United Kingdom
GBP

LGW - SEA

£391 Find Cheap Flights from London Gatwick Airport to Seattle – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£431
Typical prices: £417-£572
Icelandair
Sun 18/11Thu 22/3
LGW - SEA • 1 stop
Cheapest one-way flight
£391
Typical prices: £385-£544
Multiple Airlines
Sun 4/2
LGW - SEA • 2 stops
Direct flights
Not available
There are currently no direct flights between London Gatwick Airport and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
7 weeks
in advance
Our data shows that travellers who book at least 7 weeks in advance save around 35% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 27% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Zurich (ZRH)
Cheapest • Avg £457 (return)
Reykjavik Keflavik Intl (KEF)
Shortest trip • 13h 29m (one-way)
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Insights
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We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Gatwick to Seattle (LGW-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Gatwick to Seattle

Wed, 18 Nov - Mon, 22 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£431Icelandair
Wed, 18 Nov - Tue, 23 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£431Icelandair
Wed, 18 Nov - Wed, 24 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£431Icelandair
Wed, 18 Nov - Mon, 22 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£432Icelandair
Wed, 18 Nov - Sun, 21 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£432Icelandair
Wed, 18 Nov - Tue, 23 Mar
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£432Icelandair
Mon, 2 Nov - Tue, 10 Nov
Icelandair Logo
11:55 - 17:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
14:35 - 10:55SEA  Seattle/Tacoma Intl-LGW London Gatwick
12h 20m1 stop Reykjavik Keflavik Intl
£435Icelandair
Tue, 6 Apr - Wed, 21 Apr
Icelandair Logo
15:40 - 17:55LGW  London Gatwick-SEA Seattle/Tacoma Intl
34h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:00 - 14:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 40m1 stop Reykjavik Keflavik Intl
£439Icelandair
Mon, 15 Feb - Mon, 22 Feb
Condor Logo
10:25 - 15:55LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 30m1 stop Frankfurt am Main
Condor Logo
17:50 - 19:25SEA  Seattle/Tacoma Intl-LGW London Gatwick
17h 35m1 stop Frankfurt am Main
£440Condor
Thu, 4 Feb - Thu, 18 Feb
Condor Logo
10:25 - 15:55LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 30m1 stop Frankfurt am Main
Condor Logo
17:50 - 15:00SEA  Seattle/Tacoma Intl-LGW London Gatwick
13h 10m1 stop Frankfurt am Main
£441Condor
Booking Insights

Price, demand, and travel trends for London Gatwick Airport to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a return flight from London Gatwick Airport to Seattle?

Return flights from London Gatwick Airport to Seattle typically range from £417 to £572. The lowest price found in the past 5 days was £431 on Icelandair.

What's the cheapest day of the week to fly from London Gatwick Airport to Seattle?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from London Gatwick Airport to Seattle. It’s 7% cheaper than the average day, while Sunday is the most expensive, with prices 36% higher.

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

•February is the cheapest month to fly from London Gatwick Airport to Seattle at £368 return.
•October (£609) and July (£581) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 65% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from London Gatwick Airport to Seattle the cheapest?

Flights from London Gatwick Airport to Seattle are cheapest 7 weeks before departure. Booking in this window typically costs about 35% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for London Gatwick Airport to Seattle flights

Low season

January

Cheapest flight

£391
Beat the crowds with an average 47% drop in traveller numbers.
The most popular month to fly with an average 96% increase in traveller numbers.
One-way flight from London Gatwick Airport to Seattle

When to book flights from Gatwick to Seattle

Are your dates flexible? Find out the best times to travel from Gatwick to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your London Gatwick Airport to Seattle flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from London Gatwick Airport to Seattle?

    Three cabin classes are available on flights from London Gatwick Airport to Seattle:

    • Economy class
    • Premium Economy Class
    • First Class

  • How long is a flight from London Gatwick Airport to Seattle?

    A direct flight from London Gatwick Airport to Seattle takes 00m, covering 4,807 miles.

  • Do I need a passport to fly from London Gatwick Airport to Seattle?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a London Gatwick Airport to Seattle flight?

    Return flights from London Gatwick Airport to Seattle range from £417 to £572, with an average of £502 over the past 12 months. Anything below £417 counts as a good deal.

  • How expensive are last-minute London Gatwick Airport to Seattle flights?

    Last-minute fares on this route (booked within two weeks of departure) run 19% above the £502 route average. Book 7 weeks before departure for the lowest fares.

  • How are flight prices from London Gatwick Airport to Seattle looking right now?

    One-way fares from London Gatwick Airport to Seattle are currently lower than usual. Average one-way flight prices are about £393, which is 14% below the typical average for this route.

  • Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £3 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Hertz

  • Which airports can I use when flying from London Gatwick Airport to Seattle?

    Flights from London Gatwick Airport to Seattle usually depart from London Gatwick (LGW) and arrive at Seattle/Tacoma Intl (SEA).

  • Which airports do connecting flights from London Gatwick Airport to Seattle pass through?

    One-stop flights from London Gatwick Airport to Seattle most commonly connect through:

    • Reykjavik Keflavik Intl (KEF) – 89% of one-stop connections
    • Frankfurt am Main (FRA) – 8% of one-stop connections
    • Paris Charles de Gaulle (CDG) – 1% of one-stop connections
    • Zurich (ZRH) – 1% of one-stop connections

  • Can I save money by using flexible dates for flights from London Gatwick Airport to Seattle?

    Yes. Flexible dates can save you up to 32% on flights from London Gatwick Airport to Seattle. Wednesday is the cheapest departure day at £466 return on average, while Sunday is the most expensive at £683, a difference of £216.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from London Gatwick Airport to Seattle?

    Flying via Zurich (ZRH) gives the shortest average 1-stop total travel time of 13h 12m, compared to 13h 29m via Reykjavik Keflavik Intl (KEF) and 13h 57m via Frankfurt am Main (FRA).

  • What is the time difference between London Gatwick Airport and Seattle?

    Seattle is 8 hours behind London Gatwick Airport (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are The Westin Seattle, Seattle Center, and Seattle Marriott Waterfront. These are among the most viewed places in Seattle on KAYAK.

Your guide to booking London Gatwick Airport to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average £466, about £216 less than Sunday fares (32% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 35% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London Gatwick Airport to Seattle trip for February. Fares historically average £368 return in that month – typically £240 less than the most expensive month, which is October (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.

    • Coast Gateway Hotel
    • Seattle Airport Marriott
    • Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Gatwick to Seattle

Complete your trip to Seattle with a hotel stay or car hire

Car hire in Seattle
Hotels in Seattle
Holidays in Seattle