What is the cheapest airline that flies from Glasgow Intl to Seattle/Tacoma Intl?

WestJet, British Airways, and Finnair are the most popular carriers operating from Glasgow Intl to Seattle/Tacoma Intl

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

Prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport were last updated today.

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

As of December 2025, there is 1 operator available to choose from for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.

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

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$530 Cheap Flights from Glasgow Intl Airport to Seattle in 2025/26

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Find the cheapest flights from Glasgow Intl Airport to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:35 pm - 5:00 pm

GLA

SEA

12h 25m1 stop

2:35 pm - 9:55 am

SEA

GLA

11h 20m1 stop

$753Icelandair

Wed, Jan 14 - Wed, Jan 28

12:35 pm - 5:00 pm

GLA

SEA

12h 25m1 stop

2:35 pm - 9:55 am

SEA

GLA

11h 20m1 stop

$798Icelandair

Fri, Feb 6 - Fri, Feb 20

12:35 pm - 5:00 pm

GLA

SEA

12h 25m1 stop

2:35 pm - 9:55 am

SEA

GLA

11h 20m1 stop

$813Icelandair

Sun, Jan 18 - Sun, Feb 1

2:00 pm - 4:55 pm

GLA

SEA

34h 55m1 stop

6:50 pm - 3:50 pm

SEA

GLA

13h 00m1 stop

$814American Airlines

Tue, Jan 20 - Wed, Feb 4

7:10 pm - 4:55 pm

GLA

SEA

29h 45m1 stop

6:50 pm - 3:50 pm

SEA

GLA

13h 00m1 stop

$818British Airways

Tue, Jan 13 - Wed, Jan 28

8:25 am - 5:00 pm

GLA

SEA

16h 35m2 stops

2:35 pm - 8:00 pm

SEA

GLA

21h 25m2 stops

$819Multiple Airlines

Fri, Jan 23 - Fri, Jan 30

8:55 am - 10:20 pm

GLA

SEA

21h 25m2 stops

6:50 pm - 4:35 pm

SEA

GLA

13h 45m1 stop

$820American Airlines

Mon, Jan 19 - Mon, Feb 2

6:35 am - 10:07 pm

GLA

SEA

23h 32m2 stops

6:50 pm - 4:35 pm

SEA

GLA

13h 45m1 stop

$825American Airlines

Mon, Jan 12 - Mon, Jan 26

6:35 am - 11:30 am

GLA

SEA

12h 55m1 stop

6:50 pm - 4:35 pm

SEA

GLA

13h 45m1 stop

$828British Airways

Fri, Jan 16 - Mon, Feb 2

12:35 pm - 5:00 pm

GLA

SEA

12h 25m1 stop

2:35 pm - 9:55 am

SEA

GLA

11h 20m1 stop

$835Icelandair

Sat, Feb 7 - Sat, Feb 21

Icelandair flights from Glasgow Intl Airport to Seattle

Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets

Icelandair

Jan 14

GLA12:35 pmGlasgow Intl

12h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Jan 28

SEA2:35 pmSeattle/Tacoma Intl

11h 20m

1 stop

GLA9:55 amGlasgow Intl

$753

Find similar

Icelandair

Feb 6

GLA12:35 pmGlasgow Intl

12h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Feb 20

SEA2:35 pmSeattle/Tacoma Intl

11h 20m

1 stop

GLA9:55 amGlasgow Intl

$798

Find similar

Icelandair

Jan 18

GLA12:35 pmGlasgow Intl

12h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Feb 1

SEA2:35 pmSeattle/Tacoma Intl

11h 20m

1 stop

GLA9:55 amGlasgow Intl

$813

Find similar

American Airlines flights from Glasgow Intl Airport to Seattle

Our best American Airlines deals on Glasgow Intl Airport to Seattle flight tickets

