When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport?

Prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport are refreshed on a daily basis.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Gatwick Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Gatwick Airport.

What documentation or ID do you need to fly to London Gatwick Airport?

The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£166 Cheap Flights from Seattle to London Gatwick Airport in 2025

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Find the cheapest flights from Seattle to London

Round-trip

One-way

Last minute

Cheap return flights

07:20 - 18:25SEA-LGW

27h 05m2 stops

22:00 - 20:45LGW-SEA

30h 45m2 stops

£349

Find Deal

Wed, 13 Aug - Wed, 20 Aug

07:20 - 18:25SEA-LGW

27h 05m2 stops

22:00 - 20:45LGW-SEA

30h 45m2 stops

£350

Find Deal

Wed, 13 Aug - Wed, 20 Aug

19:00 - 14:40SEA-LGW

11h 40m1 stop

15:40 - 17:50LGW-SEA

34h 10m1 stop

£367Icelandair

Find Deal

Tue, 30 Sep - Sat, 11 Oct

22:58 - 08:35SEA-LGW

25h 37m1 stop

14:30 - 10:19LGW-SEA

27h 49m1 stop

£368

Find Deal

Sun, 17 Aug - Fri, 3 Oct

14:35 - 10:55SEA-LGW

12h 20m1 stop

11:55 - 17:00LGW-SEA

13h 05m1 stop

£370Icelandair

Find Deal

Wed, 12 Nov - Sat, 22 Nov

14:35 - 10:55SEA-LGW

12h 20m1 stop

11:55 - 17:00LGW-SEA

13h 05m1 stop

£371Icelandair

Find Deal

Wed, 12 Nov - Sat, 22 Nov

16:25 - 17:50SEA-LGW

17h 25m1 stop

18:35 - 18:36LGW-SEA

32h 01m2 stops

£387SWISS

Find Deal

Mon, 8 Sep - Tue, 16 Sep

16:25 - 17:50SEA-LGW

17h 25m1 stop

18:35 - 18:36LGW-SEA

32h 01m2 stops

£388SWISS

Find Deal

Mon, 11 Aug - Mon, 18 Aug

15:45 - 21:15SEA-LGW

21h 30m2 stops

09:40 - 17:50LGW-SEA

16h 10m2 stops

£394

Find Deal

Tue, 26 Aug - Tue, 2 Sep

16:25 - 17:50SEA-LGW

17h 25m1 stop

18:35 - 22:59LGW-SEA

36h 24m2 stops

£395SWISS

Find Deal

Mon, 11 Aug - Mon, 25 Aug

Icelandair flights from Seattle to London Gatwick Airport

Our best Icelandair deals on Seattle to London Gatwick Airport flight tickets

Icelandair

30 Sept

SEA19:00Seattle/Tacoma Intl

11h 40m

1 stop

LGW14:40London Gatwick

11 Oct

LGW15:40London Gatwick

34h 10m

1 stop

SEA17:50Seattle/Tacoma Intl

£367

Find similar

Icelandair

12 Nov

SEA14:35Seattle/Tacoma Intl

12h 20m

1 stop

LGW10:55London Gatwick

22 Nov

LGW11:55London Gatwick

13h 05m

1 stop

SEA17:00Seattle/Tacoma Intl

£370

Find similar

Icelandair

12 Nov

SEA14:35Seattle/Tacoma Intl

12h 20m

1 stop

LGW10:55London Gatwick

22 Nov

LGW11:55London Gatwick

13h 05m

1 stop

SEA17:00Seattle/Tacoma Intl

£371

Find similar

SWISS flights from Seattle to London Gatwick Airport

Our best SWISS deals on Seattle to London Gatwick Airport flight tickets

SWISS

8 Sept

SEA16:25Seattle/Tacoma Intl

17h 25m

1 stop

LGW17:50London Gatwick

16 Sept

LGW18:35London Gatwick

32h 01m

2 stops

SEA18:36Seattle/Tacoma Intl

£387

Find similar

SWISS

11 Aug

SEA16:25Seattle/Tacoma Intl

17h 25m

1 stop

LGW17:50London Gatwick

18 Aug

LGW18:35London Gatwick

32h 01m

2 stops

SEA18:36Seattle/Tacoma Intl

£388

Find similar

SWISS

11 Aug

SEA16:25Seattle/Tacoma Intl

17h 25m

1 stop

LGW17:50London Gatwick

25 Aug

LGW18:35London Gatwick

36h 24m

2 stops

SEA22:59Seattle/Tacoma Intl

£395

Find similar

momondo 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

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 13/8

07:20-18:25

2 stops27h 05m

London Gatwick

Wed 20/8

22:00-20:45

2 stops30h 45m

£349

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 13/8

07:20-18:25

2 stops27h 05m

London Gatwick

Wed 20/8

22:00-20:45

2 stops30h 45m

£350

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 30/9

19:00-14:40

1 stop11h 40m

London Gatwick

Sat 11/10

15:40-17:50

1 stop34h 10m

£367

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 17/8

22:58-08:35

1 stop25h 37m

London Gatwick

Fri 3/10

14:30-10:19

1 stop27h 49m

£368

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 12/11

14:35-10:55

1 stop12h 20m

London Gatwick

Sat 22/11

11:55-17:00

1 stop13h 05m

£370

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 12/11

14:35-10:55

1 stop12h 20m

London Gatwick

Sat 22/11

11:55-17:00

1 stop13h 05m

£371

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 8/9

16:25-17:50

1 stop17h 25m

London Gatwick

Tue 16/9

18:35-18:36

2 stops32h 01m

£387

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 11/8

16:25-17:50

1 stop17h 25m

London Gatwick

Mon 18/8

18:35-18:36

2 stops32h 01m

£388

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 26/8

15:45-21:15

2 stops21h 30m

London Gatwick

Tue 2/9

09:40-17:50

2 stops16h 10m

£394

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 11/8

16:25-17:50

1 stop17h 25m

London Gatwick

Mon 25/8

18:35-22:59

2 stops36h 24m

£395

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to London Gatwick Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Gatwick Airport?

The cheapest month to fly to London Gatwick Airport from Seattle is in January. Flight prices, which tend to average around £421, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in January, then you should wait until April to fly from Seattle, when ticket prices are also cheap, with an average price of £429.

When to book flights from Seattle to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Seattle to London Gatwick Airport (SEA to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to London Gatwick Airport

Best price found	£166
Fastest flight time	11h 35m
Direct flights	None

The best one-way flight to London Gatwick Airport from Seattle in the past 72 hours is £166. The best return flight deal from Seattle to London Gatwick Airport found on momondo in the last 72 hours is £349.

The fastest flight from Seattle to London Gatwick Airport takes 11h 35m

There are no direct flights from Seattle to London Gatwick Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - London Gatwick Airport.

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How far is Seattle/Tacoma Intl to London Gatwick by plane?
The straight-line distance from Seattle/Tacoma Intl to London Gatwick is 4798.7 mi. 11h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport?
Prices for flights from Seattle/Tacoma Intl Airport to London Gatwick Airport are refreshed on a daily basis.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Gatwick Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Gatwick Airport.
What documentation or ID do you need to fly to London Gatwick Airport?
The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Eastbourne

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Luton

Slough

Southend-on-Sea

Maidstone

Canterbury

Gatwick

Ipswich

Ilford

Dartford

Guildford

Colchester

Worthing

Hounslow

Dover

Winchester

Margate

Chelmsford

Bedford

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to London?

It is quick and easy to find Seattle to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Seattle to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to London.

I’m not ready to book a flight from Seattle to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.