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$530+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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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 April 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$598
(Gotogate)

One-way from

$530
(Mytrip)

Popular in

August

Cheapest in

February

Average price

$609
Provider with most accurate pricing for London Gatwick-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for London Gatwick-Seattle/Tacoma Intl flights.
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From London Gatwick to Seattle/Tacoma Intl
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One-way flight from London Gatwick to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 19% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 15, 2025.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/83:40 pmLGW - SEA
1 stop34h 10mIcelandair
Thu 5/157:00 pmSEA - LGW
1 stop11h 40mIcelandair
Deal found 4/14$598
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/410:55 amLGW - SEA
1 stop17h 47mMultiple Airlines
Sun 5/1110:06 amSEA - LGW
1 stop16h 49mMultiple Airlines
Deal found 4/13$611
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:40 amLGW - SEA
2 stops20h 29mAmerican Airlines
Tue 5/65:22 amSEA - LGW
2 stops18h 48mAmerican Airlines
Deal found 4/15$646
This World Air Fares 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/812:20 pmLGW - SEA
2 stops20h 25mFinnair
Wed 5/1412:24 amSEA - LGW
2 stops24h 11mFinnair
Deal found 4/14$702
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1212:00 pmLGW - SEA
1 stop16h 32mAir France
Tue 6/2411:31 amSEA - LGW
1 stop14h 29mAir France
Deal found 4/14$737
This Virgin Atlantic 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2912:00 pmLGW - SEA
2 stops19h 47mVirgin Atlantic
Thu 6/511:16 amSEA - LGW
1 stop14h 44mVirgin Atlantic
Deal found 4/14$764

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 April 15, 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

Thu 5/8

3:40 pm-5:50 pm

1 stop34h 10m

Seattle/Tacoma Intl

Thu 5/15

7:00 pm-2:40 pm

1 stop11h 40m

$598

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 5/4

10:55 am-8:42 pm

1 stop17h 47m

Seattle/Tacoma Intl

Sun 5/11

10:06 am-10:55 am

1 stop16h 49m

$611

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/29

10:40 am-11:09 pm

2 stops20h 29m

Seattle/Tacoma Intl

Tue 5/6

5:22 am-8:10 am

2 stops18h 48m

$646

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 4/24

12:20 pm-1:02 am

2 stops20h 42m

Seattle/Tacoma Intl

Thu 5/1

7:20 am-8:10 am

2 stops16h 50m

$650

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/11

12:00 pm-8:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Mon 6/23

6:00 am-10:00 am

2 stops20h 00m

$727

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 6/12

12:00 pm-8:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Tue 6/24

11:31 am-10:00 am

1 stop14h 29m

$737

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 7/13

9:25 pm-8:28 pm

3 stops31h 03m

$530

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 7/12

10:45 am-12:31 pm

2 stops33h 46m

$589

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/22

3:40 pm-5:50 pm

1 stop34h 10m

$665

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 5/9

6:40 pm-9:31 pm

2 stops34h 51m

$741

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 15 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars

*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

How far ahead should I book a flight from London Gatwick Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Gatwick to Seattle. Price data was last updated on April 11, 2025.

The best time to book flights from London Gatwick Airport to Seattle is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $238). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of $411). 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 15, 2025.
See what other customers who have flown with Finnair, Air France and SWISS from London to Seattle have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Finnair
7.6
Good
1,269 reviews
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Air France
7.5
Good
1,435 reviews
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
SWISS
7.5
Good
1,578 reviews
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Virgin Atlantic
7.4
Good
642 reviews
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
JetBlue
7.3
Good
2,927 reviews
Finnair
7.6
Good
1,269 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Overall

7.6

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.

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.

  • What are the cheapest airlines flying from London Gatwick Airport to Seattle round-trip?

    Currently priced at $598, 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. Search Cheapflights for deals from American Airlines and Finnair - these airlines can fly you to your destination from $646 and $650, respectively. Icelandair is 20% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Gatwick Airport to Seattle one-way?

    One-way options have recently been found by users for as low as $589 on WestJet. Other airlines that offer cheap prices include Icelandair from $665 and SWISS from $741 one-way.

  • 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, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $238). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of $411). 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 London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$686FlexibilityNo cancel feeOn-time76%

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