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Gatwick

$272+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$508
(Cheapflightsfares)

One-way from

$272
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$734
From Seattle/Tacoma Intl to London Gatwick
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One-way flight from Seattle/Tacoma Intl to London Gatwick
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Highest demand for flights based on searches. 9% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 pmSEA - LGW
1 stop11h 40mIcelandair
Wed 10/153:40 pmLGW - SEA
1 stop13h 00mIcelandair
Deal found 9/16$508
This Gurufare deal was found by Cheapflights users on 9/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:35 pmSEA - LGW
1 stop12h 20mIcelandair
Wed 11/1911:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/15$511
This Gurufare deal was found by Cheapflights users on 9/16. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/182:35 pmSEA - LGW
1 stop12h 20mIcelandair
Thu 11/2711:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/16$512
This Mytrip deal was found by Cheapflights users on 9/15. 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 12/12:35 pmSEA - LGW
2 stops18h 45mMultiple Airlines
Sun 12/148:25 amLGW - SEA
2 stops16h 35mMultiple Airlines
Deal found 9/15$514
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:35 pmSEA - LGW
1 stop12h 20mIcelandair
Thu 11/2011:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/15$518
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:35 pmSEA - LGW
1 stop12h 20mIcelandair
Tue 12/211:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/16$519
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/173:45 pmSEA - LGW
1 stop14h 55mIcelandair
Fri 10/243:40 pmLGW - SEA
1 stop13h 00mIcelandair
Deal found 9/16$522
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Tue 10/1410:00 amSEA - LGW
2 stops18h 20mMultiple Airlines
Tue 10/219:35 pmLGW - SEA
2 stops24h 41mMultiple Airlines
Deal found 9/16$523
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:35 pmSEA - LGW
1 stop12h 20mIcelandair
Fri 11/2811:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/15$525
This Mytrip deal was found by Cheapflights users on 9/16. 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.
Mon 10/63:45 pmSEA - LGW
2 stops18h 50mMultiple Airlines
Mon 10/139:45 amLGW - SEA
2 stops18h 55mMultiple Airlines
Deal found 9/16$528
This Booking.com deal was found by Cheapflights users on 9/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:35 pmSEA - LGW
1 stop12h 20mIcelandair
Fri 11/2811:55 amLGW - SEA
1 stop13h 05mIcelandair
Deal found 9/16$530
This Mytrip deal was found by Cheapflights users on 9/17. 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.
Sun 10/53:45 pmSEA - LGW
2 stops21h 10mMultiple Airlines
Thu 10/911:05 amLGW - SEA
2 stops14h 45mMultiple Airlines
Deal found 9/17$531

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 September 17, 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

Wed 11/5

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Fri 11/21

11:55 am-5:00 pm

1 stop13h 05m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 3/6

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Mon 3/30

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 3/6

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Tue 3/31

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Sun 3/29

3:40 pm-9:10 pm

1 stop13h 30m

$518

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-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 3/8

3:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Sun 3/29

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 3/3

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Sun 3/29

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Tue 3/31

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 3/7

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Tue 3/31

3:40 pm-9:10 pm

1 stop13h 30m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 3/5

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Sun 3/29

3:40 pm-9:10 pm

1 stop13h 30m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 21 results
1
2
3

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, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $569). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $765). 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 September 17, 2025.

It’s optimal to fly from Seattle to London Gatwick Airport at noon. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the morning.

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 September 17, 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
545 reviews

Overall

7.0

Boarding

7.2

Food

6.2

Comfort

6.9

Crew

8.0

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.
Icelandair
7.0
Good
545 reviews
Icelandair
7.0
Good
545 reviews

Overall

7.0

Boarding

7.2

Food

6.2

Comfort

6.9

Crew

8.0

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

GVA - KEF

Terrible customer service when dealing with phone representatives. Baggage was lost.

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 $518. 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, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $569). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $765). 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
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Wembley
Folkestone
Chichester
Eastbourne
Sutton

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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$503Average$651FlexibilityNo cancel feeOn-time76%

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