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Cheap flights from London Gatwick Airport to Seattle from $555

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 9/24. 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

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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
11:05 am - 5:10 pm
LGW
-
SEA
14h 05m
1 stop
Multiple Airlines Logo
7:10 pm - 8:55 pm
SEA
-
LGW
17h 45m
1 stop
$712Multiple Airlines
Thu, Jun 4 - Sun, Jun 7
Multiple Airlines Logo
9:45 am - 5:10 pm
LGW
-
SEA
15h 25m
1 stop
Multiple Airlines Logo
7:10 pm - 4:55 pm
SEA
-
LGW
13h 45m
1 stop
$715Multiple Airlines
Thu, Jun 25 - Mon, Jun 29
Icelandair Logo
1:00 pm - 11:45 am
LGW
-
SEA
30h 45m
1 stop
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m
1 stop
$716Icelandair
Sun, Jun 21 - Sun, Jul 5
Multiple Airlines Logo
9:45 am - 5:10 pm
LGW
-
SEA
15h 25m
1 stop
Multiple Airlines Logo
7:10 pm - 5:50 pm
SEA
-
LGW
14h 40m
1 stop
$719Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$721Icelandair
Thu, Oct 22 - Sat, Oct 31
Icelandair Logo
3:40 pm - 11:45 am
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
$722Icelandair
Sun, Sep 6 - Tue, Sep 22
Condor Logo
10:20 am - 4:00 pm
LGW
-
SEA
13h 40m
1 stop
Condor Logo
6:10 pm - 6:50 pm
SEA
-
LGW
16h 40m
1 stop
$723Condor
Thu, Sep 17 - Mon, Sep 21
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m
1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$724Icelandair
Thu, Oct 22 - Wed, Oct 28
Icelandair Logo
3:40 pm - 11:45 am
LGW
-
SEA
28h 05m
1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m
1 stop
$726Icelandair
Sat, Sep 5 - Thu, Sep 17
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
$730Icelandair
Mon, Jun 15 - Mon, Jun 29

Icelandair flights from London Gatwick Airport to Seattle

Our best Icelandair deals on London Gatwick Airport to Seattle flight tickets
Icelandair
Jun 21
LGW1:00 pmLondon Gatwick
30h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Jul 5
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
$716
Icelandair
Oct 22
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 31
SEA3:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
LGW10:55 amLondon Gatwick
$721
Icelandair
Sep 6
LGW3:40 pmLondon Gatwick
28h 05m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Sep 22
SEA7:00 pmSeattle/Tacoma Intl
11h 40m
1 stop
LGW2:40 pmLondon Gatwick
$722

Condor flights from London Gatwick Airport to Seattle

Our best Condor deals on London Gatwick Airport to Seattle flight tickets
Condor
Sep 17
LGW10:20 amLondon Gatwick
13h 40m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
Sep 21
SEA6:10 pmSeattle/Tacoma Intl
16h 40m
1 stop
LGW6:50 pmLondon Gatwick
$723
Condor
May 22
LGW10:20 amLondon Gatwick
13h 40m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
May 29
SEA6:00 pmSeattle/Tacoma Intl
16h 50m
1 stop
LGW6:50 pmLondon Gatwick
$788
Condor
Jun 4
LGW10:20 amLondon Gatwick
13h 40m
1 stop
SEA4:00 pmSeattle/Tacoma Intl
Jun 13
SEA6:15 pmSeattle/Tacoma Intl
16h 30m
1 stop
LGW6:45 pmLondon Gatwick
$806

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 May 21, 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

Thu 6/4

11:05 am-5:10 pm

1 stop14h 05m

Seattle/Tacoma Intl

Sun 6/7

7:10 pm-8:55 pm

1 stop17h 45m

$712

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 6/25

9:45 am-5:10 pm

1 stop15h 25m

Seattle/Tacoma Intl

Mon 6/29

7:10 pm-4:55 pm

1 stop13h 45m

$715

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 6/21

1:00 pm-11:45 am

1 stop30h 45m

Seattle/Tacoma Intl

Sun 7/5

3:40 pm-2:40 pm

1 stop15h 00m

$716

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 6/17

9:45 am-5:10 pm

1 stop15h 25m

Seattle/Tacoma Intl

Wed 6/24

7:10 pm-5:50 pm

1 stop14h 40m

$719

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 10/22

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sat 10/31

3:35 pm-10:55 am

1 stop12h 20m

$721

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 9/6

3:40 pm-11:45 am

1 stop28h 05m

Seattle/Tacoma Intl

Tue 9/22

7:00 pm-2:40 pm

1 stop11h 40m

$722

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 9/17

10:20 am-4:00 pm

1 stop13h 40m

Seattle/Tacoma Intl

Mon 9/21

6:10 pm-6:50 pm

1 stop16h 40m

$723

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 10/22

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 10/28

3:35 pm-10:55 am

1 stop12h 20m

$724

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 9/5

3:40 pm-11:45 am

1 stop28h 05m

Seattle/Tacoma Intl

Thu 9/17

7:00 pm-2:40 pm

1 stop11h 40m

$726
Quickest round-trip

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 6/15

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 6/29

7:00 pm-2:40 pm

1 stop11h 40m

$730

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between London Gatwick Airport and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from London Gatwick Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Seattle in February, then you should wait until January to fly from London Gatwick Airport, when ticket prices are also cheap, with an average price of $529.

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 Monday. momondo users have found tickets for Monday departures for as low as $841. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday 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 $947.

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

Flying to Seattle from London Gatwick Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $855 when looking at flights departing at noon. Flights to Seattle are more costly in the afternoon, with an average ticket price of $905. Departure times in the afternoon 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 13% 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

12h 55m

Direct flights

None
The fastest flight from London Gatwick Airport to Seattle takes 12h 55m
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

Frequently asked questions about flying from London Gatwick Airport to Seattle

  • 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 12h 55m 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
656 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
Redmond
Kent
Puyallup
Lakewood
Tukwila
Marysville
Cle Elum
Federal Way
Fife
Centralia
Westport
Shoreline
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.

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