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Cheap flights from London Gatwick Airport to Seattle from £391

LGW — SEA
23 Oct — 30 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Seattle

Tue 20/1015:40 -
1 stop13h 00m
Tue 27/1015:35 -
1 stop12h 20m
Deal found 22/9£422
Thu 1/1017:00 -
1 stop26h 15m
Sat 17/1013:30 -
1 stop11h 50m
Deal found 23/9£428
Wed 30/910:25 -
1 stop32h 50m
Fri 16/1013:30 -
1 stop11h 55m
Deal found 22/9£428
Mon 28/910:25 -
1 stop32h 50m
Tue 6/1013:30 -
1 stop18h 30m
Deal found 19/9£431
Fri 20/1116:45 -
1 stop29h 05m
Sat 28/1116:05 -
1 stop15h 40m
Deal found 22/9£432
Mon 16/1110:00 -
1 stop13h 14m
Sun 22/1115:25 -
1 stop16h 20m
Deal found 21/9£433
Mon 23/1110:00 -
1 stop13h 14m
Mon 7/1211:30 -
2 stops20h 15m
Deal found 23/9£434
Thu 1/1010:25 -
1 stop15h 22m
Sat 17/1013:30 -
1 stop11h 50m
Deal found 23/9£435
Sun 22/1110:00 -
1 stop13h 14m
Mon 11/121:55 -
2 stops27h 05m
Deal found 21/9£436
Sun 4/1015:40 -
1 stop13h 00m
Mon 28/1214:35 -
1 stop12h 20m
Deal found 23/9£437
Wed 16/1211:55 -
1 stop13h 05m
Mon 12/719:00 -
1 stop11h 40m
Deal found 20/9£438

Find flight deals from Gatwick to Seattle

Round-trip from

£422

One-way from

£391

Popular in

October

Cheapest in

January

Average price

£513
Icelandair
  • Icelandair
  • 20/10-27/10
  • 2 total stops
  • 25h 20m total
  • London to Seattle
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 17/11-31/12
  • 1 total stop
  • 30h 29m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£164 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 16% potential price decrease (£70 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 17/11

16:45-15:14

1 stop30h 29m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£391

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 15/12

10:00-22:05

2 stops20h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£391

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Fri 4/12

10:00-22:05

2 stops20h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£392

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Fri 12/2

10:00-22:02

2 stops20h 02m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£394

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 12/1

16:45-15:13

1 stop30h 28m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£398

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Thu 25/2

16:45-15:03

1 stop30h 18m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£398
Fastest return journey

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 27/10

11:55-18:00

1 stop13h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£406

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Mon 15/2

10:00-22:02

2 stops20h 02m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£432

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Mon 25/1

10:00-22:02

2 stops20h 02m

Seattle/Tacoma Intl

Tue 9/2

11:45-15:45

2 stops20h 00m

£446

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Sun 17/1

10:00-15:13

1 stop13h 13m

Seattle/Tacoma Intl

Fri 22/1

15:25-15:45

1 stop16h 20m

£460

Flights are sorted by cheapest return flights first.

Deals found on 19/9

Showing 1-10 of 24 resultsSorted by cheapest first
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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

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Seattle

How much does it cost for a return flight from London Gatwick Airport to Seattle?

Airfare is below average for this route at the moment.

London Gatwick Airport to Seattle flights typically cost between £945 and £1,059 in October.
The cheapest return price found within the last 5 days was £422 on Icelandair (20 Oct–27 Oct).

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with 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.
Icelandair
6.9
Okay
749 reviews
Check prices

Comfort

6.9

Crew

8.0

Food

6.1

Overall

6.9

Boarding

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Victoria,Sept 2026

KEF - EWR

Icelandair was excellent. Kayak business not so much. As mentioned in our comment through pilot, there were hidden fees when we bought the tickets.
Icelandair
6.9
Okay
749 reviews
Icelandair
6.9
Okay
749 reviews
Check prices

Comfort

6.9

Crew

8.0

Food

6.1

Overall

6.9

Boarding

7.2

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Victoria,Sept 2026

KEF - EWR

Icelandair was excellent. Kayak business not so much. As mentioned in our comment through pilot, there were hidden fees when we bought the tickets.

Related info for your journey

  • 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.

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

    A quick flight from London Gatwick Airport to Seattle can take about 13h 13m. Virgin Atlantic provides one of the quickest options available for as low as £460. London Gatwick Airport and Seattle are separated by a distance of 4807 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at £398. Icelandair is priced at 38% 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.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Federal Way
SeaTac

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Top airline flying from Gatwick to Seattle

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£398Average£549FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

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