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Cheap flights from Glasgow to Ontario from £517

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — ONT
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Glasgow to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Glasgow (GG1) 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 4 July 2025.

Round-trip from

£517

Popular in

August

Cheapest in

March

Average price

£650
Delta
  • Delta
  • 3/9-15/9
  • 4 total stops
  • 33h 53m total
  • Glasgow to Ontario
Highest demand for flights based on searches. 11% potential increase in price (£54 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Glasgow to Ontario

Cheapest flights from Glasgow to Ontario
Explore the most affordable flight options available from Glasgow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Wed 3/906:00GLA - ONT
2 stops18h 08mDelta
Mon 15/913:15ONT - GLA
2 stops15h 45mDelta
Deal found 3/7£517
Fri 22/805:50GLA - ONT
2 stops20h 02mBritish Airways
Mon 25/814:57ONT - GLA
2 stops19h 33mBritish Airways
Deal found 2/7£554
Thu 4/906:15GLA - ONT
2 stops17h 53mKLM
Sun 14/906:00ONT - GLA
2 stops33h 10mKLM
Deal found 3/7£708
Fri 11/708:35GLA - ONT
2 stops18h 18mIberia
Mon 21/714:37ONT - GLA
2 stops19h 53mIberia
Deal found 3/7£1,389
Fri 11/714:20GLA - ONT
2 stops17h 39mMultiple Airlines
Mon 21/718:58ONT - GLA
2 stops34h 27mMultiple Airlines
Deal found 2/7£1,590

Cheapflights Fare Finder

Customise your flight search to find flights from Glasgow 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 4 July 2025.
Use the filters below to find and compare flights from Glasgow to Ontario that are best for you.

Fly from

Glasgow

Fly to

Ontario

Route

Depart

Return

Price

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Wed 3/9

06:00-16:08

2 stops18h 08m

Ontario

Mon 15/9

13:15-13:00

2 stops15h 45m

£517

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Fri 22/8

05:50-17:52

2 stops20h 02m

Ontario

Mon 25/8

14:57-18:30

2 stops19h 33m

£554

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Thu 4/9

06:15-16:08

2 stops17h 53m

Ontario

Sun 14/9

06:00-23:10

2 stops33h 10m

£708

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Tue 29/7

14:20-00:15

2 stops17h 55m

Ontario

Tue 5/8

12:00-13:25

2 stops17h 25m

£1,934

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Tue 30/9

08:45-18:54

2 stops18h 09m

£1,205

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Mon 21/7

14:20-23:55

2 stops17h 35m

£1,421

Flights are sorted by cheapest return flights first.

Deals found on 4/7

Best time to book a flight from Glasgow to Ontario

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

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

Currently, March is the cheapest month in which you can book a flight from Glasgow to Ontario (average of £516). Flying from Glasgow 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.

What is the cheapest time of day to fly from GLA to ONT?

Find hourly flight availability from Glasgow to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Glasgow to Ontario as you normally would.

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 4 July 2025.
See what other customers who have flown with Delta, KLM, andBritish Airways from Glasgow to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very Good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

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 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?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from Glasgow. Booking flights from Glasgow to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from Glasgow from 1 airline.

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

    Delta, at £517, was found to be the cheapest airline from Glasgow to Ontario.Alternate airlines flying return to your destination include British Airways and KLM.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Glasgow 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 to Ontario?

    Currently, March is the cheapest month in which you can book a flight from Glasgow to Ontario (average of £516). Flying from Glasgow 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Glasgow to Ontario

Discover the top airline that operate flights from Glasgow 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£429Average£507FlexibilityNo 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 to Ontario?

Cheapflights makes it easy to find Glasgow to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Glasgow to Ontario.

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

Yes, we can. To see specific flights from Glasgow 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 to Ontario become cheaper?

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

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