Cheap flights from Glasgow Intl Airport to Seattle from £328
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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
6 Dec — 13 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Glasgow Intl to Seattle/Tacoma Intl are usually found in January or September, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Monday
Find flight deals from Glasgow Intl to Seattle
Enter your travel dates to find the best prices.
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 6 November 2025.
Fri 5/1213:20GLA - SEA
1 stop13h 00mAer Lingus
Fri 12/1220:05SEA - GLA
1 stop11h 55mAer Lingus
Deal found 5/11£605
Wed 5/1112:35GLA - SEA
1 stop12h 25mIcelandair
Tue 11/1114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 4/11£657
Thu 6/1112:35GLA - SEA
1 stop12h 25mIcelandair
Tue 11/1114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 4/11£682
Fri 5/1212:35GLA - SEA
1 stop12h 25mMultiple Airlines
Fri 12/1208:44SEA - GLA
2 stops17h 11mMultiple Airlines
Deal found 5/11£693
Mon 15/1217:20GLA - SEA
1 stop26h 30mVirgin Atlantic
Mon 22/1206:10SEA - GLA
2 stops18h 20mVirgin Atlantic
Deal found 5/11£707
Mon 15/1217:20GLA - SEA
1 stop26h 30mMultiple Airlines
Mon 22/1215:05SEA - GLA
1 stop23h 05mMultiple Airlines
Deal found 5/11£736
Thu 6/1112:35GLA - SEA
1 stop12h 25mIcelandair
Wed 12/1108:37SEA - GLA
2 stops17h 18mIcelandair
Deal found 4/11£838
Best flights from Glasgow Intl to Seattle
Discover carefully curated flight deals from Glasgow Intl to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 November 2025.
Thu 5/312:35GLA - SEA
1 stop12h 25mIcelandair
Mon 9/315:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 5/11£479
Fri 5/1213:20GLA - SEA
1 stop13h 00mAer Lingus
Fri 12/1220:05SEA - GLA
1 stop11h 55mAer Lingus
Deal found 5/11£605
Thu 5/313:45GLA - SEA
1 stop29h 45mAmerican Airlines
Mon 9/313:48SEA - GLA
2 stops17h 42mAmerican Airlines
Deal found 5/11£641
Tue 21/409:40GLA - SEA
2 stops42h 30mLufthansa
Tue 19/508:00SEA - GLA
2 stops24h 40mLufthansa
Deal found 5/11£650
Tue 21/414:20GLA - SEA
1 stop11h 30mIcelandair
Tue 19/515:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 5/11£537
Tue 21/409:15GLA - SEA
1 stop17h 10mAmerican Airlines
Tue 19/513:33SEA - GLA
2 stops17h 07mAmerican Airlines
Deal found 5/11£646
Last-minute flights from Glasgow Intl to Seattle
Discover last-minute flight deals from Glasgow Intl to Seattle. Data last updated 6 November 2025 and is based on user searches.
Wed 5/1112:35GLA - SEA
1 stop12h 25mIcelandair
Tue 11/1114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 4/11£657
Thu 6/1112:35GLA - SEA
1 stop12h 25mIcelandair
Tue 11/1114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 4/11£682
Thu 6/1112:35GLA - SEA
1 stop12h 25mIcelandair
Wed 12/1108:37SEA - GLA
2 stops17h 18mIcelandair
Deal found 4/11£838
Fri 5/1213:20GLA - SEA
1 stop13h 00mAer Lingus
Fri 12/1220:05SEA - GLA
1 stop11h 55mAer Lingus
Deal found 5/11£605
Fri 5/1212:35GLA - SEA
1 stop12h 25mMultiple Airlines
Fri 12/1208:44SEA - GLA
2 stops17h 11mMultiple Airlines
Deal found 5/11£693
Mon 15/1217:20GLA - SEA
1 stop26h 30mVirgin Atlantic
Mon 22/1206:10SEA - GLA
2 stops18h 20mVirgin Atlantic
Deal found 5/11£707
Mon 15/1217:20GLA - SEA
1 stop26h 30mMultiple Airlines
Mon 22/1215:05SEA - GLA
1 stop23h 05mMultiple Airlines
Deal found 5/11£736
One-way flights from Glasgow Intl to Seattle
Search for one-way flight options from Glasgow Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated 6 November 2025.
