HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$556+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Gatwick to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find 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 October 28, 2025.

This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 12/22:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/26$594
This Travelis deal was found by Cheapflights users on 10/27. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2411:55 amLGW - SEA
1 stop13h 05mIcelandair
Mon 12/82:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/27$600
This Justfly.com deal was found by Cheapflights users on 10/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2411:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 12/22:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/27$611
This FlightHub deal was found by Cheapflights users on 10/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:55 amLGW - SEA
1 stop13h 05mIcelandair
Wed 12/32:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/27$612
This oojo deal was found by Cheapflights users on 10/27. 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.
Wed 11/511:55 amLGW - SEA
1 stop13h 05mIcelandair
Thu 11/132:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/27$613
This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:55 amLGW - SEA
1 stop13h 05mIcelandair
Thu 12/112:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/26$616
This Booking.com deal was found by Cheapflights users on 10/27. 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.
Tue 12/1611:55 amLGW - SEA
1 stop13h 05mIcelandair
Wed 1/142:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/27$624
This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:55 amLGW - SEA
1 stop13h 05mIcelandair
Thu 12/42:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/26$625
This Gotogate deal was found by Cheapflights users on 10/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:55 amLGW - SEA
1 stop13h 05mIcelandair
Mon 12/82:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 10/26$626

Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$594
(Gotogate)

One-way from

$556
(Norse)

Popular in

August

Cheapest in

March

Average price

$602
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. 14% potential increase in price ($120 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 28, 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

Tue 11/11

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Mon 11/17

2:35 pm-10:55 am

1 stop12h 20m

$635

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 11/11

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 11/18

2:35 pm-10:55 am

1 stop12h 20m

$635

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 11/12

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 11/20

2:35 pm-10:55 am

1 stop12h 20m

$635

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 12/16

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 1/15

2:35 pm-10:55 am

1 stop12h 20m

$638

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 12/16

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Wed 1/14

2:35 pm-10:55 am

1 stop12h 20m

$638

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 11/11

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 11/16

2:35 pm-10:55 am

1 stop12h 20m

$668

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 11/12

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 11/16

2:35 pm-10:55 am

1 stop12h 20m

$668

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 11/14

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 12/2

2:35 pm-10:55 am

1 stop12h 20m

$668

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 11/7

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 11/18

2:35 pm-10:55 am

1 stop12h 20m

$669

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 12/15

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 1/8

2:35 pm-10:55 am

1 stop12h 20m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 23 results
1
2
3

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 October.
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 $410). Flying from London Gatwick Airport to Seattle in August is currently the most expensive (average of $768). 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 October 28, 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
7.1
Good
562 reviews

Boarding

7.2

Overall

7.1

Comfort

6.9

Food

6.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

KEF - EWR

The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient
Icelandair
7.1
Good
562 reviews
Icelandair
7.1
Good
562 reviews

Boarding

7.2

Overall

7.1

Comfort

6.9

Food

6.2

Entertainment

7.0

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

KEF - EWR

The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient

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 41% 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 $410). Flying from London Gatwick Airport to Seattle in August is currently the most expensive (average of $768). 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
SeaTac
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Fife
Issaquah

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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$418Average$899FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.