American Airlines

Jan 20

GLA2:00 pmGlasgow Intl

34h 55m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Feb 4

SEA6:50 pmSeattle/Tacoma Intl

13h 00m

1 stop

GLA3:50 pmGlasgow Intl

$814

Find similar

American Airlines

Jan 19

GLA8:55 amGlasgow Intl

21h 25m

2 stops

SEA10:20 pmSeattle/Tacoma Intl

Feb 2

SEA6:50 pmSeattle/Tacoma Intl

13h 45m

1 stop

GLA4:35 pmGlasgow Intl

$820

Find similar

American Airlines

Jan 12

GLA6:35 amGlasgow Intl

23h 32m

2 stops

SEA10:07 pmSeattle/Tacoma Intl

Jan 26

SEA6:50 pmSeattle/Tacoma Intl

13h 45m

1 stop

GLA4:35 pmGlasgow Intl

$825

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Glasgow Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 1/14

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Wed 1/28

2:35 pm-9:55 am

1 stop11h 20m

$753

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 2/6

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Fri 2/20

2:35 pm-9:55 am

1 stop11h 20m

$798

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 1/18

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sun 2/1

2:35 pm-9:55 am

1 stop11h 20m

$813

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 1/20

2:00 pm-4:55 pm

1 stop34h 55m

Seattle/Tacoma Intl

Wed 2/4

6:50 pm-3:50 pm

1 stop13h 00m

$814

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 1/13

7:10 pm-4:55 pm

1 stop29h 45m

Seattle/Tacoma Intl

Wed 1/28

6:50 pm-3:50 pm

1 stop13h 00m

$818

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/23

8:25 am-5:00 pm

2 stops16h 35m

Seattle/Tacoma Intl

Fri 1/30

2:35 pm-8:00 pm

2 stops21h 25m

$819

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 1/19

8:55 am-10:20 pm

2 stops21h 25m

Seattle/Tacoma Intl

Mon 2/2

6:50 pm-4:35 pm

1 stop13h 45m

$820

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 1/12

6:35 am-10:07 pm

2 stops23h 32m

Seattle/Tacoma Intl

Mon 1/26

6:50 pm-4:35 pm

1 stop13h 45m

$825

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Fri 1/16

6:35 am-11:30 am

1 stop12h 55m

Seattle/Tacoma Intl

Mon 2/2

6:50 pm-4:35 pm

1 stop13h 45m

$828

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 2/7

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sat 2/21

2:35 pm-9:55 am

1 stop11h 20m

$835

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Glasgow Intl 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

Prices

Airlines

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Glasgow Intl Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $656. If you don’t want to visit Seattle in January, then you should wait until September to fly from Glasgow Intl Airport, when ticket prices are also cheap, with an average price of $696.

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

On average, the least expensive day to fly to Seattle from Glasgow Intl Airport is on a Monday. momondo users have found tickets for Monday departures for as low as $641. 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 Glasgow Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,356.

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

Flying to Seattle from Glasgow Intl Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $924 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $1,024. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Glasgow Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $825 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Glasgow Intl Airport for as low as $759 on momondo.

How have Glasgow Intl Airport to Seattle flight prices changed over time?

When to book flights from Glasgow Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Glasgow Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Glasgow Intl Airport to Seattle (GLA to SEA) flight deals and tips

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

Fastest flight time	12h 55m
Direct flights	None

The fastest flight from Glasgow Intl Airport to Seattle takes 12h 55m

There are no direct flights from Glasgow Intl Airport to Seattle. There are no popular flight routes from Glasgow Intl Airport to Seattle.

Search flight deals

How far is Glasgow Intl to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 4436.4 mi away from Glasgow Intl. In terms of flight time, this usually takes a little over 12h 55m.
When did momondo last update prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
As of December 2025, there is 1 operator available to choose from for flights from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Glasgow Intl Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Glasgow Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Glasgow Intl Airport to Seattle?
momondo data reveals that the most frequently booked airline on the route from Glasgow Intl Airport to Seattle is British Airways, representing 100% of all bookings.

Best airlines flying from Glasgow Intl Airport to Seattle

Compare and see reviews for airlines that fly from Glasgow Intl Airport to Seattle with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 7,573 reviews		Search British Airways flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Cle Elum

Federal Way

Lakewood

Fife

Westport

Kirkland

Centralia

Shoreline

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Glasgow.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Glasgow to Seattle.

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

Yes. momondo can track prices for Glasgow to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.