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Cheap flights from London Gatwick Airport to Seattle from £398

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 14/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
13:00 - 11:45
LGW
-
SEA
30h 45m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£520Icelandair
Sun, 28 Jun - Thu, 16 Jul
Icelandair Logo
13:00 - 17:55
LGW
-
SEA
12h 55m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£521Icelandair
Thu, 25 Jun - Thu, 9 Jul
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£522Icelandair
Fri, 26 Jun - Wed, 15 Jul
Icelandair Logo
13:00 - 11:45
LGW
-
SEA
30h 45m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£522Icelandair
Sun, 28 Jun - Wed, 15 Jul
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
23:25 - 11:45
SEA
-
LGW
28h 20m
1 stop
£525Icelandair
Sun, 31 May - Tue, 16 Jun
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£528Icelandair
Sun, 20 Sep - Wed, 30 Sep
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
23:25 - 14:40
SEA
-
LGW
31h 15m
1 stop
£533Icelandair
Mon, 1 Jun - Mon, 15 Jun
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£534Icelandair
Sun, 20 Sep - Sun, 27 Sep
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£534Icelandair
Mon, 7 Sep - Wed, 16 Sep
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£535Icelandair
Mon, 7 Sep - Wed, 16 Sep

Condor flights from London Gatwick Airport to Seattle

Our best Condor deals on London Gatwick Airport to Seattle flight tickets
Condor
20 May
LGW10:20London Gatwick
13h 20m
1 stop
SEA15:40Seattle/Tacoma Intl
1 Jun
SEA18:10Seattle/Tacoma Intl
16h 40m
1 stop
LGW18:50London Gatwick
£555
Condor
6 May
LGW10:20London Gatwick
13h 20m
1 stop
SEA15:40Seattle/Tacoma Intl
14 May
SEA18:05Seattle/Tacoma Intl
16h 45m
1 stop
LGW18:50London Gatwick
£755
Condor
7 May
LGW10:20London Gatwick
13h 40m
1 stop
SEA16:00Seattle/Tacoma Intl
15 May
SEA18:00Seattle/Tacoma Intl
16h 50m
1 stop
LGW18:50London Gatwick
£757

Icelandair flights from London Gatwick Airport to Seattle

Our best Icelandair deals on London Gatwick Airport to Seattle flight tickets
Icelandair
28 Jun
LGW13:00London Gatwick
30h 45m
1 stop
SEA11:45Seattle/Tacoma Intl
16 Jul
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£520
Icelandair
25 Jun
LGW13:00London Gatwick
12h 55m
1 stop
SEA17:55Seattle/Tacoma Intl
9 Jul
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£521
Icelandair
26 Jun
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
15 Jul
SEA19:00Seattle/Tacoma Intl
11h 40m
1 stop
LGW14:40London Gatwick
£522

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 1 May 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

Sun 28/6

13:00-11:45

1 stop30h 45m

Seattle/Tacoma Intl

Thu 16/7

19:00-14:40

1 stop11h 40m

£520
Fastest return journey

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 25/6

13:00-17:55

1 stop12h 55m

Seattle/Tacoma Intl

Thu 9/7

19:00-14:40

1 stop11h 40m

£521

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 26/6

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Wed 15/7

19:00-14:40

1 stop11h 40m

£522

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 28/6

13:00-11:45

1 stop30h 45m

Seattle/Tacoma Intl

Wed 15/7

19:00-14:40

1 stop11h 40m

£522

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 31/5

15:40-11:45

1 stop28h 05m

Seattle/Tacoma Intl

Tue 16/6

23:25-11:45

1 stop28h 20m

£525

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 20/9

15:40-17:55

1 stop34h 15m

Seattle/Tacoma Intl

Wed 30/9

19:00-14:40

1 stop11h 40m

£528

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 1/6

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 15/6

23:25-14:40

1 stop31h 15m

£533

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 20/9

15:40-17:55

1 stop34h 15m

Seattle/Tacoma Intl

Sun 27/9

15:40-14:40

1 stop15h 00m

£534

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 7/9

15:40-11:45

1 stop28h 05m

Seattle/Tacoma Intl

Wed 16/9

15:40-14:40

1 stop15h 00m

£534

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 7/9

15:40-11:45

1 stop28h 05m

Seattle/Tacoma Intl

Wed 16/9

19:00-14:40

1 stop11h 40m

£535

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 £391.

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 £597. 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 £668.

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 £602. 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 £631.

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 £375Free CancellationRating
7.0
646 reviews
Search Icelandair flights

Travelling to a place near Seattle?

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