SEA - LGW

$369 Find Cheap Flights from Seattle to London Gatwick Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Gatwick departing on 1/14. 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 London Gatwick Airport

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

Cheap Flights from Seattle to Gatwick (SEA-LGW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Gatwick 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 Seattle to Gatwick

Mon, Dec 1 - Mon, Dec 8
Icelandair Logo
2:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
Icelandair Logo
11:55 am - 5:00 pmLGW-SEA
13h 05m1 stop
$518Icelandair
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Wed, Nov 12 - Wed, Nov 19
Multiple Airlines Logo
2:35 pm - 6:55 pmSEA-LGW
20h 20m2 stops
Multiple Airlines Logo
8:50 am - 5:00 pmLGW-SEA
16h 10m2 stops
$520Multiple Airlines
Find Deal
Tue, Mar 17 - Tue, Mar 24
Icelandair Logo
3:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
Icelandair Logo
11:55 am - 6:00 pmLGW-SEA
13h 05m1 stop
$521Icelandair
Find Deal
Thu, Jan 8 - Thu, Jan 15
Multiple Airlines Logo
2:35 pm - 7:45 pmSEA-LGW
21h 10m2 stops
Multiple Airlines Logo
8:50 am - 5:00 pmLGW-SEA
16h 10m2 stops
$523Multiple Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
Multiple Airlines Logo
2:35 pm - 2:30 pmSEA-LGW
15h 55m2 stops
Multiple Airlines Logo
8:50 am - 5:00 pmLGW-SEA
16h 10m2 stops
$526Multiple Airlines
Find Deal
Wed, Mar 25 - Wed, Apr 8
Icelandair Logo
3:35 pm - 10:55 amSEA-LGW
12h 20m1 stop
Icelandair Logo
3:40 pm - 8:45 pmLGW-SEA
13h 05m1 stop
$528Icelandair
Find Deal
Tue, Feb 10 - Wed, Feb 18
SWISS Logo
10:58 am - 5:50 pmSEA-LGW
22h 52m2 stops
SWISS Logo
6:40 pm - 10:43 pmLGW-SEA
36h 03m2 stops
$593SWISS
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Tue, Nov 18 - Wed, Dec 10
SWISS Logo
1:20 pm - 5:50 pmSEA-LGW
20h 30m2 stops
SWISS Logo
6:40 pm - 10:28 pmLGW-SEA
35h 48m2 stops
$605SWISS
Find Deal
Fri, Jan 9 - Mon, Jan 12
Turkish Airlines Logo
10:58 am - 4:10 pmSEA-LGW
45h 12m2 stops
Turkish Airlines Logo
6:20 am - 9:12 pmLGW-SEA
46h 52m2 stops
$612Turkish Airlines
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Fri, Jan 9 - Mon, Jan 12
Turkish Airlines Logo
7:00 pm - 9:20 amSEA-LGW
30h 20m1 stop
Turkish Airlines Logo
6:20 am - 9:12 pmLGW-SEA
46h 52m2 stops
$623Turkish Airlines
Find Deal

Everything you should know

Top airlines
Icelandair
Cheapest • from $518 (round-trip)
Icelandair
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 15% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$518
Overall average: $594
Icelandair
Mon 12/1Mon 12/8
SEA - LGW • 1 stop
Cheapest one-way
$369
Typical prices: $203-$380
Multiple Airlines
Wed 1/14
SEA - LGW • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Gatwick!
Booking Insights

KAYAK's insights & trends for Seattle to Gatwick flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to London Gatwick Airport, 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 Seattle to London Gatwick Airport is January, where tickets cost $563 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is $879 and $734 respectively.

Find deals

Good to know

Low seasonMarch
Cheapest flight$369
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Seattle to London Gatwick Airport

When to book flights from Seattle to Gatwick

Are your dates flexible? Find out the best times to travel from Seattle to Gatwick 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 Seattle to London Gatwick Airport flights

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

    In the last 3 days, the lowest price for a flight from Seattle to London Gatwick Airport was $369 for a one-way ticket and $518 for a round-trip.

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

    Yes, you’ll need a passport to travel to London Gatwick Airport from Seattle.

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

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

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

    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 Seattle to London Gatwick Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Gatwick Airport from Seattle 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 Seattle to London Gatwick Airport?

    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 London Gatwick Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and LGW 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 Seattle to London Gatwick Airport?

    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 London Gatwick Airport from Seattle 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 Seattle to Gatwick

 
See real verified KAYAK customer reviews for airlines flying from Seattle to London. 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 Seattle to Gatwick? 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 562 reviews
7.0Entertainment
7.2Boarding
6.2Food
8.1Crew
6.9Comfort
Airline reviews

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

8.0 ExcellentAnonymous, Oct 2025KEF - SEA
Read more Icelandair reviews

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

It was too cold in the plane my feet froze

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.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

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.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

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!

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

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

Information on your arrival and departure airports

Seattle (SEA)
Gatwick (LGW)

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