509

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$484
(Mytrip)

One-way from

$476
(Mytrip)

Popular in

August

Cheapest in

March

Average price

$597
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.
Search Deals
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. 16% potential increase in price ($132 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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 4/24

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Tue 5/5

7:00 pm-2:40 pm

1 stop11h 40m

$501

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/25

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sat 5/2

3:40 pm-11:45 am

1 stop12h 05m

$501

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 3/10

11:55 am-6:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/17

3:35 pm-10:55 am

1 stop12h 20m

$511

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 5/8

9:25 am-11:29 pm

2 stops22h 04m

Seattle/Tacoma Intl

Tue 5/19

9:55 am-5:50 pm

2 stops23h 55m

$518

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/14

9:25 am-10:37 pm

2 stops21h 12m

Seattle/Tacoma Intl

Tue 4/21

10:48 am-8:20 am

2 stops37h 32m

$533

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 6/13

9:25 am-2:35 pm

1 stop13h 10m

Seattle/Tacoma Intl

Wed 9/9

7:00 am-8:20 am

2 stops17h 20m

$554

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 6/15

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 9/6

3:40 pm-2:40 pm

1 stop15h 00m

$555

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 6/13

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 9/6

3:40 pm-2:40 pm

1 stop15h 00m

$555

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/10

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 9/6

7:00 pm-2:40 pm

1 stop11h 40m

$555

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 6/13

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 9/7

11:25 pm-2:40 pm

1 stop31h 15m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
1
2
3
  • Most accurate provider: When it comes to deals on London Gatwick Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Gatwick Airport-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $407). 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 January 27, 2026.
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
7.1
Good
603 reviews

Food

6.2

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Overall

7.1

Crew

8.0

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
7.1
Good
603 reviews
Icelandair
7.1
Good
603 reviews

Food

6.2

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Overall

7.1

Crew

8.0

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. Fly via Icelandair or SWISS to get the fastest option. London Gatwick Airport and Seattle are separated by a distance of 4807 mi. This flight may include one or multiple stops.

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

    Currently priced at $467, 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 31% 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 $407). 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
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Puyallup
Kirkland
Kent
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Marysville
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Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$467Average$899FlexibilityNo cancel feeOn-time76%

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