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Cheap flights from London Gatwick Airport to Seattle from £424

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Seattle departing on 17/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from London Gatwick Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£483Icelandair
Mon, 31 Aug - Tue, 8 Sep
Delta Logo
10:25 - 17:27
LGW
-
SEA
15h 02m
1 stop
Delta Logo
18:35 - 16:00
SEA
-
LGW
13h 25m
1 stop
£485Delta
Sat, 4 Jul - Mon, 13 Jul
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£490Icelandair
Sun, 4 Oct - Fri, 9 Oct
Icelandair Logo
13:00 - 17:55
LGW
-
SEA
12h 55m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£492Icelandair
Sun, 30 Aug - Thu, 17 Sep
Virgin Atlantic Logo
17:00 - 10:13
LGW
-
SEA
25h 13m
2 stops
Virgin Atlantic Logo
13:30 - 09:25
SEA
-
LGW
11h 55m
1 stop
£492Virgin Atlantic
Tue, 1 Sep - Tue, 8 Sep
Virgin Atlantic Logo
17:00 - 18:40
LGW
-
SEA
33h 40m
2 stops
Virgin Atlantic Logo
13:30 - 16:00
SEA
-
LGW
18h 30m
1 stop
£495Virgin Atlantic
Wed, 1 Jul - Mon, 13 Jul
Multiple Airlines Logo
06:00 - 21:07
LGW
-
SEA
23h 07m
3 stops
Multiple Airlines Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£498Multiple Airlines
Tue, 1 Sep - Wed, 30 Sep
Multiple Airlines Logo
06:00 - 21:07
LGW
-
SEA
23h 07m
3 stops
Multiple Airlines Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£498Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
Virgin Atlantic Logo
17:00 - 11:15
LGW
-
SEA
26h 15m
1 stop
Virgin Atlantic Logo
13:30 - 09:40
SEA
-
LGW
12h 10m
1 stop
£500Virgin Atlantic
Tue, 7 Jul - Mon, 13 Jul
Virgin Atlantic Logo
17:00 - 11:15
LGW
-
SEA
26h 15m
1 stop
Virgin Atlantic Logo
13:30 - 09:40
SEA
-
LGW
12h 10m
1 stop
£501Virgin Atlantic
Sat, 4 Jul - Mon, 13 Jul

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Icelandair flights from London Gatwick Airport to Seattle

Our best Icelandair deals on London Gatwick Airport to Seattle flight tickets
Icelandair
31 Aug
LGW15:40London Gatwick
28h 05m
1 stop
SEA11:45Seattle/Tacoma Intl
8 Sept
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£483
Icelandair
4 Oct
LGW15:40London Gatwick
34h 15m
1 stop
SEA17:55Seattle/Tacoma Intl
9 Oct
SEA15:40Seattle/Tacoma Intl
15h 00m
1 stop
LGW14:40London Gatwick
£490
Icelandair
30 Aug
LGW13:00London Gatwick
12h 55m
1 stop
SEA17:55Seattle/Tacoma Intl
17 Sept
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£492

Virgin Atlantic flights from London Gatwick Airport to Seattle

Our best Virgin Atlantic deals on London Gatwick Airport to Seattle flight tickets
Virgin Atlantic
1 Sept
LGW17:00London Gatwick
25h 13m
2 stops
SEA10:13Seattle/Tacoma Intl
8 Sept
SEA13:30Seattle/Tacoma Intl
11h 55m
1 stop
LGW09:25London Gatwick
£492
Virgin Atlantic
1 Jul
LGW17:00London Gatwick
33h 40m
2 stops
SEA18:40Seattle/Tacoma Intl
13 Jul
SEA13:30Seattle/Tacoma Intl
18h 30m
1 stop
LGW16:00London Gatwick
£495
Virgin Atlantic
7 Jul
LGW17:00London Gatwick
26h 15m
1 stop
SEA11:15Seattle/Tacoma Intl
13 Jul
SEA13:30Seattle/Tacoma Intl
12h 10m
1 stop
LGW09:40London Gatwick
£500

momondo Fare Finder

 
Customise your flight search to find flights from London Gatwick Airport to Seattle 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, momondo users made 279,928 searches. Data last updated 20 June 2026.
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

Cheapest return flight

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 31/8

15:40-11:45

1 stop28h 05m

Seattle/Tacoma Intl

Tue 8/9

19:00-14:40

1 stop11h 40m

£483

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/7

10:25-17:27

1 stop15h 02m

Seattle/Tacoma Intl

Mon 13/7

18:35-16:00

1 stop13h 25m

£485

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 4/10

15:40-17:55

1 stop34h 15m

Seattle/Tacoma Intl

Fri 9/10

15:40-14:40

1 stop15h 00m

£490
Fastest return journey

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 30/8

13:00-17:55

1 stop12h 55m

Seattle/Tacoma Intl

Thu 17/9

19:00-14:40

1 stop11h 40m

£492

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 1/9

17:00-10:13

2 stops25h 13m

Seattle/Tacoma Intl

Tue 8/9

13:30-09:25

1 stop11h 55m

£492

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 1/7

17:00-18:40

2 stops33h 40m

Seattle/Tacoma Intl

Mon 13/7

13:30-16:00

1 stop18h 30m

£495

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 1/9

06:00-21:07

3 stops23h 07m

Seattle/Tacoma Intl

Wed 30/9

19:00-14:40

1 stop11h 40m

£498

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 1/9

06:00-21:07

3 stops23h 07m

Seattle/Tacoma Intl

Sat 12/9

19:00-14:40

1 stop11h 40m

£498

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 7/7

17:00-11:15

1 stop26h 15m

Seattle/Tacoma Intl

Mon 13/7

13:30-09:40

1 stop12h 10m

£500

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/7

17:00-11:15

1 stop26h 15m

Seattle/Tacoma Intl

Mon 13/7

13:30-09:40

1 stop12h 10m

£501

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

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 typical price of a round-trip flight between London Gatwick Airport and Seattle?

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from London Gatwick Airport is in February. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. The month of January 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, Thursday is the cheapest day to fly to Seattle from London Gatwick Airport. The lowest ticket price found for a Thursday departure recently was £617. 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 £697.

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 £618. 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 £652.

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

Frequently asked questions about flying from London Gatwick Airport to Seattle

  • 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?

  • 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?

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
IcelandairPriceFrom £400Free CancellationRating
7.0
680 reviews
Search Icelandair flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Kirkland
Fife
Ashford
Tacoma
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.

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