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Cheap flights from Seattle to Glasgow Intl Airport from £142

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — GLA
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Glasgow Intl are usually found in November or February, booked 62 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 29 April 2025.

Round-trip from

£478

One-way from

£142

Popular in

June

Cheapest in

November

Average price

£583
Icelandair
  • Icelandair
  • 30/9-14/10
  • 2 total stops
  • 28h 00m total
  • Seattle to Glasgow
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Icelandair
  • Icelandair
  • 12/6
  • 1 total stop
  • 13h 40m total
  • Seattle to Glasgow
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£149 potential increase over avg. return price).
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Cheapest flight prices on average. 7% potential price decrease (£34 potential savings vs. average return price).
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Average for round-trip flights in April 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 29 April 2025.

Tue 30/915:45SEA - GLA
1 stop13h 40mIcelandair
Tue 14/1014:20GLA - SEA
1 stop14h 20mIcelandair
Deal found 28/4£478
Mon 19/513:30SEA - GLA
1 stop12h 35mMultiple Airlines
Thu 29/507:00GLA - SEA
1 stop12h 35mMultiple Airlines
Deal found 27/4£558
Wed 24/920:20SEA - GLA
1 stop14h 20mBritish Airways
Fri 3/1007:00GLA - SEA
1 stop12h 35mBritish Airways
Deal found 28/4£558
Wed 17/915:13SEA - GLA
2 stops16h 22mAmerican Airlines
Fri 3/1012:00GLA - SEA
1 stop14h 20mAmerican Airlines
Deal found 28/4£561
Mon 29/914:20SEA - GLA
1 stop14h 00mLufthansa
Fri 10/1006:10GLA - SEA
2 stops16h 06mLufthansa
Deal found 28/4£573
Fri 19/917:40SEA - GLA
1 stop32h 05mKLM
Fri 3/1006:00GLA - SEA
1 stop13h 50mKLM
Deal found 29/4£619
Fri 19/911:59SEA - GLA
2 stops20h 11mDelta
Fri 3/1006:00GLA - SEA
2 stops18h 59mDelta
Deal found 29/4£630
Tue 4/1101:24SEA - GLA
2 stops34h 16mAer Lingus
Tue 11/1120:10GLA - SEA
1 stop30h 05mAer Lingus
Deal found 28/4£724

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 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 30/9

15:45-13:25

1 stop13h 40m

Glasgow Intl

Tue 14/10

14:20-20:40

1 stop14h 20m

£478

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 19/5

13:30-10:05

1 stop12h 35m

Glasgow Intl

Thu 29/5

07:00-11:35

1 stop12h 35m

£558

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 24/9

20:20-18:40

1 stop14h 20m

Glasgow Intl

Fri 3/10

07:00-11:35

1 stop12h 35m

£558

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 17/9

15:13-15:35

2 stops16h 22m

Glasgow Intl

Fri 3/10

12:00-18:20

1 stop14h 20m

£561

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Mon 29/9

14:20-12:20

1 stop14h 00m

Glasgow Intl

Fri 10/10

06:10-14:16

2 stops16h 06m

£573

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 19/9

17:40-09:45

1 stop32h 05m

Glasgow Intl

Fri 3/10

06:00-11:50

1 stop13h 50m

£619

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 19/9

11:59-16:10

2 stops20h 11m

Glasgow Intl

Fri 3/10

06:00-16:59

2 stops18h 59m

£630

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sun 18/5

06:14-19:40

2 stops29h 26m

Glasgow Intl

Mon 16/6

09:50-11:10

2 stops33h 20m

£746

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Thu 12/6

15:45-13:25

1 stop13h 40m

£142

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Thu 11/9

19:00-23:30

3 stops20h 30m

£240

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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 25 April 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 62 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 29 April 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 29 April 2025.
Get a feel of what it's like to fly with Delta, KLM and American Airlines 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
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,929 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Icelandair
7.0
Good
487 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,076 reviews
Delta
8.0
Very Good
7,929 reviews
Check prices

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 Icelandair. Our recent data shows that you can find tickets from as low as £478 on this airline. Additional options worth looking into are British Airways and American Airlines, starting at £558 and £561 round-trip. Icelandair is currently priced 28% 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 £142. Users have also found prices from £258 and £343 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 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 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£440Average£574FlexibilityNo 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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