LGW - SEA

£359 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 11/2. 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
£393
Typical prices: £356-£450
SWISS
Wed 15/4Wed 22/4
LGW - SEA • 2 stops
Cheapest one-way flight
£359
Multiple Airlines
Wed 11/2
LGW - SEA • 1 stop
Top airlines
British Airways
Cheapest • from £402 (return)
Icelandair
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 25% 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

Wed, 15 Apr - Wed, 22 Apr
SWISS Logo
09:25 - 22:37
LGW
-
SEA
21h 12m2 stops
SWISS Logo
10:48 - 08:25
SEA
-
LGW
37h 37m2 stops
£393SWISS
Sun, 1 Feb - Tue, 17 Feb
British Airways Logo
11:45 - 23:51
LGW
-
SEA
44h 06m2 stops
British Airways Logo
06:44 - 19:00
SEA
-
LGW
28h 16m2 stops
£402British Airways
Sun, 22 Feb - Sun, 1 Mar
Multiple Airlines Logo
18:25 - 21:01
LGW
-
SEA
34h 36m2 stops
Multiple Airlines Logo
08:10 - 17:50
SEA
-
LGW
25h 40m2 stops
£402Multiple Airlines
Tue, 21 Apr - Wed, 6 May
SWISS Logo
09:25 - 22:37
LGW
-
SEA
21h 12m2 stops
SWISS Logo
10:52 - 08:25
SEA
-
LGW
37h 33m2 stops
£408SWISS
Sat, 24 Jan - Mon, 26 Jan
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m1 stop
Icelandair Logo
14:35 - 10:55
SEA
-
LGW
12h 20m1 stop
£408Icelandair
Fri, 10 Apr - Mon, 20 Apr
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m1 stop
£411Icelandair
Thu, 26 Feb - Thu, 12 Mar
Icelandair Logo
11:55 - 17:00
LGW
-
SEA
13h 05m1 stop
Icelandair Logo
15:35 - 10:55
SEA
-
LGW
12h 20m1 stop
£413Icelandair
Wed, 17 Jun - Sat, 5 Sep
SWISS Logo
09:25 - 18:30
LGW
-
SEA
17h 05m2 stops
SWISS Logo
16:30 - 17:50
SEA
-
LGW
17h 20m1 stop
£414SWISS
Fri, 17 Apr - Sat, 2 May
SWISS Logo
09:25 - 22:39
LGW
-
SEA
21h 14m2 stops
SWISS Logo
10:52 - 08:25
SEA
-
LGW
37h 33m2 stops
£417SWISS
Fri, 10 Apr - Mon, 20 Apr
Icelandair Logo
15:40 - 20:40
LGW
-
SEA
13h 00m1 stop
Icelandair Logo
15:40 - 14:40
SEA
-
LGW
15h 00m1 stop
£417Icelandair
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 April.

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 £379 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is £682 and £675 respectively.

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

Low seasonFebruary
Cheapest flight£359
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (33% 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 £359 for a one-way ticket and £393 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.
7.1
IcelandairOverall score based on 593 reviews
7.2Boarding
6.9Comfort
6.2Food
8.0Crew
7.0Entertainment
Airline reviews

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

8.0 ExcellentDetlef, Dec 2025
DEN - BER
Read more Icelandair reviews

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

Iceland air transfer was bad. They lost my luggage and I just received it 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.

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.

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

Information on your arrival and departure airports