SEA - LGW

C$ 459 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 London departing on 15/7. 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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

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

Free to useThere are no hidden charges or fees.

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

Everything you should know

Cheapest round-trip
C$ 1,208
Typical prices: C$ 1,125-C$ 698
Delta
Tue 15/9Fri 16/10
SEA - LGW • 1 stop
Cheapest one-way flights
C$ 459
Icelandair
Wed 15/7
SEA - LGW • 1 stop
Direct flights
Not available
There are currently no direct flights between Seattle and London. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
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 London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to London (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 London 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 London

Tue, 15 Sep - Fri, 16 Oct
Delta Logo
1:30 p.m. - 9:25 a.m.
SEA
-
LGW
11h 55m
1 stop
Delta Logo
10:25 a.m. - 5:47 p.m.
LGW
-
SEA
15h 22m
1 stop
C$ 1,208Delta
Mon, 14 Sep - Thu, 15 Oct
SWISS Logo
7:00 a.m. - 8:25 a.m.
SEA
-
LGW
17h 25m
2 stops
SWISS Logo
9:25 a.m. - 6:32 p.m.
LGW
-
SEA
17h 07m
2 stops
C$ 1,211SWISS
Tue, 6 Oct - Wed, 21 Oct
SWISS Logo
7:00 a.m. - 8:25 a.m.
SEA
-
LGW
17h 25m
2 stops
SWISS Logo
9:25 a.m. - 6:32 p.m.
LGW
-
SEA
17h 07m
2 stops
C$ 1,212SWISS
Wed, 25 Nov - Fri, 27 Nov
Delta Logo
7:20 a.m. - 9:00 a.m.
SEA
-
LGW
17h 40m
2 stops
Delta Logo
10:00 a.m. - 3:21 p.m.
LGW
-
SEA
13h 21m
1 stop
C$ 1,214Delta
Sat, 22 Aug - Fri, 18 Sep
Icelandair Logo
7:00 p.m. - 2:35 p.m.
SEA
-
LGW
11h 35m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 1,215Icelandair
Sat, 22 Aug - Wed, 16 Sep
Icelandair Logo
7:00 p.m. - 2:35 p.m.
SEA
-
LGW
11h 35m
1 stop
Icelandair Logo
3:40 p.m. - 5:55 p.m.
LGW
-
SEA
34h 15m
1 stop
C$ 1,216Icelandair
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
7:00 p.m. - 2:40 p.m.
SEA
-
LGW
11h 40m
1 stop
Multiple Airlines Logo
9:25 a.m. - 6:32 p.m.
LGW
-
SEA
17h 07m
2 stops
C$ 1,221Multiple Airlines
Tue, 17 Nov - Tue, 24 Nov
Virgin Atlantic Logo
1:40 p.m. - 3:45 p.m.
SEA
-
LGW
18h 05m
1 stop
Virgin Atlantic Logo
10:00 a.m. - 12:18 a.m.
LGW
-
SEA
22h 18m
2 stops
C$ 1,222Virgin Atlantic
Mon, 14 Sep - Tue, 13 Oct
SWISS Logo
7:00 a.m. - 8:25 a.m.
SEA
-
LGW
17h 25m
2 stops
SWISS Logo
9:25 a.m. - 10:56 p.m.
LGW
-
SEA
21h 31m
2 stops
C$ 1,225SWISS
Sun, 5 Jul - Thu, 16 Jul
Icelandair Logo
7:00 p.m. - 11:45 a.m.
SEA
-
LGW
32h 45m
1 stop
Icelandair Logo
3:40 p.m. - 8:40 p.m.
LGW
-
SEA
13h 00m
1 stop
C$ 1,226Icelandair
Booking Insights

KAYAK's insights & trends for Seattle to London flights

Get data-powered insights and trends into flights from Seattle to London 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 August, where tickets cost C$ 722 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is C$ 1,358 and C$ 1,333 respectively.

Good to know

Low seasonAugust
Cheapest flightC$ 459
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (2% more expensive on average)
Flight from Seattle to London Gatwick Airport

When to book flights from Seattle to London

Are your dates flexible? Find out the best times to travel from Seattle to London 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 5 days, the lowest price for a flight from Seattle to London Gatwick Airport was C$ 459 for a one-way ticket and C$ 1,208 for a round-trip.

  • 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 travellers 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.

  • 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.

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

Information on your arrival and departure airports