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.

£259 Cheap Flights from Seattle to London Gatwick Airport in 2025/26

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Find the cheapest flights from Seattle to London

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One-way

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19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£431Icelandair

Fri, 1 May - Sat, 16 May

14:35 - 10:55

SEA

LGW

12h 20m1 stop

11:55 - 18:00

LGW

SEA

13h 05m1 stop

£432Icelandair

Fri, 6 Mar - Tue, 17 Mar

15:40 - 14:40

SEA

LGW

15h 00m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£433Icelandair

Tue, 14 Apr - Wed, 22 Apr

19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£434Icelandair

Thu, 16 Apr - Sat, 25 Apr

19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 17:55

LGW

SEA

34h 15m1 stop

£435Icelandair

Sun, 12 Apr - Sun, 19 Apr

19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£437Icelandair

Sat, 9 May - Fri, 15 May

15:40 - 14:40

SEA

LGW

15h 00m1 stop

13:00 - 20:40

LGW

SEA

15h 40m1 stop

£437Icelandair

Tue, 28 Apr - Sun, 3 May

19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£443Icelandair

Wed, 8 Apr - Tue, 21 Apr

14:35 - 10:35

SEA

LGW

36h 00m3 stops

19:30 - 17:00

LGW

SEA

29h 30m3 stops

£443Multiple Airlines

Mon, 12 Jan - Thu, 15 Jan

19:00 - 14:40

SEA

LGW

11h 40m1 stop

15:40 - 20:40

LGW

SEA

13h 00m1 stop

£444Icelandair

Tue, 14 Apr - Thu, 23 Apr

Icelandair flights from Seattle to London Gatwick Airport

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

Icelandair

1 May

SEA19:00Seattle/Tacoma Intl

11h 40m

1 stop

LGW14:40London Gatwick

16 May

LGW15:40London Gatwick

13h 00m

1 stop

SEA20:40Seattle/Tacoma Intl

£431

Find similar

Icelandair

6 Mar

SEA14:35Seattle/Tacoma Intl

12h 20m

1 stop

LGW10:55London Gatwick

17 Mar

LGW11:55London Gatwick

13h 05m

1 stop

SEA18:00Seattle/Tacoma Intl

£432

Find similar

Icelandair

14 Apr

SEA15:40Seattle/Tacoma Intl

15h 00m

1 stop

LGW14:40London Gatwick

22 Apr

LGW15:40London Gatwick

13h 00m

1 stop

SEA20:40Seattle/Tacoma Intl

£433

Find similar

SWISS flights from Seattle to London Gatwick Airport

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

SWISS

6 May

SEA10:52Seattle/Tacoma Intl

22h 58m

2 stops

LGW17:50London Gatwick

12 May

LGW09:25London Gatwick

17h 05m

2 stops

SEA18:30Seattle/Tacoma Intl

£456

Find similar

SWISS

30 Jan

SEA12:35Seattle/Tacoma Intl

21h 15m

2 stops

LGW17:50London Gatwick

6 Feb

LGW18:40London Gatwick

34h 32m

2 stops

SEA21:12Seattle/Tacoma Intl

£474

Find similar

SWISS

14 Feb

SEA10:55Seattle/Tacoma Intl

46h 55m

2 stops

LGW17:50London Gatwick

22 Feb

LGW18:25London Gatwick

34h 36m

2 stops

SEA21:01Seattle/Tacoma Intl

£478

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

Fri 1/5

19:00-14:40

1 stop11h 40m

London Gatwick

Sat 16/5

15:40-20:40

1 stop13h 00m

£431

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 6/3

14:35-10:55

1 stop12h 20m

London Gatwick

Tue 17/3

11:55-18:00

1 stop13h 05m

£432

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 14/4

15:40-14:40

1 stop15h 00m

London Gatwick

Wed 22/4

15:40-20:40

1 stop13h 00m

£433

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 16/4

19:00-14:40

1 stop11h 40m

London Gatwick

Sat 25/4

15:40-20:40

1 stop13h 00m

£434

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 12/4

19:00-14:40

1 stop11h 40m

London Gatwick

Sun 19/4

15:40-17:55

1 stop34h 15m

£435

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 9/5

19:00-14:40

1 stop11h 40m

London Gatwick

Fri 15/5

15:40-20:40

1 stop13h 00m

£437

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 28/4

15:40-14:40

1 stop15h 00m

London Gatwick

Sun 3/5

13:00-20:40

1 stop15h 40m

£437

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 8/4

19:00-14:40

1 stop11h 40m

London Gatwick

Tue 21/4

15:40-20:40

1 stop13h 00m

£443

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 12/1

14:35-10:35

3 stops36h 00m

London Gatwick

Thu 15/1

19:30-17:00

3 stops29h 30m

£443

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 14/4

19:00-14:40

1 stop11h 40m

London Gatwick

Thu 23/4

15:40-20:40

1 stop13h 00m

£444

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 November. Flight prices, which tend to average around £388, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in November, then you should wait until January to fly from Seattle, when ticket prices are also cheap, with an average price of £416.

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

Fastest flight time	11h 40m
Direct flights	None

The fastest flight from Seattle to London Gatwick Airport takes 11h 40m

There are no direct flights from Seattle to London Gatwick Airport. There are no popular flight routes from Seattle to 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 40m 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

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Colchester

Bedford

Ramsgate

Hounslow

Stansted

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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.