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Cheap flights from Seattle to Glasgow Intl Airport from £211

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Glasgow Intl

Enter your travel dates to find the best prices.

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 12 August 2026.

Tue 6/1019:00 -
1 stop10h 25m
Wed 14/1014:20 -
1 stop11h 35m
Deal found 11/8£561
Tue 25/819:00 -
1 stop10h 25m
Tue 1/914:20 -
1 stop14h 20m
Deal found 11/8£572
Tue 1/1214:35 -
1 stop11h 20m
Sat 16/111:35 -
1 stop13h 25m
Deal found 9/8£574
Fri 2/1015:40 -
1 stop13h 45m
Tue 6/1014:20 -
1 stop14h 20m
Deal found 8/8£583
Sun 18/1019:00 -
1 stop10h 25m
Thu 22/1014:20 -
1 stop11h 35m
Deal found 10/8£591
Thu 20/823:25 -
1 stop30h 00m
Sat 19/1211:55 -
1 stop13h 05m
Deal found 8/8£597
Mon 16/1114:35 -
1 stop11h 20m
Fri 27/1111:35 -
1 stop13h 25m
Deal found 11/8£606
Sat 26/915:40 -
1 stop13h 45m
Sat 10/1021:35 -
2 stops31h 05m
Deal found 11/8£624
Wed 2/915:40 -
1 stop13h 45m
Sun 6/914:20 -
1 stop29h 25m
Deal found 10/8£636
Sat 24/1019:10 -
1 stop10h 15m
Sun 1/1111:55 -
1 stop13h 05m
Deal found 11/8£640
Tue 22/919:00 -
1 stop10h 25m
Sun 27/907:30 -
2 stops34h 10m
Deal found 8/8£643

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 12 August 2026.

Round-trip from

£561

One-way from

£211

Popular in

June

Cheapest in

February

Average price

£704
Icelandair
  • Icelandair
  • 6/10-14/10
  • 2 total stops
  • 22h 00m total
  • Seattle to Glasgow
Search Deals
Icelandair
  • Icelandair
  • 9/12
  • 1 total stop
  • 11h 20m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£129 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 August 2026.
Use the filters below to find and compare flights from Seattle to Glasgow Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Sun 18/10

19:00-13:25

1 stop10h 25m

Glasgow Intl

Thu 22/10

14:20-17:55

1 stop11h 35m

£591

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Mon 30/11

07:30-14:30

2 stops23h 00m

Glasgow Intl

Mon 14/12

15:25-20:03

2 stops36h 38m

£675

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Tue 15/9

17:45-08:25

1 stop30h 40m

Glasgow Intl

Fri 25/9

09:10-16:35

1 stop15h 25m

£710

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 16/9

13:50-16:10

1 stop18h 20m

Glasgow Intl

Fri 25/9

06:00-16:35

1 stop18h 35m

£710

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Tue 15/9

08:40-10:10

2 stops17h 30m

Glasgow Intl

Fri 25/9

14:00-21:55

1 stop15h 55m

£712

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 16/9

06:32-10:10

2 stops19h 38m

Glasgow Intl

Fri 25/9

14:00-14:22

3 stops32h 22m

£714

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Thu 24/9

05:00-10:10

3 stops21h 10m

Glasgow Intl

Thu 1/10

14:00-11:27

2 stops29h 27m

£751

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 26/8

08:40-10:10

2 stops17h 30m

Glasgow Intl

Wed 23/9

14:00-14:53

3 stops32h 53m

£781

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Tue 25/8

23:00-10:10

2 stops27h 10m

Glasgow Intl

Tue 1/9

14:00-09:35

2 stops27h 35m

£782

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Thu 24/9

08:30-10:10

2 stops17h 40m

Glasgow Intl

Sat 3/10

14:00-22:36

1 stop16h 36m

£786

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 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 Seattle to Glasgow Intl Airport

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

To ensure you get the cheapest price possible for a flight from Seattle to Glasgow Intl Airport, you should look to book at least 25 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, February is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £486). Flying from Seattle to Glasgow Intl Airport in June 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.

How much does it cost for a return flight from Seattle to Glasgow Intl Airport?

Airfare is below average for this route at the moment.

Seattle to Glasgow Intl Airport flights typically cost between £624 and £817 in October.
The cheapest return price found within the last 5 days was £561 on Icelandair (6 Oct–14 Oct).

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 12 August 2026.
See what other customers who have flown with Icelandair from Seattle to Glasgow Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
6.9
Okay
728 reviews
Check prices

Food

6.1

Crew

8.0

Boarding

7.1

Entertainment

6.8

Overall

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
6.9
Okay
728 reviews
Icelandair
6.9
Okay
728 reviews
Check prices

Food

6.1

Crew

8.0

Boarding

7.1

Entertainment

6.8

Overall

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

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?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Glasgow Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to Glasgow Intl per day from 1 airline. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    A quick flight from Seattle to Glasgow Intl Airport can take about 10h 25m. Icelandair provides one of the quickest options available for as low as £591. There are 4445 mi between Seattle and Glasgow Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Glasgow Intl Airport round-trip?

    Our cheapest airline available from Seattle to Glasgow Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £422 on this airline. Icelandair is currently priced 34% below the average price you’ll pay for this route.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £486). Flying from Seattle to Glasgow Intl Airport in June 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.

See more FAQs

Travelling to a place near Glasgow Intl Airport?

Book flights to Glasgow Intl Airport if you plan to visit one of these locations
Paisley
Kilmarnock
Dunoon
Arrochar
Dumbarton
East Kilbride
Clydebank
Helensburgh
Largs
Renfrew
Inveraray
Rothesay
Alexandria
Glencoe
Balloch

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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.
Portland to Glasgow Intl flights
Spokane to Glasgow Intl flights

Top airline flying from Seattle to Glasgow Intl

Discover the top airline 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 858,174 searches. Data last updated 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£422Average£540FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

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 Seattle to Glasgow Intl?

When you search for this flight from Seattle to Glasgow Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Glasgow Intl?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Glasgow Intl 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 Seattle to Glasgow Intl with no change fees?

Certainly. Search results for flights to Glasgow Intl from Seattle 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 Seattle to Glasgow Intl become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Glasgow Intl 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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