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Cheap flights from Seattle to London Gatwick Airport from £215

SEA — LGW
21 Sep — 28 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Gatwick

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Gatwick

Wed 4/1107:45 -
3 stops27h 45m
Sun 15/1109:15 -
3 stops34h 45m
Deal found 21/8£478
Wed 4/1114:50 -
2 stops22h 55m
Wed 11/1107:00 -
2 stops21h 59m
Deal found 22/8£479
Sun 27/915:40 -
3 stops33h 30m
Tue 6/1011:00 -
2 stops17h 40m
Deal found 20/8£480
Sun 4/1015:55 -
2 stops19h 20m
Fri 9/1007:05 -
1 stop14h 40m
Deal found 19/8£481
Sun 27/915:55 -
2 stops34h 25m
Fri 9/1007:05 -
1 stop14h 40m
Deal found 21/8£483
Fri 9/1019:00 -
2 stops15h 00m
Fri 16/1017:00 -
3 stops35h 40m
Deal found 21/8£487
Sat 3/1015:55 -
1 stop22h 45m
Sat 10/1013:40 -
2 stops32h 05m
Deal found 19/8£487
Wed 11/1110:10 -
3 stops24h 40m
Tue 17/1119:30 -
2 stops25h 30m
Deal found 19/8£489
Fri 6/1114:50 -
3 stops33h 45m
Mon 9/1119:30 -
3 stops30h 52m
Deal found 22/8£492

Find flight deals from Seattle to Gatwick

Round-trip from

£478

One-way from

£215

Popular in

July

Cheapest in

November

Average price

£648
4/11-15/11
  • 4/11-15/11
  • 6 total stops
  • 62h 30m total
  • Seattle to London
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4/10
  • 4/10
  • 1 total stop
  • 20h 05m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£125 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
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 return flight
Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sat 17/10

19:00-14:35

1 stop11h 35m

London Gatwick

Fri 30/10

11:55-18:00

1 stop13h 05m

£580

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 16/9

17:40-18:45

1 stop17h 05m

London Gatwick

Wed 23/9

10:20-15:40

1 stop13h 20m

£616

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 30/11

10:12-15:45

2 stops21h 33m

London Gatwick

Wed 9/12

10:00-15:13

1 stop13h 13m

£638

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 13/1

15:25-15:45

1 stop16h 20m

London Gatwick

Sun 24/1

10:00-15:13

1 stop13h 13m

£678

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 27/9

19:15-09:55

1 stop30h 40m

London Gatwick

Mon 12/10

10:50-17:20

1 stop38h 30m

£681

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 27/9

14:54-18:50

2 stops19h 56m

London Gatwick

Mon 12/10

10:20-16:10

1 stop13h 50m

£708

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 21/10

11:33-14:45

2 stops19h 12m

London Gatwick

Sat 7/11

10:25-15:55

1 stop13h 30m

£726

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 20/10

20:45-18:45

2 stops38h 00m

London Gatwick

Mon 9/11

10:25-15:55

1 stop13h 30m

£736

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 21/10

11:33-14:45

2 stops19h 12m

London Gatwick

Fri 6/11

16:00-15:55

1 stop31h 55m

£741

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 25/9

18:45-16:00

1 stop13h 15m

London Gatwick

Sat 10/10

10:25-17:47

1 stop15h 22m

£742

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 return price

Related info for your journey

  • What airport do you fly from for flights from Seattle to London Gatwick?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to London Gatwick. On average, Seattle/Tacoma Intl has 0 outbound flights to London Gatwick per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    For as low as £580, Icelandair can have you in London Gatwick Airport from Seattle in 11h 35m. The distance from Seattle to London Gatwick Airport is about 4807 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 holiday 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.

See more FAQs

Travelling to a place near London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Southend-on-Sea
Barnet
Enfield
Kingston upon Thames
Southall
Watford
Dover
Romford

Browse thousands of different options on Cheapflights for your next trip

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

When you search for this flight from Seattle to Gatwick, 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 Seattle to Gatwick?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Gatwick 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 Seattle to Gatwick with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Gatwick flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Gatwick from Seattle today and book when prices fit your budget.

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