SEA - LGW

$219 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 8/22. 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

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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Flights 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

Tue, Sep 23 - Thu, Sep 25
 Logo
9:35 pm - 6:20 amSEA-LGW
24h 45m1 stop
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10:00 am - 10:05 pmLGW-SEA
20h 05m1 stop
Wed, Aug 20 - Tue, Sep 23
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7:00 pm - 2:40 pmSEA-LGW
11h 40m1 stop
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10:00 am - 10:05 pmLGW-SEA
20h 05m1 stop
Tue, Sep 16 - Tue, Sep 23
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10:45 pm - 6:20 amSEA-LGW
23h 35m1 stop
 Logo
10:00 am - 10:05 pmLGW-SEA
20h 05m1 stop
Sun, Sep 28 - Mon, Oct 13
Icelandair Logo
7:00 pm - 2:40 pmSEA-LGW
11h 40m1 stop
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
$610Icelandair
Find Deal
Wed, Jul 30 - Thu, Aug 14
Virgin Atlantic Logo
7:15 am - 10:00 amSEA-LGW
18h 45m1 stop
Virgin Atlantic Logo
12:00 pm - 11:15 pmLGW-SEA
19h 15m1 stop
$612Virgin Atlantic
Find Deal
Sun, Oct 5 - Tue, Oct 14
Icelandair Logo
7:00 pm - 2:40 pmSEA-LGW
11h 40m1 stop
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
$615Icelandair
Find Deal
Wed, Jul 30 - Thu, Aug 14
Virgin Atlantic Logo
5:30 am - 10:00 amSEA-LGW
20h 30m2 stops
Virgin Atlantic Logo
12:00 pm - 11:15 pmLGW-SEA
19h 15m1 stop
$617Virgin Atlantic
Find Deal
Mon, Aug 25 - Tue, Sep 9
SWISS Logo
4:25 pm - 5:50 pmSEA-LGW
17h 25m1 stop
SWISS Logo
6:35 pm - 6:36 pmLGW-SEA
32h 01m2 stops
$663SWISS
Find Deal
Wed, Aug 20 - Tue, Sep 23
SWISS Logo
10:55 am - 5:55 pmSEA-LGW
23h 00m2 stops
SWISS Logo
6:35 pm - 6:36 pmLGW-SEA
32h 01m2 stops
$667SWISS
Find Deal
Sun, Jul 27 - Thu, Aug 28
British Airways Logo
7:49 am - 10:40 amSEA-LGW
18h 51m2 stops
British Airways Logo
10:40 am - 11:40 pmLGW-SEA
21h 00m2 stops
$668British Airways
Find Deal
Useful Info

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 $557 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is $910 and $780 respectively.

Good to know

Low seasonMarch
High seasonApril
Cheapest flight$219
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 20% lower on average.
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 $219 for a one-way ticket and $564 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.

  • Which airline alliances offer flights from Seattle to London Gatwick Airport?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seattle and London Gatwick Airport, with SkyTeam being the most commonly used for this 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.

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.
7.0
IcelandairOverall score based on 499 reviews
6.2Food
7.0Comfort
7.0Entertainment
7.1Boarding
8.0Crew
Airline reviews

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

4.0 OkaySamuel, Jun 2025BWI - KEF
Read more Icelandair reviews

Seats in premier saga class were narrow and hard. Very uncomfortable for a 5-hour flight.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset.

Iceland airlines doesn't provide any meal on flight to and from New York, except water and soda. Airline over charge for checking in luggage. I'm really upset. If there is option to use another company, I suggest to other people use them.

I had an exit row and so was Comfortable on the long flight.

The seats on this airline are sooo small, even for a petite person. I felt like the seat tilted forward and I was fighting to stay in it. The lavatory is horribly small, with a wet floor because the sink is so small you can't help but splash the water all over when washing up.

For an economy lite experience, it's by far the best I've had. New planes, clean, great destinations. Very happy to have discovered Iceland Air.

No food was served for 7.5 hrs flight. When our flight changed to other airlines due to wether issue, our seats booked with no checked in luggage when I already payed for. We end up to pay 90 euro per suitcase.

The flights were in time and the bags arrived. well done

Only serving 2 small coffee in 7.5 hrs flight with very limited choice to order food.

Booked with Kayak… Economy Class it said. I had filtered for 1 checked bag. Get to boarding and it says I have Economy Light w/ no checked bags. $136 each way for baggage now. Do not use smartfares.com. Very misleading and a terrible start to this trip.

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

Information on your arrival and departure airports

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