LGW - SEA

$561 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 12/16. 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
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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 round-trip 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 round-trip flight deals from Gatwick to Seattle

Wed, Dec 3 - Thu, Dec 11
Icelandair Logo
11:55 am - 5:00 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
2:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
$602Icelandair
Find Deal
Tue, Nov 25 - Tue, Dec 2
Icelandair Logo
11:55 am - 5:00 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
2:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
$605Icelandair
Find Deal
Tue, Nov 18 - Mon, Nov 24
Icelandair Logo
11:55 am - 5:00 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
2:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
$606Icelandair
Find Deal
Wed, Apr 8 - Wed, Apr 15
Icelandair Logo
3:40 pm - 8:45 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
3:45 pm - 2:40 pmSEA-LGW
14h 55m1 stop
$610Icelandair
Find Deal
Wed, Apr 8 - Wed, Apr 15
Icelandair Logo
3:40 pm - 8:45 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
3:45 pm - 2:40 pmSEA-LGW
14h 55m1 stop
$611Icelandair
Find Deal
Wed, Apr 8 - Wed, Apr 15
Icelandair Logo
3:40 pm - 8:45 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
7:00 pm - 2:40 pmSEA-LGW
11h 40m1 stop
$613Icelandair
Find Deal
Sun, Mar 15 - Thu, Mar 26
Icelandair Logo
11:55 am - 6:00 pmLGW-SEA
13h 05m1 stop
Icelandair Logo
3:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
$620Icelandair
Find Deal
Tue, Apr 21 - Wed, Sep 30
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
Icelandair Logo
7:10 pm - 2:40 pmSEA-LGW
11h 30m1 stop
$625Icelandair
Find Deal
Thu, Feb 19 - Tue, Mar 3
Multiple Airlines Logo
8:50 am - 5:00 pmLGW-SEA
16h 10m2 stops
Multiple Airlines Logo
2:35 pm - 9:05 pmSEA-LGW
22h 30m2 stops
$639Multiple Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 1
American Airlines Logo
12:30 pm - 12:58 amLGW-SEA
20h 28m2 stops
American Airlines Logo
5:48 am - 7:30 amSEA-LGW
17h 42m2 stops
$736American Airlines
Find Deal

Everything you should know

Top airlines
Icelandair
Cheapest • from $602 (round-trip)
Icelandair
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 24% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$602
Overall average: $865
Icelandair
Wed 12/3Thu 12/11
LGW - SEA • 1 stop
Cheapest one-way
$561
Multiple Airlines
Tue 12/16
LGW - SEA • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
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.

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 $538 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $976 and $901 respectively.

Find deals

Good to know

Low seasonOctober
Cheapest flight$561
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 26% increase in price.
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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $561 for a one-way ticket and $602 for a round-trip.

  • Do I need a passport to fly between London Gatwick Airport and Seattle?

    Yes, you'll most likely have to show a valid passport before boarding the plane in London Gatwick Airport and on arrival in Seattle.

  • Which airports will I be using when flying from London Gatwick Airport to Seattle?

    London Gatwick Airport airport is called London Gatwick and the only airport in Seattle is Seattle/Tacoma Intl.

  • 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 travelers 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 round-trip ticket. You could then fly to Seattle with an airline and back to London Gatwick Airport with another airline. Booking your flights between London Gatwick Airport and SEA can sometimes prove cheaper using this method.

  • 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 563 reviews
6.9Comfort
7.0Entertainment
6.2Food
7.2Boarding
8.1Crew
Airline reviews

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

6.0 GoodAnonymous, Nov 2025CPH - KEF
Read more Icelandair reviews

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 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.

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.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

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.

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.