Cheap flights from Glasgow Intl Airport to Seattle from £264
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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
4 Jan — 11 Jan1
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
Cheap 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 5 December 2025.
Sun 14/1212:35GLA - SEA
2 stops16h 14mIcelandair
Fri 9/114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 3/12£831
Sun 14/1212:35GLA - SEA
2 stops18h 10mMultiple Airlines
Fri 9/110:00SEA - GLA
2 stops15h 55mMultiple Airlines
Deal found 3/12£839
Sun 14/1215:55GLA - SEA
2 stops37h 18mIberia
Fri 9/118:50SEA - GLA
1 stop12h 20mIberia
Deal found 4/12£937
Fri 26/1206:05GLA - SEA
2 stops20h 31mDelta
Sat 3/107:10SEA - GLA
2 stops18h 55mDelta
Deal found 4/12£981
Sun 14/1208:20GLA - SEA
1 stop18h 00mBritish Airways
Fri 9/118:50SEA - GLA
1 stop12h 20mBritish Airways
Deal found 4/12£1,059
Fri 26/1212:35GLA - SEA
1 stop12h 25mMultiple Airlines
Sat 3/119:28SEA - GLA
2 stops55h 12mMultiple Airlines
Deal found 4/12£1,135
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 5 December 2025.
Fri 16/109:40GLA - SEA
1 stop15h 15mBritish Airways
Mon 19/118:50SEA - GLA
1 stop15h 25mBritish Airways
Deal found 2/12£638
Fri 26/1206:05GLA - SEA
2 stops20h 31mDelta
Sat 3/107:10SEA - GLA
2 stops18h 55mDelta
Deal found 4/12£981
Fri 26/1212:35GLA - SEA
1 stop12h 25mMultiple Airlines
Sat 3/119:28SEA - GLA
2 stops55h 12mMultiple Airlines
Deal found 4/12£1,135
Sun 1/311:40GLA - SEA
2 stops19h 49mBritish Airways
Sun 8/313:37SEA - GLA
2 stops20h 03mBritish Airways
Deal found 4/12£701
Thu 1/106:35GLA - SEA
2 stops22h 24mBritish Airways
Thu 22/114:04SEA - GLA
2 stops18h 36mBritish Airways
Deal found 3/12£1,229
Last-minute flights from Glasgow Intl to Seattle
Discover last-minute flight deals from Glasgow Intl to Seattle. Data last updated 5 December 2025 and is based on user searches.
Sun 14/1212:35GLA - SEA
2 stops16h 14mIcelandair
Fri 9/114:35SEA - GLA
1 stop11h 20mIcelandair
Deal found 3/12£831
Sun 14/1212:35GLA - SEA
2 stops18h 10mMultiple Airlines
Fri 9/110:00SEA - GLA
2 stops15h 55mMultiple Airlines
Deal found 3/12£839
Sun 14/1215:55GLA - SEA
2 stops37h 18mIberia
Fri 9/118:50SEA - GLA
1 stop12h 20mIberia
Deal found 4/12£937
Sun 14/1208:20GLA - SEA
1 stop18h 00mBritish Airways
Fri 9/118:50SEA - GLA
1 stop12h 20mBritish Airways
Deal found 4/12£1,059
Fri 26/1206:05GLA - SEA
2 stops20h 31mDelta
Sat 3/107:10SEA - GLA
2 stops18h 55mDelta
Deal found 4/12£981
Fri 26/1212:35GLA - SEA
1 stop12h 25mMultiple Airlines
Sat 3/119:28SEA - GLA
2 stops55h 12mMultiple Airlines
Deal found 4/12£1,135
Thu 1/106:35GLA - SEA
2 stops22h 24mBritish Airways
Thu 22/114:04SEA - GLA
2 stops18h 36mBritish Airways
Deal found 3/12£1,229
Fri 16/110:40GLA - SEA
1 stop14h 15mBritish Airways
Mon 19/108:04SEA - GLA
2 stops24h 31mBritish Airways
Deal found 2/12£638
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 5 December 2025.
Wed 4/313:40GLA - SEA
3 stops54h 50mMultiple Airlines
Deal found 4/12£264
Fri 3/421:05GLA - SEA
3 stops55h 30mMultiple Airlines
Deal found 4/12£313
Sat 28/222:30GLA - SEA
3 stops43h 21mMultiple Airlines
Deal found 4/12£321
Sun 15/320:50GLA - SEA
3 stops58h 52mMultiple Airlines
Deal found 4/12£332
Wed 4/312:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 4/12£360
Wed 1/415:40GLA - SEA
3 stops54h 39mMultiple Airlines
Deal found 4/12£378
Tue 3/312:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 4/12£379
Mon 30/321:05GLA - SEA
3 stops45h 23mMultiple Airlines
Deal found 4/12£380
Find 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 5 December 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 5 December 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
Fri 16/1
09:40-16:55
1 stop15h 15m
Seattle/Tacoma Intl
Mon 19/1
18:50-18:15
1 stop15h 25m
£638
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 1/3
11:40-23:29
2 stops19h 49m
Seattle/Tacoma Intl
Sun 8/3
13:37-16:40
2 stops20h 03m
£701
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Fri 26/12
06:05-18:36
2 stops20h 31m
Seattle/Tacoma Intl
Sat 3/1
07:10-10:05
2 stops18h 55m
£981
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Fri 26/12
12:35-17:00
1 stop12h 25m
Seattle/Tacoma Intl
Sat 3/1
19:28-10:40
2 stops55h 12m
£1,135
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 1/1
06:35-20:59
2 stops22h 24m
Seattle/Tacoma Intl
Thu 22/1
14:04-16:40
2 stops18h 36m
£1,229
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Wed 4/3
13:40-12:30
3 stops54h 50m
£264
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Fri 3/4
21:05-20:35
3 stops55h 30m
£313
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sat 28/2
22:30-09:51
3 stops43h 21m
£321
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Wed 1/4
15:40-14:19
3 stops54h 39m
£378
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 3/3
12:35-17:00
1 stop12h 25m
£379
Flights are sorted by cheapest return flights first.
Deals found on 4/12
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 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 28 November 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 £366). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £600). 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 cheapest stopover airport for flights from Glasgow Intl Airport to Seattle?
Average return fare for one-stop flights from Glasgow Intl Airport to Seattle, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Frankfurt am Main (FRA) is the most affordable one-stop option, with an average return flight price of £546.
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 31m.
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 Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 50m.
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 5 December 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.
Not literally sitting in the very last row in the middle
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 15h 15m. British Airways provides one of the quickest options available for as low as £638. Airlines will cover a distance of 4445 mi.
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 £425 on this airline. Additional options worth looking into are KLM and Lufthansa, starting at £443 and £464 round-trip. Users have found that British Airways is 31% 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 £366). Flying from Glasgow Intl Airport to Seattle in December is currently the most expensive (average of £600). 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 5 December 2025.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 December 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 5 December 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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