Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Gatwick Airport to Seattle from $445

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Seattle departing on 4/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Gatwick Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 am - 8:40 pm
LGW
-
SEA
19h 00m
2 stops
Multiple Airlines Logo
3:40 pm - 5:10 pm
SEA
-
LGW
17h 30m
2 stops
$607Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
8:50 am - 5:55 pm
LGW
-
SEA
17h 05m
2 stops
Multiple Airlines Logo
3:40 pm - 5:55 pm
SEA
-
LGW
18h 15m
2 stops
$608Multiple Airlines
Wed, Apr 22 - Sun, Apr 26
Multiple Airlines Logo
8:40 am - 8:40 pm
LGW
-
SEA
20h 00m
2 stops
Multiple Airlines Logo
3:40 pm - 8:40 pm
SEA
-
LGW
21h 00m
2 stops
$610Multiple Airlines
Thu, Apr 16 - Wed, Apr 29
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
$611Icelandair
Wed, Jun 10 - Sun, Jun 21
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
$612Icelandair
Wed, Jun 10 - Sun, Jun 21
Multiple Airlines Logo
9:20 am - 8:40 pm
LGW
-
SEA
19h 20m
2 stops
Multiple Airlines Logo
7:00 pm - 8:10 pm
SEA
-
LGW
17h 10m
2 stops
$615Multiple Airlines
Tue, May 19 - Tue, May 26
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m
1 stop
$641Icelandair
Mon, May 4 - Fri, May 8
Multiple Airlines Logo
8:35 pm - 9:53 pm
LGW
-
SEA
33h 18m
3 stops
Multiple Airlines Logo
3:40 pm - 8:10 pm
SEA
-
LGW
20h 30m
2 stops
$650Multiple Airlines
Tue, Apr 28 - Mon, May 4
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
$651Icelandair
Thu, Apr 16 - Thu, Apr 23
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m
1 stop
$653Icelandair
Thu, Apr 16 - Fri, Apr 24

Condor flights from London Gatwick Airport to Seattle

Our best Condor deals on London Gatwick Airport to Seattle flight tickets
Condor
Apr 9
LGW10:25 amLondon Gatwick
13h 35m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
Apr 18
SEA6:00 pmSeattle/Tacoma Intl
16h 45m
1 stop
LGW6:45 pmLondon Gatwick
$694
Condor
Apr 6
LGW10:20 amLondon Gatwick
13h 50m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Apr 12
SEA5:40 pmSeattle/Tacoma Intl
13h 00m
1 stop
LGW2:40 pmLondon Gatwick
$766
Condor
Apr 3
LGW7:45 pmLondon Gatwick
28h 15m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
Apr 12
SEA5:40 pmSeattle/Tacoma Intl
13h 00m
1 stop
LGW2:40 pmLondon Gatwick
$789

Icelandair flights from London Gatwick Airport to Seattle

Our best Icelandair deals on London Gatwick Airport to Seattle flight tickets
Icelandair
Jun 10
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Jun 21
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
$611
Icelandair
Jun 10
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Jun 21
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
$612
Icelandair
May 4
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
May 8
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
$641

momondo Fare Finder

 
Customize your flight search to find flights from London Gatwick Airport to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 23, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/21

9:40 am-8:40 pm

2 stops19h 00m

Seattle/Tacoma Intl

Tue 4/28

3:40 pm-5:10 pm

2 stops17h 30m

$607

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 4/22

8:50 am-5:55 pm

2 stops17h 05m

Seattle/Tacoma Intl

Sun 4/26

3:40 pm-5:55 pm

2 stops18h 15m

$608

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 4/16

8:40 am-8:40 pm

2 stops20h 00m

Seattle/Tacoma Intl

Wed 4/29

3:40 pm-8:40 pm

2 stops21h 00m

$610
Quickest round-trip

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/10

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 6/21

7:00 pm-2:40 pm

1 stop11h 40m

$611

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/10

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 6/21

7:00 pm-2:40 pm

1 stop11h 40m

$612

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 5/19

9:20 am-8:40 pm

2 stops19h 20m

Seattle/Tacoma Intl

Tue 5/26

7:00 pm-8:10 pm

2 stops17h 10m

$615

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 5/4

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Fri 5/8

3:40 pm-2:40 pm

1 stop15h 00m

$641

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/28

8:35 pm-9:53 pm

3 stops33h 18m

Seattle/Tacoma Intl

Mon 5/4

3:40 pm-8:10 pm

2 stops20h 30m

$650

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 4/16

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-2:40 pm

1 stop11h 40m

$651

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 4/16

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Fri 4/24

3:40 pm-2:40 pm

1 stop15h 00m

$653

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from London Gatwick Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from London Gatwick Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $774. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London Gatwick Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,046.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from London Gatwick Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $825 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $878. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on London Gatwick Airport to Seattle flights?

You could potentially save up to 19% on your flight if you consider stops on a London Gatwick Airport to Seattle flight.

When to book flights from London Gatwick Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London Gatwick Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Gatwick Airport to Seattle (LGW to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Seattle

Fastest flight time

13h 00m

Direct flights

None
The fastest flight from London Gatwick Airport to Seattle takes 13h 00m
There are no direct flights from London Gatwick Airport to Seattle. There are no popular flight routes from London Gatwick Airport to Seattle.
Search flight deals

  • How far is London Gatwick to Seattle/Tacoma Intl by plane?

    A flight from London Gatwick to Seattle/Tacoma Intl will travel around 4798.7 mi. Typically, this will take 13h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from London Gatwick Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from London Gatwick Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Gatwick Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London Gatwick Airport to Seattle?

Best airlines flying from London Gatwick Airport to Seattle

Compare and see reviews for airlines that fly from London Gatwick Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $467Free CancellationRating
7.0
625 reviews
Search Icelandair flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Redmond
Marysville
Puyallup
Lakewood
Cle Elum
Tukwila
Federal Way
Centralia
Fife
Westport
Kirkland
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from London to Seattle?

It is quick and easy to find London to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from London to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from London.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 4/22
Wed 4/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States