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Cheap flights from Seattle to London Gatwick Airport from £209

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 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
6 Sep — 13 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
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 7 August 2026.

Sun 16/819:00 -
3 stops29h 40m
Wed 26/811:00 -
2 stops32h 45m
Deal found 2/8£472
Wed 30/915:40 -
2 stops19h 35m
Wed 7/1020:45 -
3 stops29h 10m
Deal found 3/8£478
Wed 21/1008:00 -
3 stops27h 05m
Wed 28/1017:40 -
2 stops26h 20m
Deal found 3/8£480
Tue 6/1015:55 -
1 stop18h 30m
Fri 9/1018:25 -
2 stops27h 20m
Deal found 5/8£481
Tue 22/914:10 -
2 stops22h 00m
Tue 6/1020:50 -
2 stops28h 09m
Deal found 5/8£482
Mon 7/908:00 -
3 stops27h 15m
Mon 21/919:55 -
3 stops26h 27m
Deal found 2/8£487
Thu 17/908:00 -
3 stops27h 15m
Thu 24/911:00 -
3 stops35h 22m
Deal found 3/8£488
Mon 14/908:00 -
3 stops28h 10m
Tue 22/920:50 -
2 stops28h 09m
Deal found 4/8£490

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 7 August 2026.

Round-trip from

£472

One-way from

£209

Popular in

July

Cheapest in

November

Average price

£615
16/8-26/8
  • 16/8-26/8
  • 5 total stops
  • 62h 25m total
  • Seattle to London
Search Deals
Icelandair
  • Icelandair
  • 13/10
  • 1 total stop
  • 11h 40m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£128 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 7 August 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 return flight

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Thu 12/11

19:05-16:30

1 stop37h 25m

London Gatwick

Tue 17/11

06:30-17:10

1 stop18h 40m

£658

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 1/12

19:05-16:30

1 stop37h 25m

London Gatwick

Sat 5/12

10:05-17:10

1 stop39h 05m

£703

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 27/11

19:05-09:10

1 stop30h 05m

London Gatwick

Fri 11/12

06:30-17:10

1 stop18h 40m

£740

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 7/9

12:35-09:55

1 stop37h 20m

London Gatwick

Tue 22/9

17:35-22:45

2 stops37h 10m

£865

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 11/12

19:05-22:35

1 stop19h 30m

London Gatwick

Fri 18/12

06:30-17:10

1 stop18h 40m

£877

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 18/9

19:15-22:25

1 stop19h 10m

London Gatwick

Mon 21/9

17:35-22:45

2 stops37h 10m

£886

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 31/1

19:05-09:10

1 stop30h 05m

London Gatwick

Thu 4/2

06:30-17:10

1 stop18h 40m

£892
Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 3/11

10:14-10:55

2 stops16h 41m

London Gatwick

Sun 8/11

11:55-20:38

2 stops16h 43m

£969

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 13/9

23:42-09:45

2 stops26h 03m

London Gatwick

Sat 19/9

10:35-22:37

3 stops44h 02m

£1,253

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 14/9

23:42-09:45

2 stops26h 03m

London Gatwick

Thu 24/9

10:35-21:55

3 stops43h 20m

£1,529

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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
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.

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?

    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 £658, Turkish Airlines can have you in London Gatwick Airport from Seattle in 37h 25m. The distance from Seattle to London Gatwick Airport is about 4807 mi.

  • 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
Gatwick
Luton
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Watford
Southend-on-Sea
Enfield
Kingston upon Thames
Southall
Dover
Romford
Borehamwood

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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?

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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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