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Cheap flights from London Gatwick Airport to Seattle from £369

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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
13 Oct — 20 Oct1
1 adult
1 adult, Economy

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 13 September 2025.

Round-trip from

£446

One-way from

£369

Popular in

August

Cheapest in

March

Average price

£460
Icelandair
  • Icelandair
  • 16/10-20/10
  • 2 total stops
  • 24h 35m total
  • London to Seattle
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7/12
  • 7/12
  • 3 total stops
  • 38h 36m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£65 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
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Average for round-trip flights in September 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 13 September 2025.

Thu 16/1015:40LGW - SEA
1 stop13h 00mIcelandair
Mon 20/1019:00SEA - LGW
1 stop11h 35mIcelandair
Deal found 11/9£446
Mon 13/1015:40LGW - SEA
1 stop13h 00mIcelandair
Mon 3/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 12/9£446
Tue 7/1015:40LGW - SEA
1 stop13h 00mIcelandair
Mon 10/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 11/9£448
Sat 18/1015:40LGW - SEA
1 stop13h 00mIcelandair
Fri 24/1015:45SEA - LGW
1 stop14h 55mIcelandair
Deal found 11/9£449
Sat 20/909:50LGW - SEA
2 stops59h 02mMultiple Airlines
Sat 4/1021:39SEA - LGW
1 stop29h 16mMultiple Airlines
Deal found 10/9£450
Mon 3/1112:30LGW - SEA
2 stops38h 30mAmerican Airlines
Sun 16/1122:08SEA - LGW
2 stops26h 52mAmerican Airlines
Deal found 12/9£451
Sat 4/1015:40LGW - SEA
1 stop13h 00mIcelandair
Sat 11/1019:00SEA - LGW
1 stop11h 35mIcelandair
Deal found 12/9£454
Sat 4/1015:40LGW - SEA
1 stop13h 00mIcelandair
Tue 7/715:45SEA - LGW
1 stop14h 55mIcelandair
Deal found 11/9£456
Mon 22/915:40LGW - SEA
1 stop13h 00mIcelandair
Mon 6/1019:00SEA - LGW
1 stop11h 35mIcelandair
Deal found 11/9£457
Sat 1/1111:55LGW - SEA
1 stop13h 05mIcelandair
Tue 11/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 11/9£460
Sun 26/1014:40LGW - SEA
1 stop34h 20mIcelandair
Sun 2/1114:35SEA - LGW
1 stop12h 20mIcelandair
Deal found 11/9£461

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 13 September 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 7/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 13/10

19:00-14:35

1 stop11h 35m

£448

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 10/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Thu 6/11

14:35-10:55

1 stop12h 20m

£465

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 9/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sun 2/11

14:35-10:55

1 stop12h 20m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 7/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Fri 7/11

14:35-10:55

1 stop12h 20m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sun 12/10

15:45-14:40

1 stop14h 55m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 6/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sun 12/10

19:00-14:40

1 stop11h 40m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 8/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sun 12/10

19:00-14:40

1 stop11h 40m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 8/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sat 11/10

19:00-14:35

1 stop11h 35m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Fri 7/11

14:35-10:55

1 stop12h 20m

£473

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sat 1/11

15:35-10:55

1 stop12h 20m

£484

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 19 results
1
2

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 return 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, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). 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 LGW to SEA?

Find hourly flight availability from Gatwick to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 September 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from London Gatwick Airport to Seattle by exploring options for tickets at midday.

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 13 September 2025.
Get a feel of what it's like to fly with Virgin Atlantic and Icelandair from London Gatwick Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Entertainment

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.4
Good
664 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Entertainment

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.0
Good
546 reviews
Virgin Atlantic
7.4
Good
664 reviews
Check prices

Entertainment

7.5

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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. 2 airlines 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?

    A quick flight from London Gatwick Airport to Seattle can take about 13h. Icelandair provides one of the quickest options available for as low as £448. London Gatwick Airport and Seattle are separated by a distance of 4807 mi.

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

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at £322. Another option worth looking into is Virgin Atlantic, starting at £449 return. Icelandair is priced at 39% lower than the current average price of a flight leaving 3 months from now.

  • 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 holiday 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 £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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Top 2 airlines flying from Gatwick to Seattle

Discover the top 2 airlines 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 858,174 searches. Data last updated 13 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£322Average£520FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£449Average£485FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Gatwick to Seattle?

When you search for this flight from Gatwick to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Gatwick to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Gatwick to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Gatwick to Seattle become cheaper?

Of course! You can now track prices for flights from Gatwick to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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