LGW - SEA

£421 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 20/9. 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
£518
Typical prices: £530-£431
Icelandair
Fri 25/9Tue 9/3
LGW - SEA • 1 stop
Cheapest one-way flight
£421
Multiple Airlines
Sun 20/9
LGW - SEA • 1 stop
Top airlines
Icelandair
Cheapest • from £518 (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

Fri, 25 Sep - Tue, 9 Mar
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
14:35 - 10:55
SEA
-
LGW
12h 20m
1 stop
£518Icelandair
Mon, 7 Sep - Wed, 7 Oct
Virgin Atlantic Logo
10:25 - 23:57
LGW
-
SEA
21h 32m
2 stops
Virgin Atlantic Logo
18:45 - 16:00
SEA
-
LGW
13h 15m
1 stop
£519Virgin Atlantic
Wed, 8 Jul - Wed, 15 Jul
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
19:00 - 14:40
SEA
-
LGW
11h 40m
1 stop
£520Icelandair
Tue, 7 Jul - Tue, 14 Jul
Icelandair Logo
13:00 - 17:55
LGW
-
SEA
12h 55m
1 stop
Icelandair Logo
19:00 - 11:45
SEA
-
LGW
32h 45m
1 stop
£521Icelandair
Mon, 14 Sep - Tue, 22 Sep
Virgin Atlantic Logo
17:00 - 11:15
LGW
-
SEA
26h 15m
1 stop
Virgin Atlantic Logo
13:30 - 09:25
SEA
-
LGW
11h 55m
1 stop
£522Virgin Atlantic
Wed, 22 Jul - Thu, 6 Aug
Virgin Atlantic Logo
17:00 - 11:15
LGW
-
SEA
26h 15m
1 stop
Virgin Atlantic Logo
13:30 - 09:25
SEA
-
LGW
11h 55m
1 stop
£523Virgin Atlantic
Mon, 24 Aug - Sat, 5 Sep
Delta Logo
10:25 - 17:34
LGW
-
SEA
15h 09m
1 stop
Delta Logo
18:45 - 16:00
SEA
-
LGW
13h 15m
1 stop
£524Delta
Tue, 14 Jul - Wed, 22 Jul
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
15:40 - 11:45
SEA
-
LGW
12h 05m
1 stop
£526Icelandair
Thu, 16 Jul - Tue, 4 Aug
Delta Logo
10:25 - 17:27
LGW
-
SEA
15h 02m
1 stop
Delta Logo
18:40 - 16:00
SEA
-
LGW
13h 20m
1 stop
£530Delta
Thu, 25 Jun - Sat, 11 Jul
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
15:40 - 11:45
SEA
-
LGW
12h 05m
1 stop
£531Icelandair
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 August and July, where the average cost of round-trip tickets is £691 and £655 respectively.

Find deals

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

Cheapest flight£421
Most popular time to fly (16% 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 £421 for a one-way ticket and £518 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 670 reviews
6.2Food
7.2Boarding
6.9Comfort
8.0Crew
6.9Entertainment
Airline reviews

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

8.0 ExcellentAnonymous, Jun 2026
KEF - IAD
Read more Icelandair reviews

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

At least one soda free, felt like I was nickeled to death.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

Was a bit surprised that Icelandair flies a domestically configured 757s on long-haul flights to Iceland (no lie-flat seats in business class).

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

I’m considering never flying with Iceland Air again. The seats in economy are torture. Now you only get water, coffee and tea for free- really? No food, not a single peanut. The passport line was insane, everyone was worried about catching their connecting flight. This was the third time I’ve barely made my connection, had to run. It can’t be that my choice is to use the bathroom (during the 50 minutes between flights) or make my flight. SO stressful! Ugh.

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)