LGW - SEA

£377 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
£451
Typical prices: £409-£545
Air France
Tue 25/9Fri 28/9
LGW - SEA • 1 stop
Cheapest one-way flight
£377
Typical prices: £371-£530
Multiple Airlines
Mon 8/10
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
24 weeks
in advance
Our data shows that travellers who book at least 24 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 23% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Zurich (ZRH)
Cheapest • Avg £447 (return)
Reykjavik Keflavik Intl (KEF)
Shortest trip • 13h 27m (one-way)
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Insights
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We hope you enjoy your trip to Seattle!
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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

Fri, 25 Sep - Mon, 28 Sep
Air France Logo
10:25 - 17:48LGW  London Gatwick-SEA Seattle/Tacoma Intl
15h 23m1 stop Paris Charles de Gaulle
Air France Logo
18:45 - 16:00SEA  Seattle/Tacoma Intl-LGW London Gatwick
13h 15m1 stop Paris Charles de Gaulle
£451Air France
Fri, 6 Nov - Tue, 17 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
£452Icelandair
Thu, 17 Dec - Sat, 9 Jan
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
£457Icelandair
Thu, 15 Oct - Tue, 27 Oct
Icelandair Logo
15:40 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
15:35 - 10:55SEA  Seattle/Tacoma Intl-LGW London Gatwick
12h 20m1 stop Reykjavik Keflavik Intl
£458Icelandair
Thu, 15 Oct - Wed, 28 Oct
Icelandair Logo
15:40 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
15:35 - 10:55SEA  Seattle/Tacoma Intl-LGW London Gatwick
12h 20m1 stop Reykjavik Keflavik Intl
£458Icelandair
Tue, 13 Oct - Sat, 24 Oct
Icelandair Logo
15:40 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
19:10 - 13:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
11h 30m1 stop Reykjavik Keflavik Intl
£458Icelandair
Thu, 15 Oct - Mon, 26 Oct
Icelandair Logo
15:40 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
13h 00m1 stop Reykjavik Keflavik Intl
Icelandair Logo
15:35 - 10:55SEA  Seattle/Tacoma Intl-LGW London Gatwick
12h 20m1 stop Reykjavik Keflavik Intl
£458Icelandair
Mon, 15 Feb - Thu, 18 Feb
Virgin Atlantic Logo
10:00 - 22:04LGW  London Gatwick-SEA Seattle/Tacoma Intl
20h 04m2 stops Paris Charles de Gaulle Boston Logan Intl
Virgin Atlantic Logo
16:05 - 15:45SEA  Seattle/Tacoma Intl-LGW London Gatwick
15h 40m1 stop Paris Charles de Gaulle
£459Virgin Atlantic
Mon, 15 Feb - Thu, 18 Feb
Virgin Atlantic Logo
10:00 - 22:04LGW  London Gatwick-SEA Seattle/Tacoma Intl
20h 04m2 stops Paris Charles de Gaulle Boston Logan Intl
Virgin Atlantic Logo
16:05 - 15:45SEA  Seattle/Tacoma Intl-LGW London Gatwick
15h 40m1 stop Paris Charles de Gaulle
£459Virgin Atlantic
Wed, 4 Nov - Thu, 19 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
£464Icelandair
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 from London Gatwick Airport to Seattle with more confidence.

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

Return flights from London Gatwick Airport to Seattle start at £451. Prices are typical for this route right now, with typical return fares ranging from £409 to £545. The lowest price found in the past 5 days was £451 on Air France.

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

Monday is the cheapest day of the week to fly from London Gatwick Airport to Seattle and is 7% cheaper than the average day. Sunday is the most expensive day with flight prices 30% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from London Gatwick Airport to Seattle at £369 return.
  • July (£578) and June (£521) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 56% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from London Gatwick Airport to Seattle are cheapest 24 weeks before departure. Booking in this window typically costs about 33% 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

£377
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (3% more expensive on average)
Flights 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 route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

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

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

    • Economy class
    • Business Class

  • 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) – 92% of one-stop connections
    • Frankfurt am Main (FRA) – 6% of one-stop connections
    • Paris Charles de Gaulle (CDG) – 1% of one-stop connections
    • Zurich (ZRH) – 1% of one-stop connections

    Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 29% on the London Gatwick Airport to Seattle route. Monday is the cheapest departure day at £448 return on average, while Sunday is the most expensive at £626, a difference of £178. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pier 66, The Westin Seattle, and Seattle Center. These are among the most viewed places in Seattle on KAYAK.

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

    Last-minute fares on this route (booked within 2 weeks of departure) run 18% above the route average of £480. Book 24 weeks before departure for the lowest fares.

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

    A direct flight from London Gatwick Airport to Seattle takes 0h 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 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 £378, which is 15% below the typical average for this route.

  • 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 27m via Reykjavik Keflavik Intl (KEF) and 14h 09m 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.

  • 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
    · Dollar

  • 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 £409 to £545, with an average of £480 over the past 12 months. Anything below £409 counts as a good deal.

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 Monday departure instead of Sunday. On this route, Monday flights average £448 – about £178 less than Sunday (28% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 24 weeks before you fly. On this route, that window historically saves about 33% 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 January. Fares historically average £369 return in that month – typically £209 less than the most expensive month, which is July (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.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - 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