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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
7 Sep — 14 Sep1
Return
1 adult
Economy
Cheapflights Tip: The best prices from Glasgow to Seattle/Tacoma Intl are usually found in February or September, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Monday
Cheap flight deals from Glasgow to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) 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 2 September 2025.
Explore the most affordable flight options available from Glasgow to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.
Tue 30/914:20GLA - SEA
1 stop14h 20mIcelandair
Tue 7/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£482
Thu 25/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 1/9£482
Thu 2/1014:20GLA - SEA
1 stop14h 20mIcelandair
Tue 7/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 31/8£499
Sat 27/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£505
Wed 1/1007:00GLA - SEA
1 stop12h 35mBritish Airways
Tue 7/1013:30SEA - GLA
1 stop12h 10mBritish Airways
Deal found 31/8£505
Wed 15/1008:25GLA - SEA
2 stops16h 34mMultiple Airlines
Wed 22/1014:20SEA - GLA
2 stops17h 05mMultiple Airlines
Deal found 31/8£508
Wed 1/1007:00GLA - SEA
1 stop12h 35mBritish Airways
Mon 6/1013:30SEA - GLA
1 stop12h 35mBritish Airways
Deal found 31/8£512
Tue 30/905:50GLA - SEA
2 stops19h 39mAmerican Airlines
Tue 7/1020:20SEA - GLA
1 stop14h 30mAmerican Airlines
Deal found 31/8£514
Wed 1/1006:00GLA - SEA
1 stop13h 50mDelta
Tue 7/1013:30SEA - GLA
2 stops18h 40mDelta
Deal found 31/8£518
Fri 10/1014:20GLA - SEA
1 stop14h 20mIcelandair
Sun 19/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 30/8£522
Fri 17/1014:20GLA - SEA
1 stop14h 20mIcelandair
Fri 24/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 2/9£523
Best flights from Glasgow to Seattle
Discover carefully curated flight deals from Glasgow to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 September 2025.
Tue 30/914:20GLA - SEA
1 stop14h 20mIcelandair
Tue 7/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£482
Wed 15/1008:25GLA - SEA
1 stop17h 25mMultiple Airlines
Wed 22/1019:35SEA - GLA
1 stop13h 30mMultiple Airlines
Deal found 31/8£482
Wed 1/1007:00GLA - SEA
1 stop12h 35mBritish Airways
Tue 7/1013:30SEA - GLA
1 stop12h 10mBritish Airways
Deal found 31/8£505
Thu 25/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 1/9£482
Thu 2/1014:20GLA - SEA
1 stop11h 30mIcelandair
Mon 6/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£499
Thu 2/1014:20GLA - SEA
1 stop11h 30mIcelandair
Wed 8/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£499
Thu 2/1014:20GLA - SEA
1 stop14h 20mIcelandair
Tue 7/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 31/8£499
Sat 27/914:20GLA - SEA
1 stop14h 20mIcelandair
Sat 4/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£505
Tue 30/914:20GLA - SEA
1 stop14h 20mIcelandair
Wed 8/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£505
Tue 30/914:20GLA - SEA
1 stop14h 20mIcelandair
Mon 6/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 31/8£505
Thu 25/914:20GLA - SEA
1 stop11h 30mIcelandair
Mon 6/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 1/9£505
Sat 27/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£505
Last-minute flights from Glasgow to Seattle
Discover last-minute flight deals from Glasgow to Seattle. Data last updated 2 September 2025 and is based on user searches.
Thu 25/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 1/9£482
Thu 25/906:00GLA - SEA
1 stop18h 05mDelta
Sun 5/1009:40SEA - GLA
2 stops22h 30mDelta
Deal found 1/9£583
Fri 26/914:20GLA - SEA
1 stop14h 20mIcelandair
Mon 6/1015:45SEA - GLA
1 stop13h 40mIcelandair
Deal found 1/9£584
Sat 27/914:20GLA - SEA
1 stop14h 20mIcelandair
Sun 5/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£505
Sat 27/905:50GLA - SEA
2 stops24h 14mAmerican Airlines
Sun 5/1020:51SEA - GLA
2 stops33h 49mAmerican Airlines
Deal found 31/8£559
Sat 27/905:50GLA - SEA
2 stops24h 14mAmerican Airlines
Sat 4/1020:20SEA - GLA
1 stop12h 35mAmerican Airlines
Deal found 31/8£579
Sun 28/920:25GLA - SEA
1 stop23h 10mBritish Airways
Sat 4/1013:35SEA - GLA
1 stop13h 40mBritish Airways
Deal found 31/8£570
Tue 30/914:20GLA - SEA
1 stop14h 20mIcelandair
Tue 7/1019:00SEA - GLA
1 stop10h 25mIcelandair
Deal found 31/8£482
Tue 30/905:50GLA - SEA
2 stops19h 39mAmerican Airlines
Tue 7/1020:20SEA - GLA
1 stop14h 30mAmerican Airlines
Deal found 31/8£514
Tue 30/908:55GLA - SEA
2 stops21h 06mDelta
Tue 7/1013:30SEA - GLA
2 stops18h 40mDelta
Deal found 31/8£528
One-way flights from Glasgow to Seattle
Search for one-way flight options from Glasgow to Seattle. Find affordable one-way fares based on user searches. Data last updated 2 September 2025.
