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Glasgow Intl

$272+ Cheap flights from Seattle (SEA) to Glasgow Intl (GLA)

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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Glasgow Intl are usually found in February or March, booked 36 days in advance, depart on a Monday or Sunday and return on a Monday

Cheap flight deals from Seattle to Glasgow Intl

Cheapest flights from Seattle to Glasgow Intl
Explore the most affordable flight options available from Seattle to Glasgow Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:35 pmSEA - GLA
1 stop11h 20mIcelandair
Wed 1/2112:35 pmGLA - SEA
1 stop12h 25mIcelandair
Deal found 12/2$613
This KLM deal was found by Cheapflights users on 12/1. 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.
Tue 12/303:05 pmSEA - GLA
1 stop17h 30mKLM
Tue 1/65:20 pmGLA - SEA
1 stop26h 30mKLM
Deal found 12/1$749
This oojo deal was found by Cheapflights users on 12/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:25 pmSEA - GLA
1 stop15h 40mBritish Airways
Tue 1/67:10 pmGLA - SEA
2 stops53h 26mBritish Airways
Deal found 12/1$810
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:35 pmSEA - GLA
1 stop11h 20mIcelandair
Tue 12/912:35 pmGLA - SEA
1 stop12h 25mIcelandair
Deal found 12/2$897
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:05 pmSEA - GLA
2 stops15h 20mBritish Airways
Wed 1/2111:40 amGLA - SEA
1 stop13h 15mBritish Airways
Deal found 12/2$957
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:05 pmSEA - GLA
2 stops15h 20mMultiple Airlines
Wed 1/2110:55 amGLA - SEA
2 stops15h 48mMultiple Airlines
Deal found 12/2$967
This Ovago deal was found by Cheapflights users on 12/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:00 amSEA - GLA
2 stops23h 00mAer Lingus
Sun 12/214:30 pmGLA - SEA
1 stop33h 50mAer Lingus
Deal found 12/2$1,017
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:50 pmSEA - GLA
1 stop13h 00mMultiple Airlines
Wed 12/1010:55 amGLA - SEA
2 stops16h 00mMultiple Airlines
Deal found 12/2$1,048
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:05 pmSEA - GLA
2 stops15h 20mBritish Airways
Sun 12/141:20 pmGLA - SEA
1 stop13h 00mBritish Airways
Deal found 12/2$1,070
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:50 pmSEA - GLA
1 stop13h 00mBritish Airways
Tue 12/912:45 pmGLA - SEA
2 stops18h 40mBritish Airways
Deal found 12/2$1,136

Find flight deals from Seattle to Glasgow Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Glasgow Intl (GLA). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$447
(Mytrip)

One-way from

$272
(Cheapflightsfares)

Popular in

July

Cheapest in

February

Average price

$733
Provider with most accurate pricing for Seattle/Tacoma Intl-Glasgow Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Glasgow Intl flights.
Search Deals
From Seattle/Tacoma Intl to Glasgow Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Glasgow Intl
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($209 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Glasgow Intl 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 December 4, 2025.
Use the filters below to find and compare flights from Seattle to Glasgow Intl Airport that are best for you.

