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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — SEA
27 Dec — 3 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Glasgow 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 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 27 November 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 27 November 2025.
Sun 14/1206:35GLA - SEA
2 stops23h 15mBritish Airways
Fri 9/118:50SEA - GLA
1 stop12h 20mBritish Airways
Deal found 25/11£627
Thu 18/1212:00GLA - SEA
2 stops18h 10mMultiple Airlines
Fri 26/1220:05SEA - GLA
1 stop27h 45mMultiple Airlines
Deal found 25/11£1,021
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 27 November 2025.
Tue 26/509:15GLA - SEA
1 stop34h 20mAmerican Airlines
Tue 14/713:30SEA - GLA
2 stops21h 20mAmerican Airlines
Deal found 26/11£530
Mon 25/505:50GLA - SEA
1 stop13h 45mBritish Airways
Tue 14/713:35SEA - GLA
1 stop14h 35mBritish Airways
Deal found 26/11£533
Mon 25/510:35GLA - SEA
1 stop15h 50mBritish Airways
Thu 16/713:35SEA - GLA
1 stop12h 05mBritish Airways
Deal found 26/11£533
Thu 29/109:55GLA - SEA
1 stop15h 00mAmerican Airlines
Mon 2/218:50SEA - GLA
1 stop13h 45mAmerican Airlines
Deal found 24/11£533
Sun 24/512:05GLA - SEA
1 stop31h 30mBritish Airways
Thu 16/713:35SEA - GLA
1 stop12h 40mBritish Airways
Deal found 26/11£533
Sun 24/514:40GLA - SEA
1 stop28h 55mBritish Airways
Mon 13/713:35SEA - GLA
1 stop12h 30mBritish Airways
Deal found 26/11£533
Sun 24/515:40GLA - SEA
1 stop27h 55mBritish Airways
Tue 14/713:35SEA - GLA
1 stop12h 05mBritish Airways
Deal found 26/11£533
Mon 25/510:35GLA - SEA
2 stops21h 35mBritish Airways
Mon 13/720:20SEA - GLA
1 stop14h 10mBritish Airways
Deal found 26/11£536
Last-minute flights from Glasgow to Seattle
Discover last-minute flight deals from Glasgow to Seattle. Data last updated 27 November 2025 and is based on user searches.
Sun 14/1206:35GLA - SEA
2 stops23h 15mBritish Airways
Fri 9/118:50SEA - GLA
1 stop12h 20mBritish Airways
Deal found 25/11£627
Thu 18/1212:00GLA - SEA
2 stops18h 10mMultiple Airlines
Fri 26/1220:05SEA - GLA
1 stop27h 45mMultiple Airlines
Deal found 25/11£1,021
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 27 November 2025.
Sun 1/309:55GLA - SEA
2 stops43h 00mMultiple Airlines
Deal found 26/11£293
Mon 27/414:20GLA - SEA
1 stop11h 30mIcelandair
Deal found 26/11£369
Sun 18/112:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 26/11£381
Sun 17/520:25GLA - SEA
1 stop23h 10mMultiple Airlines
Deal found 25/11£483
Sun 17/520:25GLA - SEA
2 stops34h 40mBritish Airways
Deal found 25/11£494
Mon 27/408:25GLA - SEA
2 stops16h 34mBritish Airways
Deal found 26/11£532
Sun 18/110:20GLA - SEA
2 stops16h 23mMultiple Airlines
Deal found 26/11£538
Sun 3/512:05GLA - SEA
1 stop31h 30mFinnair
Deal found 26/11£1,038
Sun 3/520:25GLA - SEA
2 stops32h 14mBritish Airways
Deal found 25/11£1,076
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 27 November 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 26/5
09:15-11:35
1 stop34h 20m
Seattle/Tacoma Intl
Tue 14/7
13:30-18:50
2 stops21h 20m
£530
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Mon 25/5
05:50-11:35
1 stop13h 45m
Seattle/Tacoma Intl
Tue 14/7
13:35-12:10
1 stop14h 35m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Mon 25/5
10:35-18:25
1 stop15h 50m
Seattle/Tacoma Intl
Thu 16/7
13:35-09:40
1 stop12h 05m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 24/5
12:05-11:35
1 stop31h 30m
Seattle/Tacoma Intl
Thu 16/7
13:35-10:15
1 stop12h 40m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 24/5
14:40-11:35
1 stop28h 55m
Seattle/Tacoma Intl
Mon 13/7
13:35-10:05
1 stop12h 30m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 24/5
15:40-11:35
1 stop27h 55m
Seattle/Tacoma Intl
Tue 14/7
13:35-09:40
1 stop12h 05m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Thu 29/1
09:55-16:55
1 stop15h 00m
Seattle/Tacoma Intl
Mon 2/2
18:50-16:35
1 stop13h 45m
£533
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Mon 25/5
10:35-00:10
2 stops21h 35m
Seattle/Tacoma Intl
Mon 13/7
20:20-18:30
1 stop14h 10m
£536
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Sun 1/3
09:55-20:55
2 stops43h 00m
£293
GlasgowSeattle
GLA - SEA
GLASEA
Glasgow Intl
Mon 27/4
14:20-17:50
1 stop11h 30m
£369
Flights are sorted by cheapest return flights first.
Deals found on 26/11
Showing 1-10 of 17 results
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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 21 November 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, March is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £367). Flying from Glasgow to Seattle in December is currently the most expensive (average of £607). 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 27 November 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 2% 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 27 November 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.
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 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 13h 45m. Fly via American Airlines or British Airways to get the fastest option. There are 4445 mi between Glasgow and Seattle. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Glasgow to Seattle round-trip?
Cheapflights users have booked flights from Glasgow to Seattle round-trip from £430. Other airlines that can offer you cheap pricing are KLM, from £447, and Lufthansa, from £469. These flights start at 32% 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, March is the cheapest month in which you can book a flight from Glasgow to Seattle (average of £367). Flying from Glasgow to Seattle in December is currently the most expensive (average of £607). 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 27 November 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 27 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 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.
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