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$639+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$695
(Delta)

One-way from

$639
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$771
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. 12% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 3, 2025.

This Delta deal was found by Cheapflights users on 3/3. 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.
Tue 3/186:05 amGLA - SEA
1 stop13h 35mDelta
Tue 4/11:35 pmSEA - GLA
2 stops18h 35mDelta
Deal found 3/3$695
This Lufthansa deal was found by Cheapflights users on 3/3. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:10 amGLA - SEA
1 stop14h 15mLufthansa
Wed 4/302:15 pmSEA - GLA
1 stop14h 10mLufthansa
Deal found 3/3$778
This Expedia deal was found by Cheapflights users on 3/3. 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.
Tue 4/11:35 pmGLA - SEA
1 stop12h 15mIcelandair
Tue 4/227:00 pmSEA - GLA
1 stop10h 25mIcelandair
Deal found 3/3$861
This American Airlines deal was found by Cheapflights users on 3/3. 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.
Tue 4/110:55 amGLA - SEA
2 stops19h 41mMultiple Airlines
Tue 4/2211:59 pmSEA - GLA
2 stops26h 21mMultiple Airlines
Deal found 3/3$963
This TravelUp deal was found by Cheapflights users on 3/2. 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.
Mon 4/74:55 pmGLA - SEA
1 stop31h 05mKLM
Fri 4/189:35 amSEA - GLA
2 stops16h 05mKLM
Deal found 3/2$998
This TravelUp deal was found by Cheapflights users on 3/2. 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.
Mon 4/73:25 pmGLA - SEA
2 stops39h 44mFinnair
Fri 4/181:35 pmSEA - GLA
2 stops24h 45mFinnair
Deal found 3/2$1,069
This ChecknFly deal was found by Cheapflights users on 3/3. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/308:10 pmGLA - SEA
2 stops34h 17mAer Lingus
Sat 4/198:20 pmSEA - GLA
2 stops27h 45mAer Lingus
Deal found 3/3$1,131

Find flights from Glasgow Intl to Seattle within your budget

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 March 3, 2025.

Fly from

Glasgow Intl

Fly to

Seattle

Route

Depart

Return

Price

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 3/18

6:05 am-12:40 pm

1 stop13h 35m

Seattle/Tacoma Intl

Tue 4/1

1:35 pm-4:10 pm

2 stops18h 35m

$695

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Thu 4/10

6:10 am-12:25 pm

1 stop14h 15m

Seattle/Tacoma Intl

Wed 4/30

2:15 pm-12:25 pm

1 stop14h 10m

$778

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 4/1

1:35 pm-5:50 pm

1 stop12h 15m

Seattle/Tacoma Intl

Tue 4/22

7:00 pm-1:25 pm

1 stop10h 25m

$861

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Tue 4/1

10:55 am-10:36 pm

2 stops19h 41m

Seattle/Tacoma Intl

Tue 4/22

11:59 pm-10:20 am

2 stops26h 21m

$963

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 4/7

4:55 pm-4:00 pm

1 stop31h 05m

Seattle/Tacoma Intl

Fri 4/18

9:35 am-9:40 am

2 stops16h 05m

$998

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Mon 4/7

3:25 pm-11:09 pm

2 stops39h 44m

Seattle/Tacoma Intl

Fri 4/18

1:35 pm-10:20 pm

2 stops24h 45m

$1,069

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 3/30

8:10 pm-10:27 pm

2 stops34h 17m

Seattle/Tacoma Intl

Sat 4/19

8:20 pm-8:05 am

2 stops27h 45m

$1,131

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 8/9

11:50 pm-6:38 pm

2 stops26h 48m

$639

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sun 4/20

5:20 pm-4:59 pm

1 stop31h 39m

$666

GlasgowSeattle

GLA - SEA

GLASEA

Glasgow Intl

Sat 8/9

2:20 pm-8:40 pm

1 stop14h 20m

$779

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 11 results
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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 March.
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.

Travel insights for flights from Glasgow Intl to Seattle

Get recent, data-driven insights about flights from Glasgow Intl to Seattle including ideal travel times, pricing trends, and more.

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 February 28, 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 March 3, 2025.
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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
8,068 reviews
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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
1,323 reviews
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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
1,271 reviews
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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
7.1
Good
484 reviews
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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

Aer Lingus
7.0
Good
1,064 reviews
Delta
8.0
Very good
8,068 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

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 Delta is currently your cheapest option to Seattle, with prices starting at $695. Additional round-trip tickets that might be worth considering are offered by Lufthansa and Icelandair, with the lowest prices starting at $778 and $861, respectively. Delta 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 Aer Lingus. According to our data, you can fly for as low as $666. Users have also found prices from $779 and $795 on Icelandair 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
Renton
Lacey
Ocean Shores
Tacoma
Leavenworth
Federal Way
Centralia
Olympia
Cle Elum
Lakewood
Mukilteo
Aberdeen
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale
Redmond

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