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Cheap flights from Glasgow Intl Airport to Ontario from £473

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — ONT
13 Mar — 20 Mar1
1 adult

Cheap flight deals from Glasgow Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow Intl (GLA) to Ontario (ONT). 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 8 March 2025.

Round-trip from

£651

Popular in

August

Cheapest in

February

Average price

£537
British Airways
  • British Airways
  • 24/6-8/7
  • 4 total stops
  • 36h 03m total
  • Glasgow to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Glasgow Intl to Ontario

Cheapest flights from Glasgow Intl to Ontario
Explore the most affordable flight options available from Glasgow Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 March 2025.

Tue 9/907:00GLA - ONT
2 stops18h 51mBritish Airways
Mon 22/917:09ONT - GLA
2 stops18h 31mBritish Airways
Deal found 7/3£473
Sun 8/606:00GLA - ONT
2 stops19h 22mDelta
Sun 15/617:05ONT - GLA
2 stops15h 05mDelta
Deal found 6/3£856
Tue 9/920:10GLA - ONT
3 stops32h 07mMultiple Airlines
Mon 22/905:45ONT - GLA
3 stops21h 45mMultiple Airlines
Deal found 7/3£985
Mon 30/613:30GLA - ONT
2 stops17h 13mKLM
Wed 16/717:05ONT - GLA
2 stops15h 05mKLM
Deal found 8/3£4,481

Find flights from Glasgow Intl to Ontario within your budget

Customise your flight search to find flights from Glasgow Intl to Ontario 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 8 March 2025.

Fly from

Glasgow Intl

Fly to

Ontario

Route

Depart

Return

Price

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Tue 24/6

10:55-23:03

2 stops20h 08m

Ontario

Tue 8/7

16:50-16:45

2 stops15h 55m

£651

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Sun 8/6

06:00-17:22

2 stops19h 22m

Ontario

Sun 15/6

17:05-16:10

2 stops15h 05m

£856

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Mon 30/6

13:30-22:43

2 stops17h 13m

Ontario

Wed 16/7

17:05-16:10

2 stops15h 05m

£4,481

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Tue 20/5

06:00-16:17

2 stops18h 17m

£1,202

Flights are sorted by cheapest return flights first.

Deals found on 7/3

Best time to book a flight from Glasgow Intl to Ontario

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

Travel insights for flights from Glasgow Intl to Ontario

Get recent, data-driven insights about flights from Glasgow Intl to Ontario including ideal travel times, pricing trends, and more.

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

Currently, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to Ontario (average of £516). Flying from Glasgow Intl Airport to Ontario in August is currently the most expensive (average of £827). 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 Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 8 March 2025.
Delta
8.0
Very Good
8,024 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,024 reviews
Delta
8.0
Very Good
8,024 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,322 reviews
Delta
8.0
Very Good
8,024 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

British Airways
6.6
Okay
6,730 reviews
Delta
8.0
Very Good
8,024 reviews
Check prices

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

8.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Ontario. 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 into for flights to Ontario from Glasgow Intl?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Glasgow Intl. On average, Ontario has 0 inbound flights from Glasgow Intl per day from 1 airline. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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

    According to our current data, British Airways (£651), Delta (£856), and KLM (£4,481) offers the cheapest pricing from Glasgow Intl Airport to Ontario.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Glasgow Intl Airport to Ontario (average of £516). Flying from Glasgow Intl Airport to Ontario in August is currently the most expensive (average of £827). 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

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Top airline flying from Glasgow Intl to Ontario

Discover the top airline that operate flights from Glasgow Intl to Ontario. 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 8 March 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£442Average£609FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Glasgow Intl to Ontario?

Cheapflights helps you search for flights from Glasgow Intl to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Glasgow Intl to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Glasgow Intl to Ontario for you. Better yet — we are completely free to use.

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

Yes, we can. To see specific flights from Glasgow Intl to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from Glasgow Intl to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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