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Gatwick

$413+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
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 March 19, 2026.

This Trip.com deal was found by Cheapflights users on 3/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
-
LGW
2 stops18h 45m
Multiple Airlines
Tue 5/510:00 am
LGW
-
SEA
2 stops18h 40m
Multiple Airlines
Deal found 3/14$614
This Mytrip deal was found by Cheapflights users on 3/17. 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.
Tue 4/147:00 pm
SEA
-
LGW
2 stops19h 20m
Multiple Airlines
Tue 4/216:25 am
LGW
-
SEA
2 stops22h 15m
Multiple Airlines
Deal found 3/17$615
This Mytrip deal was found by Cheapflights users on 3/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
LGW
2 stops20h 30m
Multiple Airlines
Wed 4/229:20 am
LGW
-
SEA
2 stops19h 20m
Multiple Airlines
Deal found 3/15$620
This Mytrip deal was found by Cheapflights users on 3/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Tue 5/53:40 pm
LGW
-
SEA
1 stop34h 15m
Icelandair
Deal found 3/14$622
This Ticket deal was found by Cheapflights users on 3/17. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
LGW
1 stop15h 00m
Icelandair
Mon 4/273:40 pm
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 3/17$630
This Mytrip deal was found by Cheapflights users on 3/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
LGW
2 stops20h 30m
Multiple Airlines
Tue 4/289:40 am
LGW
-
SEA
3 stops21h 13m
Multiple Airlines
Deal found 3/14$635
This Mytrip deal was found by Cheapflights users on 3/17. 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 4/167:00 pm
SEA
-
LGW
2 stops16h 15m
Multiple Airlines
Mon 4/208:45 pm
LGW
-
SEA
3 stops31h 55m
Multiple Airlines
Deal found 3/17$637
This Mytrip deal was found by Cheapflights users on 3/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
LGW
2 stops16h 40m
Multiple Airlines
Mon 4/206:05 pm
LGW
-
SEA
2 stops34h 35m
Multiple Airlines
Deal found 3/14$638
This Mytrip deal was found by Cheapflights users on 3/16. 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 4/307:00 pm
SEA
-
LGW
3 stops34h 40m
Multiple Airlines
Thu 5/711:00 am
LGW
-
SEA
2 stops17h 40m
Multiple Airlines
Deal found 3/16$644

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 March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$612
(Mytrip)

One-way from

$413
(Trip.com)

Popular in

June

Cheapest in

November

Average price

$643
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. 14% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 19, 2026.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 4/14

6:00 am-9:25 am

2 stops19h 25m

London Gatwick

Tue 4/21

10:35 am-5:38 pm

1 stop15h 03m

$816

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 5/4

7:00 am-8:20 am

2 stops17h 20m

London Gatwick

Wed 6/3

9:20 am-8:53 pm

2 stops19h 33m

$840

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 5/12

10:30 am-5:50 pm

2 stops23h 20m

London Gatwick

Wed 5/20

9:20 am-9:06 pm

2 stops19h 46m

$990

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 4/24

8:42 am-1:10 pm

2 stops44h 28m

London Gatwick

Mon 4/27

10:50 am-5:15 pm

1 stop38h 25m

$1,059
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 4/2

6:40 pm-4:00 pm

1 stop13h 20m

London Gatwick

Sun 5/24

10:25 am-5:39 pm

1 stop15h 14m

$1,087

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 5/13

7:00 am-8:25 am

2 stops17h 25m

London Gatwick

Mon 5/18

9:25 am-6:30 pm

2 stops17h 05m

$1,266

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 5/18

9:02 am-2:40 pm

2 stops21h 38m

London Gatwick

Sun 5/24

10:20 am-3:40 pm

1 stop13h 20m

$1,280

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 6/26

11:45 am-9:35 am

1 stop13h 50m

London Gatwick

Fri 7/3

12:20 pm-10:46 pm

1 stop18h 26m

$1,325

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 4/9

10:48 am-10:25 pm

2 stops27h 37m

London Gatwick

Mon 4/20

2:05 pm-8:57 pm

2 stops38h 52m

$1,521

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 6/22

7:00 am-8:25 am

2 stops17h 25m

London Gatwick

Wed 7/22

9:20 am-6:32 pm

2 stops17h 12m

$1,526

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-London Gatwick Airport flight deals on Cheapflights vs. FlightHub >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 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 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, February 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.

How much does it cost to fly round-trip from Seattle to London Gatwick Airport?

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 March 19, 2026.
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
7.1
Good
622 reviews

Entertainment

7.0

Food

6.2

Crew

8.1

Boarding

7.2

Overall

7.1

Comfort

7.0

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
7.1
Good
622 reviews
Icelandair
7.1
Good
622 reviews

Entertainment

7.0

Food

6.2

Crew

8.1

Boarding

7.2

Overall

7.1

Comfort

7.0

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.

  • 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 22% 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, February 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
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
Slough

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 March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$503Average$647FlexibilityNo cancel feeOn-time76%

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