LGW - SEA

£309 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 28/4. 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, 0 bags

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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Everything you should know

Cheapest return fare
£422
Multiple Airlines
Sun 5/4Sun 19/4
LGW - SEA • 2 stops
Cheapest one-way flight
£309
Multiple Airlines
Tue 28/4
LGW - SEA • 3 stops
Direct flights
Not available
There are currently no direct flights between Gatwick and Seattle. You’ll need at least 1 connection.
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We hope you love your trip to Seattle!
Flight Deals
Useful Info
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

Sun, 5 Apr - Sun, 19 Apr
Multiple Airlines Logo
10:15 - 20:40
LGW
-
SEA
18h 25m
2 stops
Multiple Airlines Logo
15:40 - 19:15
SEA
-
LGW
19h 35m
2 stops
£422Multiple Airlines
Thu, 5 Mar - Tue, 10 Mar
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
15:35 - 10:55
SEA
-
LGW
12h 20m
1 stop
£424Icelandair
Tue, 14 Apr - Wed, 6 May
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£424Icelandair
Wed, 15 Apr - Wed, 29 Apr
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£426Icelandair
Mon, 13 Apr - Tue, 28 Apr
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£427Icelandair
Wed, 4 Mar - Tue, 17 Mar
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
15:35 - 10:55
SEA
-
LGW
12h 20m
1 stop
£427Icelandair
Thu, 5 Mar - Tue, 10 Mar
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
15:35 - 10:55
SEA
-
LGW
12h 20m
1 stop
£428Icelandair
Thu, 5 Mar - Tue, 10 Mar
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
15:35 - 10:55
SEA
-
LGW
12h 20m
1 stop
£430Icelandair
Mon, 13 Apr - Mon, 27 Apr
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£432Icelandair
Wed, 15 Apr - Thu, 23 Apr
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£433Icelandair
Useful Info

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

Cheapest flight£309
Most popular time to fly (29% 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 £309 for a one-way ticket and £422 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.

  • 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 airline 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.
7.1
IcelandairOverall score based on 615 reviews
8.0Crew
7.2Boarding
7.0Entertainment
7.0Comfort
6.2Food
Airline reviews

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

4.0 OkayAnonymous, Feb 2026
LAX - SEA
Read more Icelandair reviews

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

Iceland air transfer was bad. They lost my luggage and I just received it 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

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

Information on your arrival and departure airports