Sat 28/220:40GLA - SEA
3 stops52h 32mMultiple Airlines
Deal found 4/11£328
Fri 27/223:00GLA - SEA
3 stops57h 11mMultiple Airlines
Deal found 4/11£345
Sun 1/309:55GLA - SEA
2 stops36h 54mMultiple Airlines
Deal found 4/11£364
Sat 28/212:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 4/11£396
Mon 15/1213:20GLA - SEA
1 stop13h 00mAer Lingus
Deal found 4/11£536
Wed 17/1212:45GLA - SEA
2 stops18h 39mBritish Airways
Deal found 5/11£560
Mon 15/1212:45GLA - SEA
2 stops18h 40mMultiple Airlines
Deal found 4/11£561
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 6 November 2025.
Customise 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 858,174 searches. Data last updated 6 November 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 5/3
12:35-17:00
1 stop12h 25m
Seattle/Tacoma Intl
Mon 9/3
15:35-09:55
1 stop11h 20m
£479
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 21/4
14:20-17:50
1 stop11h 30m
Seattle/Tacoma Intl
Tue 19/5
15:45-13:25
1 stop13h 40m
£537
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Fri 5/12
13:20-18:20
1 stop13h 00m
Seattle/Tacoma Intl
Fri 12/12
20:05-16:00
1 stop11h 55m
£605
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 5/3
13:45-11:30
1 stop29h 45m
Seattle/Tacoma Intl
Mon 9/3
13:48-14:30
2 stops17h 42m
£641
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 21/4
09:15-18:25
1 stop17h 10m
Seattle/Tacoma Intl
Tue 19/5
13:33-14:40
2 stops17h 07m
£646
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 21/4
09:40-20:10
2 stops42h 30m
Seattle/Tacoma Intl
Tue 19/5
08:00-16:40
2 stops24h 40m
£650
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sat 28/2
20:40-17:12
3 stops52h 32m
£328
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Fri 27/2
23:00-00:11
3 stops57h 11m
£345
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 1/3
09:55-14:49
2 stops36h 54m
£364
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sat 28/2
12:35-17:00
1 stop12h 25m
£396
Flights are sorted by cheapest return flights first.
Deals found on 4/11
Showing 1-10 of 14 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 return 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
Prices
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 return flight from Glasgow Intl to Seattle. Price data was last updated on 31 October 2025.
To ensure you get the cheapest price possible for a flight from Glasgow Intl Airport to Seattle, you should look to book at least 62 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 Glasgow Intl Airport to Seattle?
Currently, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £374). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £616). 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’s the top stopover airport for flights from Glasgow Intl Airport to Seattle?
Share of one-stop return flights from Glasgow Intl Airport to Seattle chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Reykjavik (KEF) – chosen by Cheapflights users on 47% of one-stop itineraries from Glasgow Intl Airport to Seattle on Cheapflights.
What’s the fastest stopover option from Glasgow Intl Airport to Seattle?
Shortest average travel time for one-stop one-way flights from Glasgow Intl Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 12h 33m.
What’s the fastest stopover option from Glasgow Intl Airport to Seattle?
Shortest average travel time for one-stop one-way flights from Glasgow Intl Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 12h 33m.
Which airport typically offers the quickest stopover for flights from Glasgow Intl Airport to Seattle?
Average stopover duration for one-stop one-way flights from Glasgow Intl Airport to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Paris (CDG) offer the fastest connection on this route, with an average stopover time of 1h 30m.
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 6 November 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus, andIcelandair from Glasgow Intl Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
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 5 different airlines.
How long is the flight from Glasgow Intl Airport to Seattle?
A quick flight from Glasgow Intl Airport to Seattle can take about 12h 25m. Icelandair provides one of the quickest options available for as low as £479. Airlines will cover a distance of 4445 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Glasgow Intl Airport to Seattle round-trip?
Our cheapest airline available from Glasgow Intl Airport to Seattle is British Airways. Our recent data shows that you can find tickets from as low as £435 on this airline. Additional options worth looking into are KLM and Lufthansa, starting at £453 and £475 round-trip. Users have found that British Airways is 32% cheaper than the other options available to this destination.
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, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to Seattle (average of £374). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £616). 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.
Browse through other flights departing from Glasgow Intl. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Top 5 airlines flying from Glasgow Intl to Seattle
Discover the top 5 airlines that operate flights from Glasgow Intl to Seattle. 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 858,174 searches. Data last updated 6 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Glasgow Intl to Seattle?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Glasgow Intl to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Seattle?
Cheapflights simply makes it quick and affordable to book flights from Glasgow Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Glasgow Intl to Seattle with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Glasgow Intl to Seattle, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Glasgow Intl to Seattle become cheaper?
Yes, Cheapflights offers price alerts on Glasgow Intl to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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