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Cheap flights from Seattle to Glasgow Intl Airport from £288

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Glasgow Intl are usually found in November or March, booked 36 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Find 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 24 October 2025.

Tue 2/1214:35SEA - GLA
2 stops21h 45mMultiple Airlines
Tue 9/1208:25GLA - SEA
2 stops16h 35mMultiple Airlines
Deal found 22/10£352
Mon 1/1214:35SEA - GLA
1 stop11h 20mIcelandair
Thu 11/1212:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 21/10£379
Tue 4/1114:35SEA - GLA
1 stop11h 20mIcelandair
Thu 4/1212:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 21/10£397
Tue 2/1214:00SEA - GLA
1 stop14h 05mLufthansa
Tue 9/1206:00GLA - SEA
1 stop14h 10mLufthansa
Deal found 22/10£442
Tue 2/1207:10SEA - GLA
2 stops21h 35mDelta
Tue 9/1206:05GLA - SEA
1 stop13h 45mDelta
Deal found 22/10£457
Sun 7/1215:05SEA - GLA
1 stop17h 30mVirgin Atlantic
Sun 14/1217:20GLA - SEA
2 stops33h 06mVirgin Atlantic
Deal found 23/10£472
Thu 13/1114:35SEA - GLA
1 stop11h 20mIcelandair
Thu 20/1112:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 23/10£531
Wed 29/1011:43SEA - GLA
2 stops18h 02mKLM
Wed 19/1106:05GLA - SEA
1 stop13h 40mKLM
Deal found 22/10£535
Thu 30/1015:00SEA - GLA
1 stop14h 05mLufthansa
Sat 8/1106:00GLA - SEA
1 stop14h 10mLufthansa
Deal found 22/10£538

Cheap 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 24 October 2025.

Round-trip from

£352

One-way from

£295

Popular in

July

Cheapest in

November

Average price

£541
2/12-9/12
  • 2/12-9/12
  • 4 total stops
  • 38h 20m total
  • Seattle to Glasgow
Search Deals
Icelandair
  • Icelandair
  • 20/1
  • 1 total stop
  • 11h 20m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£115 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 24 October 2025.
Use the filters below to find and compare flights from Seattle to Glasgow Intl Airport that are best for you.

Fly from

Seattle

Fly to

Glasgow Intl

Route

Depart

Return

Price

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 2/12

14:35-20:20

2 stops21h 45m

Glasgow Intl

Tue 9/12

08:25-17:00

2 stops16h 35m

£352

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 4/11

14:35-09:55

1 stop11h 20m

Glasgow Intl

Tue 18/11

12:35-17:00

1 stop12h 25m

£379

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 1/12

14:35-09:55

1 stop11h 20m

Glasgow Intl

Thu 11/12

12:35-17:00

1 stop12h 25m

£379

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 20/1

14:35-09:55

1 stop11h 20m

Glasgow Intl

Sat 31/1

12:35-17:00

1 stop12h 25m

£379

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Thu 5/3

14:35-09:55

1 stop11h 20m

Glasgow Intl

Mon 23/3

12:35-18:00

1 stop12h 25m

£379

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 1/3

14:35-09:55

1 stop11h 20m

Glasgow Intl

Thu 5/3

12:35-17:00

1 stop12h 25m

£387

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 8/3

15:00-09:55

1 stop11h 55m

Glasgow Intl

Thu 12/3

12:35-18:00

1 stop12h 25m

£387

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 8/4

19:00-13:25

1 stop10h 25m

Glasgow Intl

Tue 28/4

14:20-17:50

1 stop11h 30m

£448

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 19/4

15:45-13:25

1 stop13h 40m

Glasgow Intl

Sun 26/4

14:20-20:45

1 stop14h 25m

£474

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 7/12

07:35-12:45

2 stops21h 10m

Glasgow Intl

Sun 14/12

06:05-20:35

2 stops22h 30m

£485

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 19 results
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?

Use this chart to determine the optimal time to book a return flight from Seattle to Glasgow Intl. Price data was last updated on 17 October 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Glasgow Intl Airport, you should look to book at least 36 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, March is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £403). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £616). 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 SEA to GLA?

Find hourly flight availability from Seattle to Glasgow Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 24 October 2025.

It’s typically best to fly out from Seattle to Glasgow Intl Airport in the morning. Doing so could potentially save you 59% on the flight price compared to flying in the evening, which is usually more expensive.

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 24 October 2025.
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
7.1
Good
561 reviews
Check prices

Comfort

6.9

Entertainment

7.0

Boarding

7.2

Crew

8.1

Food

6.2

Overall

7.1

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
7.1
Good
561 reviews
Icelandair
7.1
Good
561 reviews
Check prices

Comfort

6.9

Entertainment

7.0

Boarding

7.2

Crew

8.1

Food

6.2

Overall

7.1

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 11h 20m. Icelandair provides one of the quickest options available for as low as £379. 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 £446 on this airline. Icelandair is currently priced 27% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Seattle to Glasgow Intl Airport one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as £288. Users have also found prices from £323 and £333 on British Airways and American Airlines, respectively.

  • 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, March is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £403). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £616). 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
Largs
Renfrew
Kilmarnock
Dumbarton
Arrochar
Clydebank
East Kilbride
Inveraray
Rothesay
Ballachulish
Alexandria
Tarbert
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 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£446Average£535FlexibilityNo 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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