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Cheap flights from Seattle to Glasgow Intl Airport from £235

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
29 May — 5 Jun1
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 29 April 2026.

Sun 11/1019:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Tue 20/1014:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Deal found 28/4£597
Wed 10/605:45
SEA
-
GLA
3 stops19h 55m
Multiple Airlines
Wed 17/607:45
GLA
-
SEA
3 stops33h 55m
Multiple Airlines
Deal found 26/4£602
Mon 5/1015:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Thu 15/1014:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Deal found 27/4£608
Wed 9/915:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Wed 16/914:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 26/4£609
Thu 27/819:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Fri 4/914:20
GLA
-
SEA
1 stop11h 35m
Icelandair
Deal found 28/4£610
Sun 6/915:40
SEA
-
GLA
1 stop13h 45m
Icelandair
Fri 18/914:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 27/4£611
Mon 13/710:30
SEA
-
GLA
2 stops36h 20m
Multiple Airlines
Wed 22/708:35
GLA
-
SEA
2 stops18h 10m
Multiple Airlines
Deal found 26/4£614
Wed 26/823:25
SEA
-
GLA
1 stop30h 00m
Icelandair
Wed 9/914:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 28/4£614
Thu 6/823:25
SEA
-
GLA
1 stop30h 00m
Icelandair
Wed 19/814:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 28/4£615
Mon 3/819:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Thu 20/814:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 28/4£618
Sun 16/819:00
SEA
-
GLA
1 stop10h 25m
Icelandair
Thu 20/814:20
GLA
-
SEA
1 stop14h 20m
Icelandair
Deal found 28/4£619

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 29 April 2026.

Round-trip from

£597

One-way from

£235

Popular in

July

Cheapest in

November

Average price

£579
Icelandair
  • Icelandair
  • 11/10-20/10
  • 2 total stops
  • 22h 00m total
  • Seattle to Glasgow
Search Deals
15/8
  • 15/8
  • 3 total stops
  • 24h 15m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£97 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 29 April 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

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 27/9

23:50-10:10

2 stops26h 20m

Glasgow Intl

Thu 1/10

14:00-10:01

2 stops28h 01m

£670

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 5/9

23:00-10:10

1 stop27h 10m

Glasgow Intl

Thu 17/9

14:00-09:35

2 stops27h 35m

£674

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 1/9

22:47-10:10

2 stops27h 23m

Glasgow Intl

Tue 15/9

14:00-10:03

2 stops28h 03m

£679

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 1/9

22:47-10:10

2 stops27h 23m

Glasgow Intl

Thu 10/9

14:00-10:03

2 stops28h 03m

£701

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Thu 6/8

17:04-10:10

3 stops33h 06m

Glasgow Intl

Wed 19/8

14:00-10:03

2 stops28h 03m

£707

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 20/7

08:56-10:10

2 stops17h 14m

Glasgow Intl

Sat 15/8

14:00-23:45

1 stop17h 45m

£768

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 31/5

13:45-16:10

1 stop18h 25m

Glasgow Intl

Wed 10/6

06:00-11:37

1 stop13h 37m

£805
Fastest return journey

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 26/5

09:10-08:25

2 stops15h 15m

Glasgow Intl

Fri 5/6

13:30-22:01

2 stops16h 31m

£816

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 26/5

09:10-08:25

2 stops15h 15m

Glasgow Intl

Fri 5/6

09:10-20:41

2 stops19h 31m

£816
Cheapest one-way

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 15/8

23:25-07:40

3 stops24h 15m

£235

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 18 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, November is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £483). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £752). 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?

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 29 April 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
7.0
Good
646 reviews
Check prices

Overall

7.0

Crew

8.0

Entertainment

6.9

Boarding

7.2

Comfort

6.9

Food

6.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

KEF - EWR

The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient
Icelandair
7.0
Good
646 reviews
Icelandair
7.0
Good
646 reviews
Check prices

Overall

7.0

Crew

8.0

Entertainment

6.9

Boarding

7.2

Comfort

6.9

Food

6.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

KEF - EWR

The airport in Reykjavik had too few seats at the departure gate. Otherwise the airport experience was fine. The flight was timely and smooth. The airplane was well maintained and staff pleasant and efficient

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 26h 20m. United Airlines provides one of the quickest options available for as low as £670. There are 4445 mi between Seattle and Glasgow Intl Airport.

  • 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 27% 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, November is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £483). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £752). 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
Dunoon
Kilmarnock
Dumbarton
Arrochar
Clydebank
East Kilbride
Largs
Renfrew
Inveraray
Rothesay
Alexandria
Tarbert
Balloch

Browse thousands of different options on Cheapflights for your next trip

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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 29 April 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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