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Cheap flights from Glasgow Intl Airport to Seattle from $408

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 12/9. 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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0 bags

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Find the cheapest flights from Glasgow Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:35 pm - 5:00 pmGLA-SEA
12h 25m1 stop
Icelandair Logo
2:35 pm - 9:55 amSEA-GLA
11h 20m1 stop
$740Icelandair
Find Deal
Mon, Nov 24 - Wed, Dec 3
Lufthansa Logo
6:10 am - 12:10 pmGLA-SEA
14h 00m1 stop
Lufthansa Logo
10:05 am - 12:05 pmSEA-GLA
18h 00m2 stops
$753Lufthansa
Find Deal
Mon, Nov 24 - Wed, Dec 3
Lufthansa Logo
6:10 am - 8:54 pmGLA-SEA
22h 44m2 stops
Lufthansa Logo
10:05 am - 12:05 pmSEA-GLA
18h 00m2 stops
$759Lufthansa
Find Deal
Mon, Nov 24 - Wed, Dec 3
British Airways Logo
6:05 pm - 4:55 pmGLA-SEA
30h 50m1 stop
British Airways Logo
1:48 pm - 2:40 pmSEA-GLA
16h 52m2 stops
$834British Airways
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Sun, Mar 1 - Tue, Mar 31
Delta Logo
6:05 am - 11:45 amGLA-SEA
13h 40m1 stop
Delta Logo
3:00 pm - 4:35 pmSEA-GLA
17h 35m1 stop
$845Delta
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Thu, Nov 13 - Tue, Nov 18
Delta Logo
6:05 am - 11:50 amGLA-SEA
13h 45m1 stop
Delta Logo
7:25 am - 12:45 pmSEA-GLA
21h 20m2 stops
$847Delta
Find Deal
Thu, Dec 11 - Wed, Dec 24
British Airways Logo
8:40 am - 4:55 pmGLA-SEA
16h 15m1 stop
British Airways Logo
7:50 pm - 4:35 pmSEA-GLA
13h 45m1 stop
$849British Airways
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Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
8:20 am - 5:00 pmGLA-SEA
16h 40m2 stops
Multiple Airlines Logo
2:35 pm - 8:05 pmSEA-GLA
21h 30m2 stops
$854Multiple Airlines
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Thu, Nov 20 - Tue, Nov 25
American Airlines Logo
9:55 am - 11:07 pmGLA-SEA
21h 12m2 stops
American Airlines Logo
7:00 am - 2:30 pmSEA-GLA
24h 30m2 stops
$861American Airlines
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Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
7:20 am - 9:04 amGLA-SEA
33h 44m3 stops
Multiple Airlines Logo
2:35 pm - 3:50 pmSEA-GLA
17h 15m2 stops
$882Multiple Airlines
Find Deal
Sat, Nov 29 - Sat, Dec 6

Lufthansa flights from Glasgow Intl Airport to Seattle

Our best Lufthansa deals on Glasgow Intl Airport to Seattle flight tickets
Lufthansa
Nov 24
GLA6:10 amGlasgow Intl
14h 00m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
Dec 3
SEA10:05 amSeattle/Tacoma Intl
18h 00m
2 stops
GLA12:05 pmGlasgow Intl
$753
Find similar
Lufthansa
Nov 24
GLA6:10 amGlasgow Intl
22h 44m
2 stops
SEA8:54 pmSeattle/Tacoma Intl
Dec 3
SEA10:05 amSeattle/Tacoma Intl
18h 00m
2 stops
GLA12:05 pmGlasgow Intl
$759
Find similar
Lufthansa
Mar 1
GLA12:45 pmGlasgow Intl
34h 16m
2 stops
SEA3:01 pmSeattle/Tacoma Intl
Mar 31
SEA10:10 amSeattle/Tacoma Intl
28h 50m
2 stops
GLA11:00 pmGlasgow Intl
$839
Find similar

Icelandair flights from Glasgow Intl Airport to Seattle

Our best Icelandair deals on Glasgow Intl Airport to Seattle flight tickets
Icelandair
Nov 24
GLA12:35 pmGlasgow Intl
12h 25m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Dec 3
SEA2:35 pmSeattle/Tacoma Intl
11h 20m
1 stop
GLA9:55 amGlasgow Intl
$740
Find similar
Icelandair
Mar 1
GLA12:35 pmGlasgow Intl
12h 25m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 31
SEA7:00 pmSeattle/Tacoma Intl
10h 25m
1 stop
GLA1:25 pmGlasgow Intl
$764
Find similar
Icelandair
Nov 20
GLA12:35 pmGlasgow Intl
12h 25m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Nov 25
SEA2:35 pmSeattle/Tacoma Intl
11h 20m
1 stop
GLA9:55 amGlasgow Intl
$787
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 October 16, 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 11/24

12:35 pm-5:00 pm

1 stop12h 25m

Seattle/Tacoma Intl

Wed 12/3

2:35 pm-9:55 am

1 stop11h 20m

$740

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 11/24

6:10 am-12:10 pm

1 stop14h 00m

Seattle/Tacoma Intl

Wed 12/3

10:05 am-12:05 pm

2 stops18h 00m

$753

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 11/24

6:10 am-8:54 pm

2 stops22h 44m

Seattle/Tacoma Intl

Wed 12/3

10:05 am-12:05 pm

2 stops18h 00m

$759

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 3/1

6:05 pm-4:55 pm

1 stop30h 50m

Seattle/Tacoma Intl

Tue 3/31

1:48 pm-2:40 pm

2 stops16h 52m

$834

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 11/13

6:05 am-11:45 am

1 stop13h 40m

Seattle/Tacoma Intl

Tue 11/18

3:00 pm-4:35 pm

1 stop17h 35m

$845

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 12/11

6:05 am-11:50 am

1 stop13h 45m

Seattle/Tacoma Intl

Wed 12/24

7:25 am-12:45 pm

2 stops21h 20m

$847

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 3/5

8:40 am-4:55 pm

1 stop16h 15m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-4:35 pm

1 stop13h 45m

$849

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 11/20

8:20 am-5:00 pm

2 stops16h 40m

Seattle/Tacoma Intl

Tue 11/25

2:35 pm-8:05 pm

2 stops21h 30m

$854

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 3/5

9:55 am-11:07 pm

2 stops21h 12m

Seattle/Tacoma Intl

Mon 3/9

7:00 am-2:30 pm

2 stops24h 30m

$861

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 11/29

7:20 am-9:04 am

3 stops33h 44m

Seattle/Tacoma Intl

Sat 12/6

2:35 pm-3:50 pm

2 stops17h 15m

$882

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 typical price of a round-trip flight between Glasgow Intl Airport and Seattle?

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 $697. 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 $698.

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 $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

Direct flights

None
There are no direct flights from Glasgow Intl Airport to Seattle. There are no popular flight routes from Glasgow Intl Airport to Seattle.
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  • 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 25m.

  • 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
6.7
7,457 reviews
Search British Airways 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
Marysville
Puyallup
Federal Way
Tukwila
Lakewood
Kirkland
Fife
Centralia
Shoreline
Cle Elum
Redmond
Westport

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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