SEA - LGW

$464 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 7/5. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$854
Typical prices: $812-$527
Icelandair
Sat 9/12Tue 9/29
SEA - LGW • 1 stop
Cheapest one-way
$467
Condor
Sun 7/5
SEA - LGW • 1 stop
Top airlines
Icelandair
Cheapest • from $854 (round-trip)
Icelandair
Best reviews • 7.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Gatwick. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Reykjavik (KEF)
Cheapest • Avg $807 (round-trip)
Paris (CDG)
Shortest trip • 12h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 23% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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!
Flight Deals
Booking Insights
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

Sat, Sep 12 - Tue, Sep 29
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
$854Icelandair
Mon, Aug 3 - Tue, Aug 18
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 11:45 am
LGW
-
SEA
28h 05m
1 stop
$855Icelandair
Tue, Jul 21 - Mon, Aug 3
Multiple Airlines Logo
3:40 pm - 8:10 pm
SEA
-
LGW
20h 30m
2 stops
Multiple Airlines Logo
9:20 am - 11:45 am
LGW
-
SEA
34h 25m
2 stops
$856Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
7:00 pm - 8:10 pm
SEA
-
LGW
17h 10m
2 stops
Multiple Airlines Logo
8:45 pm - 8:40 pm
LGW
-
SEA
31h 55m
3 stops
$857Multiple Airlines
Sun, Jun 7 - Wed, Jun 17
Multiple Airlines Logo
5:40 pm - 10:05 pm
SEA
-
LGW
20h 25m
2 stops
Multiple Airlines Logo
9:00 pm - 4:00 pm
LGW
-
SEA
27h 00m
2 stops
$858Multiple Airlines
Mon, Jul 27 - Wed, Aug 12
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
$859Icelandair
Sun, Nov 8 - Mon, Nov 23
Icelandair Logo
2:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
$860Icelandair
Fri, Oct 30 - Mon, Dec 7
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
$861Icelandair
Wed, May 27 - Tue, Jun 2
Multiple Airlines Logo
3:40 pm - 8:10 pm
SEA
-
LGW
20h 30m
2 stops
Multiple Airlines Logo
9:20 am - 5:55 pm
LGW
-
SEA
16h 35m
2 stops
$862Multiple Airlines
Sun, May 31 - Wed, Jun 10
Multiple Airlines Logo
7:00 pm - 8:20 pm
SEA
-
LGW
17h 20m
2 stops
Multiple Airlines Logo
8:50 am - 6:45 pm
LGW
-
SEA
41h 55m
3 stops
$863Multiple Airlines
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.

How much is a round-trip flight from Seattle to London Gatwick Airport?

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

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 November, where tickets cost $519 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $968 and $949 respectively.

Find deals

Good to know

Low seasonMarch
Cheapest flight$467
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 4% 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 $464 for a one-way ticket and $854 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.
7.0
IcelandairOverall score based on 654 reviews
8.0Crew
6.2Food
7.2Boarding
6.9Entertainment
6.9Comfort
Airline reviews

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

8.0 ExcellentMary, May 2026
BOS - KEF
Read more Icelandair reviews

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.

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

The movie choices were poor. The worst problem is the treatment of passengers durinng pre-boarding. In one case the primes were checked in and sent down the boarding tunnek only to stand waiting there while the plane is cleaned. In the second case the bus was loaded, the doors closed and just stood there unmoving like sardeines in a tin for over TEN minutes. In both cases it was rough on us old guys who find standing for long periods trying.. In other words, Donnt just stack us up and forget us.

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

The most uncomfortable seat i’ve ever had on a flight

Iceland Air severely damaged a checked bag. Additionally, the gate agent caused issues for many passengers who had standard-sized onboard bags that would have passed inspection by any other airline.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

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

Information on your arrival and departure airports

Seattle (SEA)
Gatwick (LGW)