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$408+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
Apr 15 — Apr 221
Tue 4/15
Tue 4/22
1 adult, Economy
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Find cheap flights from Glasgow Intl to Seattle with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Glasgow Intl to Seattle/Tacoma Intl are usually found in February or January, 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 April 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$702
(Gotogate)

One-way from

$408
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$869
Provider with most accurate pricing for Glasgow Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Glasgow Intl-Seattle/Tacoma Intl flights.
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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. 11% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 10, 2025.

This Gotogate deal was found by Cheapflights users on 4/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/12:20 pmGLA - SEA
1 stop11h 30mIcelandair
Tue 5/67:00 pmSEA - GLA
1 stop10h 25mIcelandair
Deal found 4/9$702
This Delta deal was found by Cheapflights users on 4/9. 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.
Wed 4/306:00 amGLA - SEA
1 stop13h 45mDelta
Wed 5/77:25 amSEA - GLA
2 stops21h 35mDelta
Deal found 4/9$705
This KLM deal was found by Cheapflights users on 4/10. 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.
Wed 4/306:00 amGLA - SEA
1 stop13h 45mKLM
Wed 5/72:10 pmSEA - GLA
1 stop34h 00mKLM
Deal found 4/10$707
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/18:30 pmGLA - SEA
2 stops56h 12mMultiple Airlines
Tue 5/67:00 pmSEA - GLA
1 stop10h 25mMultiple Airlines
Deal found 4/9$726
This TravelUp deal was found by Cheapflights users on 4/9. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/16:10 amGLA - SEA
2 stops22h 08mLufthansa
Tue 5/62:15 pmSEA - GLA
2 stops24h 45mLufthansa
Deal found 4/9$728
This British Airways deal was found by Cheapflights users on 4/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/273:40 pmGLA - SEA
1 stop27h 55mBritish Airways
Mon 8/118:20 pmSEA - GLA
1 stop12h 25mBritish Airways
Deal found 4/9$1,285
This TravelUp deal was found by Cheapflights users on 4/9. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2610:10 amGLA - SEA
1 stop14h 49mAer Lingus
Fri 6/612:05 amSEA - GLA
2 stops24h 45mAer Lingus
Deal found 4/9$1,309
This Iberia deal was found by Cheapflights users on 4/9. 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.
Mon 7/2810:35 amGLA - SEA
1 stop32h 35mIberia
Mon 8/113:13 pmSEA - GLA
2 stops19h 17mIberia
Deal found 4/9$1,479
This Finnair deal was found by Cheapflights users on 4/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2810:35 amGLA - SEA
2 stops20h 24mFinnair
Mon 8/111:29 pmSEA - GLA
2 stops21h 01mFinnair
Deal found 4/9$1,573
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Sat 9/131:00 pmGLA - SEA
1 stop30h 30mAmerican Airlines
Mon 9/221:30 pmSEA - GLA
1 stop12h 35mAmerican Airlines
Deal found 4/9$4,322

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 April 10, 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

Thu 5/1

2:20 pm-5:50 pm

1 stop11h 30m

Seattle/Tacoma Intl

Tue 5/6

7:00 pm-1:25 pm

1 stop10h 25m

$702

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/30

6:00 am-11:45 am

1 stop13h 45m

Seattle/Tacoma Intl

Wed 5/7

7:25 am-1:00 pm

2 stops21h 35m

$705

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Wed 4/30

6:00 am-11:45 am

1 stop13h 45m

Seattle/Tacoma Intl

Wed 5/7

2:10 pm-8:10 am

1 stop34h 00m

$707

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/1

8:30 pm-8:42 pm

2 stops56h 12m

Seattle/Tacoma Intl

Tue 5/6

7:00 pm-1:25 pm

1 stop10h 25m

$726

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 5/1

6:10 am-8:18 pm

2 stops22h 08m

Seattle/Tacoma Intl

Tue 5/6

2:15 pm-11:00 pm

2 stops24h 45m

$728

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 7/27

3:40 pm-11:35 am

1 stop27h 55m

Seattle/Tacoma Intl

Mon 8/11

8:20 pm-4:45 pm

1 stop12h 25m

$1,285

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 4/26

10:10 am-4:59 pm

1 stop14h 49m

Seattle/Tacoma Intl

Fri 6/6

12:05 am-8:50 am

2 stops24h 45m

$1,309

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 7/28

10:35 am-11:10 am

1 stop32h 35m

Seattle/Tacoma Intl

Mon 8/11

3:13 pm-6:30 pm

2 stops19h 17m

$1,479

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 7/28

10:35 am-10:59 pm

2 stops20h 24m

Seattle/Tacoma Intl

Mon 8/11

1:29 pm-6:30 pm

2 stops21h 01m

$1,573

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 9/13

1:00 pm-11:30 am

1 stop30h 30m

Seattle/Tacoma Intl

Mon 9/22

1:30 pm-10:05 am

1 stop12h 35m

$4,322

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

Showing 1-10 of 15 results
1
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Compare providers for flights from Glasgow Intl to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Glasgow Intl to Seattle in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Glasgow Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Glasgow Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Glasgow Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Glasgow Intl Airport-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Glasgow Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 4, 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 $411). 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 April 10, 2025.
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,907 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Icelandair
7.0
Good
478 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Icelandair is currently your cheapest option to Seattle, with prices starting at $702. Additional round-trip tickets that might be worth considering are offered by Delta and Lufthansa, with the lowest prices starting at $705 and $728, respectively. Icelandair is currently priced 17% 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 $570. Users have also found prices from $625 and $864 on Aer Lingus and British Airways, 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 $411). 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
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Mukilteo
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond

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