LGW - SEA

£374 Find Cheap Flights from London Gatwick Airport to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Gatwick to Seattle departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Gatwick to Seattle (LGW-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Gatwick to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Gatwick to Seattle

Tue, 28 Oct - Sun, 2 Nov
Icelandair Logo
11:55 - 18:00LGW-SEA
13h 05m1 stop
Icelandair Logo
14:35 - 10:55SEA-LGW
12h 20m1 stop
£442Icelandair
Find Deal
Mon, 3 Nov - Sun, 16 Nov
Multiple Airlines Logo
17:20 - 10:35LGW-SEA
49h 15m2 stops
Multiple Airlines Logo
21:34 - 06:00SEA-LGW
24h 26m1 stop
£447Multiple Airlines
Find Deal
Tue, 10 Mar - Tue, 17 Mar
SWISS Logo
18:40 - 22:29LGW-SEA
34h 49m2 stops
SWISS Logo
14:47 - 17:50SEA-LGW
20h 03m2 stops
£448SWISS
Find Deal
Mon, 3 Nov - Sun, 16 Nov
SWISS Logo
18:40 - 22:45LGW-SEA
36h 05m2 stops
SWISS Logo
14:40 - 17:50SEA-LGW
19h 10m2 stops
£449SWISS
Find Deal
Tue, 10 Mar - Tue, 17 Mar
SWISS Logo
18:40 - 22:29LGW-SEA
34h 49m2 stops
SWISS Logo
17:00 - 17:50SEA-LGW
17h 50m2 stops
£450SWISS
Find Deal
Thu, 30 Oct - Wed, 12 Nov
Icelandair Logo
11:55 - 18:00LGW-SEA
13h 05m1 stop
Icelandair Logo
14:35 - 10:55SEA-LGW
12h 20m1 stop
£451Icelandair
Find Deal
Tue, 28 Oct - Tue, 11 Nov
Icelandair Logo
11:55 - 18:00LGW-SEA
13h 05m1 stop
Icelandair Logo
14:35 - 10:55SEA-LGW
12h 20m1 stop
£452Icelandair
Find Deal
Thu, 27 Nov - Tue, 2 Dec
Icelandair Logo
11:55 - 17:00LGW-SEA
13h 05m1 stop
Icelandair Logo
14:35 - 10:55SEA-LGW
12h 20m1 stop
£454Icelandair
Find Deal
Sat, 1 Nov - Tue, 31 Mar
Icelandair Logo
11:55 - 18:00LGW-SEA
13h 05m1 stop
Icelandair Logo
19:00 - 14:40SEA-LGW
11h 40m1 stop
£454Icelandair
Find Deal
Sat, 27 Sep - Thu, 16 Oct
Multiple Airlines Logo
09:50 - 23:59LGW-SEA
22h 09m1 stop
Multiple Airlines Logo
13:02 - 10:55SEA-LGW
37h 53m2 stops
£456Multiple Airlines
Find Deal

Everything you should know

Top airlines
Icelandair
Cheapest • from £442 (return)
Virgin Atlantic
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 25% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£442
Typical prices: £407-559
Icelandair
Tue 28/10Sun 2/11
LGW - SEA • 1 stop
Cheapest one-way flight
£374
Multiple Airlines
Thu 2/10
LGW - SEA • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
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Booking Insights

KAYAK's insights & trends for Gatwick to Seattle flights

Get data-powered insights and trends into flights from Gatwick to Seattle to help you find the cheapest flights, the best time to fly and much more.

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Gatwick Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Gatwick Airport to Seattle is March, where tickets cost £394 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is £715 and £691 respectively.

Good to know - Cheap tickets from London Gatwick Airport to Seattle

Low seasonOctober
Cheapest flight£374
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (31% more expensive on average)
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Gatwick Airport to Seattle flights

  • What is the cheapest flight from London Gatwick Airport to Seattle?

    In the last 3 days, the lowest price for a flight from London Gatwick Airport to Seattle was £510 for a one-way ticket and £603 for a return.

  • Which aircraft models fly most regularly from London Gatwick Airport to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Gatwick Airport to Seattle?

    oneworld, and Star Alliance are the airline alliances operating flights between London Gatwick Airport and Seattle, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from London to Seattle, Virgin Atlantic or Icelandair?

    The two airlines most popular with KAYAK users for flights from London to Seattle are Virgin Atlantic and Icelandair. With an average price for the route of £482 and an overall rating of 7.4, Virgin Atlantic is the most popular choice. Icelandair is also a great choice for the route, with an average price of £516 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from London Gatwick Airport to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Gatwick Airport to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Gatwick Airport to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from London Gatwick Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Gatwick Airport to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to London Gatwick Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Gatwick Airport to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from London Gatwick Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Gatwick to Seattle

 
See real verified KAYAK customer reviews for airlines flying from London to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Gatwick to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Virgin AtlanticOverall score based on 664 reviews
7.5Entertainment
6.9Food
7.3Comfort
8.1Crew
7.7Boarding
Airline reviews

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

6.0 GoodShreyas, Sept 2025LHR - MCO
Read more Virgin Atlantic reviews

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Everything you need to know for your flight from Gatwick to Seattle

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