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Cheap flights from Seattle to London Gatwick Airport from £239

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
19 Jul — 26 Jul1
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 19 June 2026.

Wed 26/823:25
SEA
-
LGW
1 stop31h 15m
Multiple Airlines
Wed 9/909:25
LGW
-
SEA
2 stops17h 07m
Multiple Airlines
Deal found 18/6£642
Sun 18/1013:30
SEA
-
LGW
1 stop11h 55m
Multiple Airlines
Wed 28/1010:00
LGW
-
SEA
1 stop13h 21m
Multiple Airlines
Deal found 19/6£644
Wed 23/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Sun 4/1015:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 19/6£644
Sat 19/919:00
SEA
-
LGW
1 stop11h 40m
Multiple Airlines
Sun 27/908:55
LGW
-
SEA
2 stops17h 50m
Multiple Airlines
Deal found 19/6£647
Thu 3/918:05
SEA
-
LGW
1 stop16h 45m
Condor
Sat 19/910:20
LGW
-
SEA
1 stop13h 40m
Condor
Deal found 18/6£647
Thu 3/918:05
SEA
-
LGW
1 stop16h 45m
Condor
Sun 20/910:20
LGW
-
SEA
1 stop13h 20m
Condor
Deal found 19/6£649
Mon 14/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Sun 4/1015:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 17/6£650
Sun 9/817:40
SEA
-
LGW
1 stop13h 00m
Condor
Fri 21/810:20
LGW
-
SEA
1 stop13h 40m
Condor
Deal found 18/6£650
Tue 15/913:30
SEA
-
LGW
1 stop11h 55m
Delta
Fri 16/1010:25
LGW
-
SEA
1 stop15h 22m
Delta
Deal found 16/6£651
Fri 28/819:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Sat 12/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 19/6£652
Tue 6/1007:00
SEA
-
LGW
2 stops17h 25m
SWISS
Wed 14/1009:25
LGW
-
SEA
2 stops17h 07m
SWISS
Deal found 19/6£653
Tue 15/907:00
SEA
-
LGW
2 stops17h 25m
SWISS
Tue 29/909:25
LGW
-
SEA
2 stops17h 07m
SWISS
Deal found 17/6£653

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 19 June 2026.

Round-trip from

£642

One-way from

£239

Popular in

July

Cheapest in

August

Average price

£718
SWISS
  • SWISS
  • 26/8-9/9
  • 3 total stops
  • 48h 22m total
  • Seattle to London
Search Deals
28/8
  • 28/8
  • 2 total stops
  • 30h 05m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 19 June 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 - LGW

SEALGW

Seattle/Tacoma Intl

Mon 14/9

18:45-16:00

1 stop13h 15m

London Gatwick

Mon 21/9

17:00-11:15

1 stop26h 15m

£660
Fastest return journey

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 13/9

13:30-09:25

1 stop11h 55m

London Gatwick

Sat 19/9

10:25-17:43

1 stop15h 18m

£688

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 10/8

13:30-16:00

1 stop18h 30m

London Gatwick

Tue 25/8

10:35-23:57

2 stops21h 22m

£696

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 12/8

07:00-08:25

2 stops17h 25m

London Gatwick

Fri 21/8

09:25-20:43

2 stops19h 18m

£778

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 30/9

07:00-08:25

2 stops17h 25m

London Gatwick

Wed 14/10

09:25-18:32

2 stops17h 07m

£795

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 12/8

07:00-08:25

2 stops17h 25m

London Gatwick

Tue 18/8

09:25-18:32

2 stops17h 07m

£801

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 2/9

07:00-08:25

2 stops17h 25m

London Gatwick

Wed 16/9

09:25-18:32

2 stops17h 07m

£853

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 10/8

07:00-08:25

2 stops17h 25m

London Gatwick

Tue 18/8

09:25-18:32

2 stops17h 07m

£903

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 1/11

20:05-09:10

1 stop29h 05m

London Gatwick

Sat 5/12

06:30-22:29

2 stops23h 59m

£931

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 31/7

13:30-09:25

1 stop11h 55m

London Gatwick

Sun 9/8

10:25-23:54

2 stops21h 29m

£933

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 23 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.

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, August is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of £389). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of £732). 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.

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

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 £688, Virgin Atlantic can have you in London Gatwick Airport from Seattle in 11h 55m. 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.

  • What is the cheapest month to book a flight from Seattle to London Gatwick Airport?

    Currently, August is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of £389). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of £732). 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 London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Guildford
Romford
Ipswich
Borehamwood
Folkestone
Southall

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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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