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$585+ Cheap flights from Glasgow Intl (GLA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Glasgow Intl to Seattle/Tacoma Intl are usually found in February or September, booked 62 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Glasgow Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$760
(Air France)

One-way from

$585
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$825
From Glasgow Intl to Seattle/Tacoma Intl
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One-way flight from Glasgow Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 9% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Glasgow Intl to Seattle

Cheapest flights from Glasgow Intl to Seattle
Explore the most affordable flight options available from Glasgow Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Air France deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/156:00 amGLA - SEA
1 stop13h 35mAir France
mar. 7/291:50 pmSEA - GLA
1 stop25h 20mAir France
Deal found 6/11$760
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/236:00 amGLA - SEA
2 stops18h 48mDelta
lun. 7/75:35 pmSEA - GLA
1 stop14h 35mDelta
Deal found 6/11$766
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/158:35 amGLA - SEA
2 stops21h 08mAmerican Airlines
lun. 7/2810:46 amSEA - GLA
2 stops19h 54mAmerican Airlines
Deal found 6/11$773
This Expedia deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/161:05 pmGLA - SEA
2 stops19h 38mBritish Airways
mié. 7/308:20 pmSEA - GLA
1 stop15h 25mBritish Airways
Deal found 6/11$784
This Icelandair deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/162:20 pmGLA - SEA
1 stop11h 30mIcelandair
lun. 7/287:00 pmSEA - GLA
1 stop10h 25mIcelandair
Deal found 6/11$801
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/238:30 amGLA - SEA
3 stops44h 11mMultiple Airlines
lun. 7/73:45 pmSEA - GLA
2 stops22h 25mMultiple Airlines
Deal found 6/11$834
This Iberia deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/159:15 amGLA - SEA
2 stops23h 28mIberia
vie. 8/11:30 pmSEA - GLA
1 stop25h 50mIberia
Deal found 6/11$932
This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/174:55 pmGLA - SEA
1 stop30h 55mKLM
jue. 7/312:05 pmSEA - GLA
1 stop18h 05mKLM
Deal found 6/11$1,022
This Gurufare deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/288:10 pmGLA - SEA
1 stop29h 40mAer Lingus
lun. 8/1112:34 amSEA - GLA
2 stops23h 31mAer Lingus
Deal found 6/11$1,588

Cheapflights Fare Finder

Customize your flight search to find flights from Glasgow Intl 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, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to Seattle that are best for you.

Fly from

Glasgow Intl

Fly to

Seattle

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mar. 7/15

6:00 am-11:35 am

1 stop13h 35m

Seattle/Tacoma Intl

mar. 7/29

1:50 pm-11:10 pm

1 stop25h 20m

$760

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

lun. 6/23

6:00 am-4:48 pm

2 stops18h 48m

Seattle/Tacoma Intl

lun. 7/7

5:35 pm-4:10 pm

1 stop14h 35m

$766

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mar. 7/15

8:35 am-9:43 pm

2 stops21h 08m

Seattle/Tacoma Intl

lun. 7/28

10:46 am-2:40 pm

2 stops19h 54m

$773

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mié. 7/16

1:05 pm-12:43 am

2 stops19h 38m

Seattle/Tacoma Intl

mié. 7/30

8:20 pm-7:45 pm

1 stop15h 25m

$784

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mié. 7/16

2:20 pm-5:50 pm

1 stop11h 30m

Seattle/Tacoma Intl

lun. 7/28

7:00 pm-1:25 pm

1 stop10h 25m

$801

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

lun. 6/23

8:30 am-8:41 pm

3 stops44h 11m

Seattle/Tacoma Intl

lun. 7/7

3:45 pm-10:10 pm

2 stops22h 25m

$834

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

mar. 7/15

9:15 am-12:43 am

2 stops23h 28m

Seattle/Tacoma Intl

vie. 8/1

1:30 pm-11:20 pm

1 stop25h 50m

$932

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

jue. 7/17

4:55 pm-3:50 pm

1 stop30h 55m

Seattle/Tacoma Intl

jue. 7/31

2:05 pm-4:10 pm

1 stop18h 05m

$1,022

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

lun. 7/28

8:10 pm-5:50 pm

1 stop29h 40m

Seattle/Tacoma Intl

lun. 8/11

12:34 am-8:05 am

2 stops23h 31m

$1,588

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

vie. 7/25

2:20 pm-12:31 pm

3 stops54h 11m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 13 results
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Best time to book a flight from Glasgow Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Glasgow Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow Intl Airport to Seattle

How far ahead should I book a flight from Glasgow Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Glasgow Intl to Seattle. Price data was last updated on June 9, 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow Intl Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Glasgow Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of $238). Flying from Glasgow Intl Airport to Seattle in July is currently the most expensive (average of $391). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated junio 12, 2025.
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,117 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Glasgow Intl?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Glasgow Intl. Booking flights from Glasgow Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 0 daily inbound flights from Glasgow Intl from 0 different airlines.

  • What are the cheapest airlines flying from Glasgow Intl Airport to Seattle round-trip?

    Flying on Air France is currently your cheapest option to Seattle, with prices starting at $760. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $766 and $773, respectively. Air France is currently priced 9% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to Seattle one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $1,040. Users have also found prices from $1,198 and $1,766 on British Airways and Iberia, respectively.

  • Can I find deals for flights from Glasgow Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Glasgow Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Glasgow Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow Intl to Seattle.

  • Can I find deals for business class flights from Glasgow Intl to Seattle?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Glasgow Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of $238). Flying from Glasgow Intl Airport to Seattle in July is currently the most expensive (average of $391). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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