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Cheap flights from Ontario to Glasgow Intl Airport from £308

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 27/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GLA
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Ontario to Glasgow Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) 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

£542

One-way from

£308

Popular in

June

Cheapest in

November

Average price

£896
British Airways
  • British Airways
  • 16/8-28/8
  • 4 total stops
  • 37h 20m total
  • Ontario to Glasgow
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British Airways
  • British Airways
  • 27/7
  • 2 total stops
  • 18h 00m total
  • Ontario to Glasgow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£126 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 Ontario to Glasgow Intl

Cheapest flights from Ontario to Glasgow Intl
Explore the most affordable flight options available from Ontario to Glasgow Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Sat 16/808:14ONT - GLA
2 stops17h 06mBritish Airways
Thu 28/810:00GLA - ONT
2 stops20h 14mBritish Airways
Deal found 11/6£542
Tue 16/912:00ONT - GLA
2 stops20h 10mDelta
Tue 14/1006:00GLA - ONT
2 stops18h 14mDelta
Deal found 12/6£548
Fri 15/816:50ONT - GLA
2 stops15h 20mKLM
Wed 27/813:30GLA - ONT
2 stops17h 10mKLM
Deal found 11/6£656
Tue 5/813:15ONT - GLA
2 stops15h 45mMultiple Airlines
Sat 9/806:00GLA - ONT
2 stops17h 44mMultiple Airlines
Deal found 11/6£1,668

Cheapflights Fare Finder

Customise your flight search to find flights from Ontario 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 Ontario to Glasgow Intl Airport that are best for you.

Fly from

Ontario

Fly to

Glasgow Intl

Route

Depart

Return

Price

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sat 16/8

08:14-09:20

2 stops17h 06m

Glasgow Intl

Thu 28/8

10:00-22:14

2 stops20h 14m

£542

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Tue 16/9

12:00-16:10

2 stops20h 10m

Glasgow Intl

Tue 14/10

06:00-16:14

2 stops18h 14m

£548

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Fri 15/8

16:50-16:10

2 stops15h 20m

Glasgow Intl

Wed 27/8

13:30-22:40

2 stops17h 10m

£656

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Tue 5/8

13:15-13:00

2 stops15h 45m

Glasgow Intl

Sat 9/8

06:00-15:44

2 stops17h 44m

£1,668

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sun 27/7

16:45-18:45

2 stops18h 00m

£308

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Wed 23/7

17:09-16:10

2 stops15h 01m

£333

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Tue 29/7

14:37-16:45

2 stops18h 08m

£362

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Thu 24/7

13:15-13:00

2 stops15h 45m

£369

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Tue 29/7

16:45-16:45

2 stops16h 00m

£371

OntarioGlasgow

ONT - GLA

ONTGLA

Ontario

Sat 12/7

15:45-13:25

2 stops13h 40m

£2,829

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Best time to book a flight from Ontario to Glasgow Intl

Have a flexible travel schedule? Discover the best time to fly to Glasgow Intl from Ontario 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 Ontario to Glasgow Intl Airport

What is the cheapest month to book a flight from Ontario to Glasgow Intl Airport?

Currently, April is the cheapest month in which you can book a flight from Ontario to Glasgow Intl Airport (average of £97). Flying from Ontario 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.

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.
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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.
Iberia
7.0
Good
2,776 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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.
British Airways
6.6
Okay
7,011 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

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 Ontario 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 Ontario to Glasgow Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Glasgow Intl. 0 airlines have flights from Ontario to Glasgow Intl on a regular basis. Booking flights from Ontario to Glasgow Intl should not be difficult; the airport handles an average of 0 outbound flights to Glasgow Intl per day.

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

    Currently priced at £542, British Airways will fly you from Ontario to Glasgow Intl Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and KLM - these airlines can fly you to your destination from £548 and £656, respectively.

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

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as £308. Users have also found prices from £333 and £362 on Delta and Iberia, respectively.

  • Can I find deals for flights from Ontario to Glasgow Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Glasgow Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Glasgow Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Glasgow Intl.

  • Can I find deals for business class flights from Ontario to Glasgow Intl?

    Yes. Cheapflights offers flight deals from Ontario 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 Ontario to Glasgow Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Glasgow Intl Airport (average of £97). Flying from Ontario 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Paisley
Dunoon
Largs
Renfrew
Kilmarnock
East Kilbride
Dumbarton
Arrochar
Inveraray
Ballachulish
Rothesay
Clydebank
Alexandria
Tarbert
Balloch

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Can Cheapflights find flights from Ontario to Glasgow Intl with no change fees?

Need flexible booking options for your flight to Glasgow Intl from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Glasgow Intl become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Glasgow Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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