LGW - SEA

£430 Find Cheap Flights from London Gatwick Airport to Seattle – Compare and Save

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 23/8. 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
£452
Typical prices: £447-£539
Icelandair
Tue 8/9Wed 30/9
LGW - SEA • 1 stop
Cheapest one-way flight
£430
Icelandair
Sun 23/8
LGW - SEA • 1 stop
Top airlines
Icelandair
Cheapest • from £452 (return)
Icelandair
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Gatwick and Seattle. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 100% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
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, 8 Sep - Wed, 30 Sep
Icelandair Logo
13:00 - 17:55
LGW
-
SEA
12h 55m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£452Icelandair
Sat, 29 Aug - Sun, 6 Sep
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£458Icelandair
Tue, 22 Sep - Tue, 6 Oct
Condor Logo
10:20 - 15:40
LGW
-
SEA
13h 20m
1 stop
Condor Logo
18:05 - 18:50
SEA
-
LGW
16h 45m
1 stop
£458Condor
Tue, 1 Sep - Thu, 10 Sep
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£460Icelandair
Sat, 26 Sep - Thu, 22 Oct
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£461Icelandair
Sat, 5 Sep - Sat, 19 Sep
Icelandair Logo
15:40 - 11:45
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£463Icelandair
Fri, 4 Sep - Sun, 6 Sep
Icelandair Logo
15:40 - 17:55
LGW
-
SEA
34h 15m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£464Icelandair
Thu, 1 Oct - Sun, 11 Oct
Condor Logo
10:20 - 16:00
LGW
-
SEA
13h 40m
1 stop
Condor Logo
17:40 - 18:50
SEA
-
LGW
17h 10m
1 stop
£464Condor
Wed, 9 Sep - Wed, 23 Sep
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m
1 stop
£465Icelandair
Wed, 16 Sep - Fri, 9 Oct
Condor Logo
10:20 - 15:40
LGW
-
SEA
13h 20m
1 stop
Condor Logo
18:00 - 18:50
SEA
-
LGW
16h 50m
1 stop
£469Condor
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?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London Gatwick Airport to Seattle departing in September.

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 February, where tickets cost £0 (return) on average. On the other hand, the most expensive months are May and August, where the average cost of round-trip tickets is £756 and £702 respectively.

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

Cheapest flight£430
Most popular time to fly (3% 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 £430 for a one-way ticket and £452 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.
7.0
IcelandairOverall score based on 694 reviews
6.9Comfort
7.2Boarding
8.0Crew
6.9Entertainment
6.2Food
Airline reviews

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

10.0 ExcellentAnonymous, Apr 2026
KEF - SEA
Read more Icelandair reviews

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

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.

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.

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

One of the worst airlines I ever flew. Boarding is a disaster, they are always late, the planes are overly crowded. Everyone on my flight lost their connection because they were 2h late. Reykjavik is also not the best airport out there.

Flight was delayed. They did a terrible job rebooking me. Agent on the ground was useless. The partner airline who ran the plane was able to help me but Iceland air was useless

did internet check in but still had to get checked in at the counter and this was not the first time. Bummer!

Paying $75 for my bag is disgusting. Got off ground late so I missed my connections. Kept us waiting for passengers in the cold. Will not use them again.

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

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

Information on your arrival and departure airports

London Gatwick Airport (LGW)
Seattle (SEA)