Tue 30/921:55GLA - SEA
3 stops58h 35mMultiple Airlines
Deal found 2/9£353
Mon 29/908:35GLA - SEA
2 stops19h 54mMultiple Airlines
Deal found 2/9£368
Tue 30/920:10GLA - SEA
1 stop29h 40mAer Lingus
Deal found 2/9£479
Tue 28/1012:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 1/9£744
Sat 18/1014:20GLA - SEA
1 stop11h 30mIcelandair
Deal found 31/8£769
Mon 15/908:25GLA - SEA
2 stops19h 55mMultiple Airlines
Deal found 31/8£828
Tue 28/1008:20GLA - SEA
2 stops18h 53mMultiple Airlines
Deal found 1/9£889
Mon 15/914:20GLA - SEA
1 stop11h 30mIcelandair
Deal found 31/8£944
Mon 8/914:20GLA - SEA
1 stop11h 30mIcelandair
Deal found 31/8£1,015
Cheapflights Fare Finder
Customise your flight search to find flights from Glasgow 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 2 September 2025.
Use the filters below to find and compare flights from Glasgow to Seattle that are best for you.
Fly from
Glasgow
Fly to
Seattle
Route
Depart
Return
Price
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 30/9
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Tue 7/10
19:00-13:25
1 stop10h 25m
£482
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Wed 15/10
08:25-17:50
1 stop17h 25m
Seattle/Tacoma Intl
Wed 22/10
19:35-17:05
1 stop13h 30m
£482
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 25/9
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Sun 5/10
15:45-13:25
1 stop13h 40m
£482
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 2/10
14:20-17:50
1 stop11h 30m
Seattle/Tacoma Intl
Mon 6/10
19:00-13:25
1 stop10h 25m
£499
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 2/10
14:20-17:50
1 stop11h 30m
Seattle/Tacoma Intl
Wed 8/10
19:00-13:25
1 stop10h 25m
£499
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 2/10
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Tue 7/10
15:45-13:25
1 stop13h 40m
£499
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sat 27/9
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Sat 4/10
19:00-13:25
1 stop10h 25m
£505
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 30/9
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Wed 8/10
19:00-13:25
1 stop10h 25m
£505
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Tue 30/9
14:20-20:40
1 stop14h 20m
Seattle/Tacoma Intl
Mon 6/10
15:45-13:25
1 stop13h 40m
£505
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 25/9
14:20-17:50
1 stop11h 30m
Seattle/Tacoma Intl
Mon 6/10
15:45-13:25
1 stop13h 40m
£505
Flights are sorted by cheapest return flights first.
Deals found on 2/9
Showing 1-10 of 21 results
1
2
3
Best time to book a flight from Glasgow to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Glasgow 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 to Seattle
How far ahead should I book a flight from Glasgow to Seattle?
Use this chart to determine the optimal time to book a return flight from Glasgow to Seattle. Price data was last updated on 29 August 2025.
The price you pay for your flight from Glasgow to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Glasgow to Seattle?
Currently, January is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £622). Flying from Glasgow to Seattle in July is currently the most expensive (average of £946). 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 GLA to SEA?
Find hourly flight availability from Glasgow to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 September 2025.
One of the essential ways to save on airfare from Glasgow to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 9% on airfare.
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 2 September 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus, andIcelandair from Glasgow 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.
A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Related info for your journey
Find useful and relevant information for your journey from Glasgow 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?
Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Glasgow to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Glasgow; the airport handles an average of 0 inbound flights from Glasgow per day. You should also have plenty of airline options to choose from since 9 airlines have flights to the Seattle airport from Glasgow. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.
How long is the flight from Glasgow to Seattle?
There are many flights that can get you from Glasgow to Seattle in 14h 20m. Fly via Icelandair to get the fastest option. There are 4445 mi between Glasgow and Seattle.
What are the cheapest airlines flying from Glasgow to Seattle round-trip?
Cheapflights users have booked flights from Glasgow to Seattle round-trip from £428. Other airlines that can offer you cheap pricing are KLM, from £436, and Lufthansa, from £458. These flights start at 30% lower than the current average price 3 months from now.
Can I find deals for business class flights from Glasgow to Seattle?
Yes. Cheapflights offers flight deals from Glasgow 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 to Seattle?
Currently, January is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £622). Flying from Glasgow to Seattle in July is currently the most expensive (average of £946). 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.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 2 September 2025.
Discover the top 9 airlines that operate flights from Glasgow 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 2 September 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 to Seattle?
Cheapflights helps you search for flights from Glasgow to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Glasgow to Seattle?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Seattle.
Can Cheapflights find flights from Glasgow to Seattle with no change fees?
Certainly. Search results for flights to Seattle from Glasgow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Glasgow to Seattle become cheaper?
Yes, Cheapflights offers price alerts on Glasgow 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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.