Cheap flights from London Gatwick Airport to Seattle from £400
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Gatwick to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.
Round-trip from | £476 |
---|---|
One-way from | £400 |
Popular in | August |
Cheapest in | March |
Average price | £666 |
Find flight deals from Gatwick to Seattle
Cheapest flights from Gatwick to SeattleExplore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Gatwick 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, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
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
Sat 6/9
18:40-18:36
2 stops31h 56m
Seattle/Tacoma Intl
Tue 21/10
13:00-17:50
2 stops20h 50m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Mon 25/8
12:10-21:59
1 stop17h 49m
Seattle/Tacoma Intl
Tue 9/9
11:30-09:35
1 stop14h 05m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Tue 5/8
15:40-20:40
1 stop13h 00m
Seattle/Tacoma Intl
Wed 3/9
15:45-11:45
1 stop12h 00m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Mon 25/8
10:45-10:54
1 stop32h 09m
Seattle/Tacoma Intl
Mon 1/9
07:00-10:50
1 stop19h 50m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Thu 4/12
12:30-12:38
2 stops32h 08m
Seattle/Tacoma Intl
Mon 8/12
23:03-09:00
2 stops49h 57m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Sun 24/8
10:55-14:46
2 stops35h 51m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Sat 16/8
10:45-20:28
2 stops41h 43m
LondonSeattle
LGW - SEA
LGWSEA
London Gatwick
Wed 8/10
15:40-20:40
1 stop13h 00m
Best time to book a flight from Gatwick to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London Gatwick Airport to Seattle
How far ahead should I book a flight from London Gatwick Airport to Seattle?
Use this chart to determine the optimal time to book a return flight from Gatwick to Seattle. Price data was last updated on 27 June 2025.
The price you pay for your flight from London Gatwick Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Gatwick Airport to Seattle?
Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LGW to SEA?
Find hourly flight availability from Gatwick to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from London Gatwick Airport to Seattle by exploring options for tickets at midday.
How much does it cost for a return flight from London Gatwick Airport to Seattle?
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 11 July 2025.
Get a feel of what it's like to fly with SWISS, JetBlue, andAmerican Airlines from London Gatwick Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Overall
Food
Crew
Entertainment
Boarding
Comfort
Reviews
Kristina,Nov 2024
ZRH - BER
Related info for your journey
Find useful and relevant information for your journey from Gatwick to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near London Gatwick Airport?
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Alternative routes for Gatwick to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Gatwick to Seattle
Discover the top 2 airlines that operate flights from Gatwick to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Gatwick to Seattle?
When you search for this flight from Gatwick to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Gatwick to Seattle?
Cheapflights simply makes it quick and affordable to book flights from Gatwick to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Gatwick to Seattle with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Seattle, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Gatwick to Seattle become cheaper?
Of course! You can now track prices for flights from Gatwick to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.