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Gatwick

$349+ Cheap flights from Seattle (SEA) to Gatwick (LGW)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Seattle to Gatwick

Cheapest flights from Seattle to Gatwick
Explore the most affordable flight options available from Seattle to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This CrystalTravel deal was found by Cheapflights users on 12/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - LGW
1 stop12h 20mIcelandair
Fri 1/2311:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 12/19$741
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - LGW
1 stop12h 20mIcelandair
Thu 1/1511:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 12/19$809
This FlightHub deal was found by Cheapflights users on 12/19. 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.
Tue 12/3012:35 pmSEA - LGW
2 stops21h 15mSWISS
Wed 1/76:40 pmLGW - SEA
2 stops36h 03mSWISS
Deal found 12/19$911
This Mytrip deal was found by Cheapflights users on 12/20. 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.
Thu 12/252:35 pmSEA - LGW
2 stops17h 20mMultiple Airlines
Fri 1/232:00 pmLGW - SEA
2 stops26h 07mMultiple Airlines
Deal found 12/20$959
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:35 pmSEA - LGW
2 stops21h 15mSWISS
Fri 1/236:40 pmLGW - SEA
2 stops34h 32mSWISS
Deal found 12/19$1,029
This Kiwi.com deal was found by Cheapflights users on 12/19. 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 12/242:35 pmSEA - LGW
2 stops17h 45mMultiple Airlines
Fri 1/1611:55 amLGW - SEA
1 stop13h 05mMultiple Airlines
Deal found 12/19$1,053
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - LGW
1 stop12h 20mIcelandair
Fri 1/1611:55 amLGW - SEA
2 stops16h 44mIcelandair
Deal found 12/19$1,056
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - LGW
1 stop12h 20mIcelandair
Tue 1/1311:55 amLGW - SEA
2 stops29h 16mIcelandair
Deal found 12/19$1,073
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - LGW
1 stop12h 20mIcelandair
Sat 1/1711:55 amLGW - SEA
2 stops16h 44mIcelandair
Deal found 12/19$1,106

Find flight deals from Seattle to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Gatwick (LGW). 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 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$577
(Kiwi.com)

One-way from

$349
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$703
Provider with most accurate pricing for Seattle/Tacoma Intl-London Gatwick flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London Gatwick flights.
Search Deals
From Seattle/Tacoma Intl to London Gatwick
Search Deals
One-way flight from Seattle/Tacoma Intl to London Gatwick
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Gatwick 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 21, 2025.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Seattle

Fly to

Gatwick

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Thu 2/19

11:55 am-5:00 pm

1 stop13h 05m

$578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 2/21

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Wed 2/25

11:55 am-5:00 pm

1 stop13h 05m

$578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 2/11

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Mon 3/9

11:55 am-6:00 pm

1 stop13h 05m

$578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 1/29

2:00 pm-9:00 pm

2 stops23h 00m

London Gatwick

Thu 2/5

9:40 pm-7:16 pm

3 stops29h 36m

$610

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 2/11

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Fri 2/20

11:55 am-5:00 pm

1 stop13h 05m

$615

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 3/7

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Sun 3/29

3:40 pm-8:40 pm

1 stop13h 00m

$685

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 1/20

11:24 am-10:55 am

2 stops15h 31m

London Gatwick

Tue 1/27

11:55 am-5:00 pm

1 stop13h 05m

$729

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 1/23

12:35 pm-5:50 pm

2 stops21h 15m

London Gatwick

Sun 2/1

6:40 pm-10:43 pm

2 stops36h 03m

$734

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 1/9

12:35 pm-5:50 pm

2 stops21h 15m

London Gatwick

Wed 1/14

6:40 pm-10:43 pm

2 stops36h 03m

$784

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 1/9

12:35 pm-5:50 pm

2 stops21h 15m

London Gatwick

Tue 1/13

6:40 pm-9:12 pm

2 stops34h 32m

$784

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 23 results
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Compare providers for flights from Seattle to Gatwick

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 Seattle to Gatwick in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 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 Seattle-London Gatwick Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-London Gatwick Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-London Gatwick Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-London Gatwick Airport 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 Seattle-London Gatwick Airport 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 Seattle to Gatwick

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

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

Currently, May is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $494). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $802). 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 SEA to LGW?

Find hourly flight availability from Seattle to Gatwick. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

It’s optimal to fly from Seattle to London Gatwick Airport at noon. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Gatwick

Get insights into the airlines that provide service to Gatwick. 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 Gatwick. Reviews last updated December 21, 2025.
Read through reviews of airlines operating flights from Seattle to London Gatwick Airport, such as Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
592 reviews

Food

6.2

Comfort

6.9

Boarding

7.2

Overall

7.0

Entertainment

7.0

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
Icelandair
7.0
Good
592 reviews
Icelandair
7.0
Good
592 reviews

Food

6.2

Comfort

6.9

Boarding

7.2

Overall

7.0

Entertainment

7.0

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Gatwick. 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 from for flights from Seattle to London Gatwick?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to London Gatwick. You should not have trouble finding flights to London Gatwick from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to London Gatwick per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to London Gatwick. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

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

    A quick flight from Seattle to London Gatwick Airport can take about 12h 20m. Icelandair provides one of the quickest options available for as low as $578. The distance from Seattle to London Gatwick Airport is about 4807 mi.

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

    Flying on Icelandair is currently your cheapest option to London Gatwick Airport, with prices starting at $503. Icelandair is 25% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $494). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $802). 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
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley
Folkestone
Eastbourne

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 Seattle to Gatwick

Discover the top airline that operate flights from Seattle to Gatwick. 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$503Average$685FlexibilityNo cancel feeOn-time76%

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