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Cheap flights from Glasgow Intl Airport to Seattle from $439

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Glasgow Intl Airport to Seattle departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Glasgow Intl Airport to Seattle (GLA-SEA)

Cheap round-trip flights

Icelandair Logo
2:20 pm - 5:50 pmGLA-SEA
11h 30m1 stop
Icelandair Logo
7:00 pm - 1:25 pmSEA-GLA
10h 25m1 stop
$675Icelandair
Find Deal
Mon, Sep 22 - Sun, Sep 28
Icelandair Logo
2:20 pm - 8:40 pmGLA-SEA
14h 20m1 stop
Icelandair Logo
3:35 pm - 9:55 amSEA-GLA
11h 20m1 stop
$700Icelandair
Find Deal
Wed, Oct 8 - Wed, Oct 29
British Airways Logo
8:40 am - 4:55 pmGLA-SEA
16h 15m1 stop
British Airways Logo
6:50 pm - 7:40 pmSEA-GLA
16h 50m1 stop
$753British Airways
Find Deal
Thu, Jan 1 - Thu, Jan 22
British Airways Logo
8:40 am - 4:55 pmGLA-SEA
16h 15m1 stop
British Airways Logo
6:50 pm - 3:10 pmSEA-GLA
12h 20m1 stop
$755British Airways
Find Deal
Thu, Jan 1 - Thu, Jan 22
KLM Logo
6:15 am - 3:55 pmGLA-SEA
17h 40m1 stop
KLM Logo
5:40 pm - 11:10 pmSEA-GLA
21h 30m1 stop
$768KLM
Find Deal
Wed, Aug 27 - Mon, Sep 8
KLM Logo
6:15 am - 3:55 pmGLA-SEA
17h 40m1 stop
KLM Logo
5:40 pm - 8:10 amSEA-GLA
30h 30m1 stop
$770KLM
Find Deal
Wed, Aug 27 - Mon, Sep 8
Logo
6:15 am - 2:45 pmGLA-SEA
16h 30m2 stops
Logo
5:40 pm - 11:10 pmSEA-GLA
21h 30m1 stop
$774
Find Deal
Wed, Aug 27 - Mon, Sep 8
Delta Logo
6:15 am - 3:55 pmGLA-SEA
17h 40m1 stop
Delta Logo
10:15 am - 4:10 pmSEA-GLA
21h 55m2 stops
$787Delta
Find Deal
Wed, Aug 27 - Mon, Sep 8
Delta Logo
6:15 am - 11:35 amGLA-SEA
13h 20m1 stop
Delta Logo
12:15 pm - 4:10 pmSEA-GLA
19h 55m2 stops
$789Delta
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Wed, Aug 27 - Mon, Sep 8
Logo
8:35 am - 10:16 pmGLA-SEA
21h 41m3 stops
Logo
12:00 pm - 9:25 pmSEA-GLA
25h 25m2 stops
$883
Find Deal
Sun, Sep 21 - Sun, Sep 28

British Airways flights from Glasgow Intl Airport to Seattle

Our best British Airways deals on Glasgow Intl Airport to Seattle flight tickets
British Airways
Jan 1
GLA8:40 amGlasgow Intl
16h 15m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Jan 22
SEA6:50 pmSeattle/Tacoma Intl
16h 50m
1 stop
GLA7:40 pmGlasgow Intl
$753
Find similar
British Airways
Jan 1
GLA8:40 amGlasgow Intl
16h 15m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
Jan 22
SEA6:50 pmSeattle/Tacoma Intl
12h 20m
1 stop
GLA3:10 pmGlasgow Intl
$755
Find similar
British Airways
Jan 1
GLA7:05 pmGlasgow Intl
24h 25m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Jan 22
SEA1:40 pmSeattle/Tacoma Intl
19h 00m
2 stops
GLA4:40 pmGlasgow Intl
$771
Find similar

Icelandair flights from Glasgow Intl Airport to Seattle

Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets
Icelandair
Sep 22
GLA2:20 pmGlasgow Intl
11h 30m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Sep 28
SEA7:00 pmSeattle/Tacoma Intl
10h 25m
1 stop
GLA1:25 pmGlasgow Intl
$675
Find similar
Icelandair
Oct 8
GLA2:20 pmGlasgow Intl
14h 20m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 29
SEA3:35 pmSeattle/Tacoma Intl
11h 20m
1 stop
GLA9:55 amGlasgow Intl
$700
Find similar
Icelandair
Sep 19
GLA2:20 pmGlasgow Intl
14h 20m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Sep 26
SEA7:00 pmSeattle/Tacoma Intl
10h 25m
1 stop
GLA1:25 pmGlasgow Intl
$780
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Glasgow Intl 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 August 7, 2025.
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

Mon 9/22

2:20 pm-5:50 pm

1 stop11h 30m

Seattle/Tacoma Intl

Sun 9/28

7:00 pm-1:25 pm

1 stop10h 25m

$675

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 10/8

2:20 pm-8:40 pm

1 stop14h 20m

Seattle/Tacoma Intl

Wed 10/29

3:35 pm-9:55 am

1 stop11h 20m

$700

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

8:40 am-4:55 pm

1 stop16h 15m

Seattle/Tacoma Intl

Thu 1/22

6:50 pm-7:40 pm

1 stop16h 50m

$753

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 1/1

8:40 am-4:55 pm

1 stop16h 15m

Seattle/Tacoma Intl

Thu 1/22

6:50 pm-3:10 pm

1 stop12h 20m

$755

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/27

6:15 am-3:55 pm

1 stop17h 40m

Seattle/Tacoma Intl

Mon 9/8

5:40 pm-11:10 pm

1 stop21h 30m

$768

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/27

6:15 am-3:55 pm

1 stop17h 40m

Seattle/Tacoma Intl

Mon 9/8

5:40 pm-8:10 am

1 stop30h 30m

$770

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/27

6:15 am-2:45 pm

2 stops16h 30m

Seattle/Tacoma Intl

Mon 9/8

5:40 pm-11:10 pm

1 stop21h 30m

$774

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/27

6:15 am-3:55 pm

1 stop17h 40m

Seattle/Tacoma Intl

Mon 9/8

10:15 am-4:10 pm

2 stops21h 55m

$787

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 8/27

6:15 am-11:35 am

1 stop13h 20m

Seattle/Tacoma Intl

Mon 9/8

12:15 pm-4:10 pm

2 stops19h 55m

$789

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 9/21

8:35 am-10:16 pm

3 stops21h 41m

Seattle/Tacoma Intl

Sun 9/28

12:00 pm-9:25 pm

2 stops25h 25m

$883

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 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

What is the cheapest month to fly to Seattle?

In general, February 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 $717. If you don’t want to visit Seattle in February, then you should wait until September to fly from Glasgow Intl Airport, when ticket prices are also cheap, with an average price of $729.

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 $839 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 $703 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

Best Price Found

$439

Fastest flight time

11h 30m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Glasgow Intl Airport in the past 72 hours is $439. The best round-trip flight deal from Glasgow Intl Airport to Seattle found on momondo in the last 72 hours is $675.
The fastest flight from Glasgow Intl Airport to Seattle takes 11h 30m
There are no direct flights from Glasgow Intl Airport to Seattle. Popular non-direct route for this connection is Glasgow Intl Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
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 11h 30m.

  • 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?

  • 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?

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 AirwaysPriceFrom $421Free CancellationRating
6.6
7,251 reviews
Search British Airways flights

Traveling to a place near Seattle?

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

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.

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