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

Prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport were last updated today.

How many operators does momondo search for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?

There is 1 operator available for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport as of January 2026.

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

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£314 Cheap Flights from London Gatwick Airport to Seattle in 2026

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Find the cheapest flights from London Gatwick Airport to Seattle

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

09:25 - 23:29

LGW

SEA

22h 04m

2 stops

09:55 - 17:50

SEA

LGW

23h 55m

2 stops

£379SWISS

tors, 30 apr - mån, 11 maj

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

19:00 - 14:40

SEA

LGW

11h 40m

1 stop

£380Icelandair

tis, 14 apr - tors, 4 jun

11:55 - 17:00

LGW

SEA

13h 05m

1 stop

14:35 - 10:55

SEA

LGW

12h 20m

1 stop

£384Icelandair

tors, 19 feb - tors, 26 feb

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

19:00 - 14:40

SEA

LGW

11h 40m

1 stop

£387Icelandair

tis, 7 jul - tis, 21 jul

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

15:40 - 14:40

SEA

LGW

15h 00m

1 stop

£388Icelandair

ons, 1 jul - tis, 14 jul

09:25 - 14:35

LGW

SEA

13h 10m

1 stop

16:30 - 08:25

SEA

LGW

31h 55m

1 stop

£390SWISS

lör, 6 jun - lör, 20 jun

09:25 - 14:35

LGW

SEA

13h 10m

1 stop

16:30 - 08:25

SEA

LGW

31h 55m

1 stop

£390SWISS

lör, 6 jun - lör, 20 jun

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

15:40 - 14:40

SEA

LGW

15h 00m

1 stop

£391Icelandair

lör, 16 maj - tis, 2 jun

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

15:40 - 11:45

SEA

LGW

12h 05m

1 stop

£393Icelandair

ons, 20 maj - lör, 30 maj

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

19:00 - 14:40

SEA

LGW

11h 40m

1 stop

£395Icelandair

tors, 11 jun - tis, 16 jun

Delta flights from London Gatwick Airport to Seattle

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

Delta

21 Apr

LGW10:35London Gatwick

15h 03m

1 stop

SEA17:38Seattle/Tacoma Intl

25 Apr

SEA18:40Seattle/Tacoma Intl

13h 05m

1 stop

LGW15:45London Gatwick

£462

Delta

22 May

LGW10:25London Gatwick

15h 14m

1 stop

SEA17:39Seattle/Tacoma Intl

31 May

SEA13:30Seattle/Tacoma Intl

11h 55m

1 stop

LGW09:25London Gatwick

£492

SWISS flights from London Gatwick Airport to Seattle

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

SWISS

30 Apr

LGW09:25London Gatwick

22h 04m

2 stops

SEA23:29Seattle/Tacoma Intl

11 May

SEA09:55Seattle/Tacoma Intl

23h 55m

2 stops

LGW17:50London Gatwick

£379

SWISS

6 Jun

LGW09:25London Gatwick

13h 10m

1 stop

SEA14:35Seattle/Tacoma Intl

20 Jun

SEA16:30Seattle/Tacoma Intl

31h 55m

1 stop

LGW08:25London Gatwick

£390

SWISS

6 Jun

LGW09:25London Gatwick

13h 10m

1 stop

SEA14:35Seattle/Tacoma Intl

20 Jun

SEA16:30Seattle/Tacoma Intl

31h 55m

1 stop

LGW08:25London Gatwick

£390

momondo Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

tors 30/4

09:25-23:29

2 stops22h 04m

Seattle/Tacoma Intl

mån 11/5

09:55-17:50

2 stops23h 55m

£379

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

tis 14/4

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

tors 4/6

19:00-14:40

1 stop11h 40m

£380

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

tors 19/2

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

tors 26/2

14:35-10:55

1 stop12h 20m

£384

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

tis 7/7

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

tis 21/7

19:00-14:40

1 stop11h 40m

£387

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

ons 1/7

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

tis 14/7

15:40-14:40

1 stop15h 00m

£388

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

lör 6/6

09:25-14:35

1 stop13h 10m

Seattle/Tacoma Intl

lör 20/6

16:30-08:25

1 stop31h 55m

£390

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

lör 6/6

09:25-14:35

1 stop13h 10m

Seattle/Tacoma Intl

lör 20/6

16:30-08:25

1 stop31h 55m

£390

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

lör 16/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

tis 2/6

15:40-14:40

1 stop15h 00m

£391

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

ons 20/5

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

lör 30/5

15:40-11:45

1 stop12h 05m

£393

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

tors 11/6

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

tis 16/6

19:00-14:40

1 stop11h 40m

£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 London Gatwick Airport to Seattle

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 Seattle?

The cheapest month to fly to Seattle from London Gatwick Airport is in March. Flight prices, which tend to average around £381, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Seattle, with average flight prices from London Gatwick Airport averaging around £400.

What is the cheapest day to depart on your flight to Seattle?

According to our data, Wednesday is the cheapest day to fly to Seattle from London Gatwick Airport. The lowest ticket price found for a Wednesday departure recently was £583. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £652.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is at midday. momondo users have found flights departing from London Gatwick Airport to Seattle at midday for as low as £610. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £623.

When to book flights from London Gatwick Airport to Seattle

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

Estimated return price

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

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

Fastest flight time	13h 00m
Direct flights	None

The fastest flight from London Gatwick Airport to Seattle takes 13h 00m

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

Search flight deals

How far is London Gatwick to Seattle/Tacoma Intl by plane?
The straight-line distance from London Gatwick to Seattle/Tacoma Intl is 4798.7 mi. A reasonable flight in good conditions will take 13h 00m.
When did momondo last update prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?
There is 1 operator available for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport as of January 2026.
How old do you have to be to fly from London Gatwick Airport to Seattle/Tacoma Intl 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 London Gatwick Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Gatwick Airport to Seattle?
Based on momondo bookings for flights between London Gatwick Airport and Seattle, the leading airline is Icelandair, making up 100% of the total bookings.

Best airlines flying from London Gatwick Airport to Seattle

Compare and see reviews for airlines that fly from London Gatwick Airport to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £351	Free Cancellation	Rating 7.1 602 reviews		Search Icelandair flights

Fife

SeaTac

Tukwila

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from London.

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

Flights from London to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential London to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from London and alert you when they change.