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Cheap flights from Seattle to Glasgow Intl Airport from £213

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Glasgow Intl are usually found in November or February, booked 34 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 13 June 2025.

Round-trip from

£461

One-way from

£213

Popular in

June

Cheapest in

November

Average price

£922
6/8-15/8
  • 6/8-15/8
  • 2 total stops
  • 48h 50m total
  • Seattle to Glasgow
Search Deals
Icelandair
  • Icelandair
  • 22/9
  • 1 total stop
  • 13h 40m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£94 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 June 2025
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Find flight deals from Seattle to Glasgow Intl

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 13 June 2025.

Wed 6/819:35SEA - GLA
1 stop14h 40mMultiple Airlines
Fri 15/815:40GLA - SEA
1 stop34h 10mMultiple Airlines
Deal found 12/6£461
Wed 6/819:35SEA - GLA
1 stop16h 05mAer Lingus
Fri 15/808:35GLA - SEA
1 stop17h 15mAer Lingus
Deal found 12/6£472
Wed 8/1015:45SEA - GLA
1 stop13h 40mIcelandair
Wed 29/1012:35GLA - SEA
1 stop12h 25mIcelandair
Deal found 11/6£484
Mon 22/913:30SEA - GLA
1 stop15h 20mAmerican Airlines
Mon 6/1015:25GLA - SEA
1 stop27h 45mAmerican Airlines
Deal found 12/6£523
Mon 25/815:10SEA - GLA
2 stops24h 15mIberia
Wed 24/917:40GLA - SEA
1 stop25h 55mIberia
Deal found 10/6£534
Wed 10/912:15SEA - GLA
2 stops19h 55mDelta
Thu 18/906:00GLA - SEA
1 stop13h 45mDelta
Deal found 12/6£540
Mon 22/914:20SEA - GLA
1 stop14h 00mLufthansa
Fri 17/1006:10GLA - SEA
2 stops20h 26mLufthansa
Deal found 11/6£544
Mon 6/1020:20SEA - GLA
1 stop12h 05mBritish Airways
Mon 27/1017:30GLA - SEA
1 stop31h 25mBritish Airways
Deal found 11/6£546
Mon 25/817:40SEA - GLA
1 stop30h 30mKLM
Mon 15/906:00GLA - SEA
1 stop13h 45mKLM
Deal found 11/6£574

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 13 June 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

Wed 6/8

19:35-18:15

1 stop14h 40m

Glasgow Intl

Fri 15/8

15:40-17:50

1 stop34h 10m

£461

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 6/8

19:35-19:40

1 stop16h 05m

Glasgow Intl

Fri 15/8

08:35-17:50

1 stop17h 15m

£472

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 8/10

15:45-13:25

1 stop13h 40m

Glasgow Intl

Wed 29/10

12:35-18:00

1 stop12h 25m

£484

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 22/9

13:30-12:50

1 stop15h 20m

Glasgow Intl

Mon 6/10

15:25-11:10

1 stop27h 45m

£523

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 25/8

15:10-23:25

2 stops24h 15m

Glasgow Intl

Wed 24/9

17:40-11:35

1 stop25h 55m

£534

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 10/9

12:15-16:10

2 stops19h 55m

Glasgow Intl

Thu 18/9

06:00-11:45

1 stop13h 45m

£540

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 22/9

14:20-12:20

1 stop14h 00m

Glasgow Intl

Fri 17/10

06:10-18:36

2 stops20h 26m

£544

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 6/10

20:20-16:25

1 stop12h 05m

Glasgow Intl

Mon 27/10

17:30-17:55

1 stop31h 25m

£546

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 25/8

17:40-08:10

1 stop30h 30m

Glasgow Intl

Mon 15/9

06:00-11:45

1 stop13h 45m

£574

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 22/9

15:45-13:25

1 stop13h 40m

£213

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 15 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 9 June 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 34 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, April is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £97). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £119). 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 13 June 2025.

It’s typically best to fly out from Seattle to Glasgow Intl Airport in the morning. Doing so could potentially save you 10% on the flight price compared to flying at midday, which is usually more expensive.

Rainfall in Glasgow Intl by month

Plan your trip to Glasgow Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Glasgow Intl Airport ranges from 33.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. May is typically the driest time to visit Glasgow Intl Airport when rainfall is around 33.0 mm.

Temperature in Glasgow Intl by month

Plan your trip to Glasgow Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Glasgow Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 13 June 2025.
Get a feel of what it's like to fly with Delta, KLM and Virgin Atlantic from Seattle to Glasgow by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,118 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 2 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • What are the cheapest airlines flying from Seattle to Glasgow Intl Airport round-trip?

    Our cheapest airline available from Seattle to Glasgow Intl Airport is Aer Lingus. Our recent data shows that you can find tickets from as low as £472 on this airline. Additional options worth looking into are Icelandair and American Airlines, starting at £484 and £523 round-trip. Aer Lingus is currently priced 24% 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 £213. Users have also found prices from £408 and £533 on Aer Lingus and British Airways, 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, April is the cheapest month in which you can book a flight from Seattle to Glasgow Intl Airport (average of £97). Flying from Seattle to Glasgow Intl Airport in July is currently the most expensive (average of £119). 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 Seattle?

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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 2 airlines flying from Seattle to Glasgow Intl

Discover the top 2 airlines 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£411Average£518FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£433Average£564FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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