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Cheap flights from Seattle to Glasgow Intl Airport from £190

SEA — GLA
24 Oct — 31 Oct1
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

Fri 6/1114:35 -
1 stop11h 20m
Fri 13/1111:35 -
1 stop13h 25m
Deal found 22/9£429
Fri 16/1019:00 -
1 stop10h 25m
Tue 24/1111:55 -
1 stop13h 05m
Deal found 20/9£434
Tue 1/1214:35 -
1 stop11h 20m
Wed 9/1211:35 -
1 stop13h 25m
Deal found 23/9£443
Sun 18/1015:40 -
1 stop13h 45m
Tue 27/1011:55 -
1 stop13h 05m
Deal found 21/9£459
Sun 29/1114:35 -
1 stop11h 20m
Sat 12/1211:55 -
1 stop13h 05m
Deal found 23/9£460
Tue 3/1114:35 -
1 stop11h 20m
Tue 10/1111:55 -
1 stop13h 05m
Deal found 19/9£462
Sat 17/1019:00 -
1 stop10h 25m
Sat 24/1014:20 -
1 stop14h 15m
Deal found 21/9£495
Sat 17/1019:00 -
1 stop10h 25m
Tue 27/1011:55 -
1 stop13h 05m
Deal found 21/9£497
Wed 4/1107:45 -
2 stops27h 20m
Wed 11/1119:35 -
2 stops24h 25m
Deal found 20/9£523
Tue 20/1013:30 -
1 stop15h 45m
Mon 9/1120:15 -
1 stop23h 10m
Deal found 21/9£552
Wed 2/1218:45 -
1 stop13h 55m
Tue 8/1208:45 -
1 stop16h 05m
Deal found 23/9£553
Fri 2/1005:50 -
2 stops23h 45m
Fri 9/1007:25 -
2 stops34h 40m
Deal found 19/9£556

Find flight deals from Seattle to Glasgow Intl

Round-trip from

£429

One-way from

£190

Popular in

June

Cheapest in

February

Average price

£736
Icelandair
  • Icelandair
  • 6/11-13/11
  • 2 total stops
  • 24h 45m total
  • Seattle to Glasgow
Search Deals
Icelandair
  • Icelandair
  • 13/10-31/12
  • 1 total stop
  • 10h 25m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£118 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Glasgow Intl Airport that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest return flight

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Sat 3/10

15:55-18:55

2 stops43h 00m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£215

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 14/10

15:40-07:00

3 stops31h 20m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£238
Fastest return journey

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Mon 22/3

19:45-16:25

1 stop13h 40m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£254

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 17/3

09:50-16:30

2 stops23h 40m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£317

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Tue 13/10

19:00-20:50

2 stops17h 50m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£318

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 14/10

06:12-08:05

2 stops17h 53m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£341

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Sat 3/10

22:40-08:25

2 stops25h 45m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£394

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Sat 3/10

23:13-10:10

2 stops26h 57m

Glasgow Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£431

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Tue 23/2

06:12-10:50

2 stops20h 38m

Glasgow Intl

Sun 28/2

10:10-16:50

1 stop14h 40m

£604

SeattleGlasgow

SEA Seattle/Tacoma Intl - GLA Glasgow Intl

SEAGLA

Seattle/Tacoma Intl

Wed 14/10

10:31-12:30

2 stops17h 59m

Glasgow Intl

Wed 16/12

10:55-16:50

1 stop13h 55m

£626

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Showing 1-10 of 16 resultsSorted by cheapest first
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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

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 4 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 £538). Flying from Seattle to Glasgow Intl Airport in June is currently the most expensive (average of £949). 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 £581 and £803 in November.
The cheapest return price found within the last 5 days was £429 on Icelandair (6 Nov–13 Nov).

Reviews of airlines servicing Glasgow Intl

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
749 reviews
Check prices

Food

6.1

Entertainment

6.9

Overall

6.9

Crew

8.0

Comfort

6.9

Boarding

7.2

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
749 reviews
Icelandair
6.9
Okay
749 reviews
Check prices

Food

6.1

Entertainment

6.9

Overall

6.9

Crew

8.0

Comfort

6.9

Boarding

7.2

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

  • 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 20h 38m. British Airways provides one of the quickest options available for as low as £604. 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 £429 on this airline. Icelandair is currently priced 35% 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 £538). Flying from Seattle to Glasgow Intl Airport in June is currently the most expensive (average of £949). 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
East Kilbride
Arrochar
Dunoon
Helensburgh
Largs
Clydebank
Renfrew
Inveraray
Rothesay
Alexandria
Glencoe

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Glasgow Intl

Portland to Glasgow Intl flights
Spokane to Glasgow Intl flights

Top airline flying from Seattle to Glasgow Intl

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£429Average£550FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

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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