Fly from

Seattle

Fly to

Glasgow Intl

Route

Depart

Return

Price

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 4/25

7:00 pm-1:25 pm

1 stop10h 25m

Glasgow Intl

Sat 5/2

2:20 pm-5:55 pm

1 stop11h 35m

$513

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 5/1

7:00 pm-1:25 pm

1 stop10h 25m

Glasgow Intl

Thu 5/21

2:20 pm-5:55 pm

1 stop11h 35m

$545

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 4/28

8:20 pm-4:45 pm

1 stop12h 25m

Glasgow Intl

Mon 5/18

8:50 pm-11:35 am

1 stop22h 45m

$572

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 4/27

1:35 pm-10:05 am

1 stop12h 30m

Glasgow Intl

Tue 5/19

8:45 am-6:25 pm

1 stop17h 40m

$572

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 4/28

8:20 pm-6:50 pm

1 stop14h 30m

Glasgow Intl

Tue 5/19

8:25 pm-11:35 am

1 stop23h 10m

$572

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 1/30

6:50 pm-6:00 pm

1 stop15h 10m

Glasgow Intl

Tue 2/3

6:25 am-4:55 pm

1 stop18h 30m

$581

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 4/29

8:20 pm-11:15 pm

1 stop18h 55m

Glasgow Intl

Fri 5/22

8:55 am-6:25 pm

1 stop17h 30m

$582

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 2/7

1:35 pm-1:20 pm

1 stop15h 45m

Glasgow Intl

Sat 2/14

9:35 am-4:55 pm

1 stop15h 20m

$586

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 3/6

6:50 pm-6:00 pm

1 stop15h 10m

Glasgow Intl

Fri 3/13

8:15 am-11:33 pm

2 stops22h 18m

$607

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 4/26

8:20 pm-7:50 pm

1 stop15h 30m

Glasgow Intl

Sun 5/3

5:55 am-11:35 am

1 stop13h 40m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Glasgow Intl

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 Seattle to Glasgow Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 Seattle-Glasgow Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Glasgow Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Glasgow Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Glasgow Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Seattle-Glasgow Intl Airport 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 Seattle to Glasgow Intl

Have a flexible travel schedule? Discover the best time to fly to Glasgow Intl from Seattle 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 Seattle to Glasgow Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Glasgow Intl. Price data was last updated on November 28, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Glasgow Intl Airport, you should look to book at least 36 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of $529). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of $821). 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.

What is the cheapest time of day to fly from SEA to GLA?

Find hourly flight availability from Seattle to Glasgow Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s typically best to fly out from Seattle to Glasgow Intl Airport in the evening. Doing so could potentially save you 9% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Seattle to Glasgow Intl Airport?

Reviews of airlines servicing Glasgow Intl

Get insights into the airlines that provide service to Glasgow Intl. 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 Glasgow Intl. Reviews last updated December 4, 2025.
Get a feel of what it's like to fly with American Airlines, Aer Lingus, and Icelandair from Seattle to Glasgow Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
American Airlines
7.2
Good
11,047 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Aer Lingus
7.2
Good
1,384 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Icelandair
7.0
Good
584 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
Lufthansa
6.8
Okay
7,612 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.
British Airways
6.7
Okay
7,562 reviews
American Airlines
7.2
Good
11,047 reviews

Crew

8.0

Boarding

7.5

Food

6.5

Comfort

7.2

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
4.0
Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Glasgow Intl. 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 from for flights from Seattle to Glasgow Intl?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Glasgow Intl. You should not have trouble finding flights to Glasgow Intl from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Glasgow Intl per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Seattle airport to Glasgow Intl. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Glasgow Intl Airport?

    For as low as $513, Icelandair can have you in Glasgow Intl Airport from Seattle in 10h 25m. The distance between Seattle and Glasgow Intl Airport is about 4445 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Seattle to Glasgow Intl Airport round-trip from $558. Other airlines that can offer you cheap pricing are Aer Lingus, from $689, and Lufthansa, from $701. Icelandair is currently priced 31% below the average price you’ll pay for this route.

  • Where are the most common layover locations when flying from Seattle to Glasgow Intl Airport?

    Most of the time, Seattle to Glasgow Intl Airport flights that have layovers will stop in Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Most Reykjavik visitors opt to spend their time experiencing Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool. Travelers on a layover in Reykjavik can visit Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool, by traveling 23.2 mi, 23.3 mi, and 24.6 mi, respectively after landing at Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $48 per day.

  • Where are the least popular layover locations for Seattle to Glasgow Intl Airport flights?

    Seattle to Glasgow Intl Airport flights have a layover in London the least frequently.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Glasgow Intl 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 Seattle to Glasgow Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of $529). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of $821). 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

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Alternative routes for Seattle to Glasgow Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Seattle to Glasgow Intl

Discover the top 5 airlines that operate flights from Seattle to Glasgow Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$556Average$774FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$689Average$946FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$701Average$837FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$707Average$884FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$750Average$794FlexibilityNo cancel feeOn-time71%

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