How long is the flight from Glasgow Intl Airport to Ontario?

Departing from Glasgow Intl Airport to Ontario will take you 19h 33m. There are 5088 mi between Glasgow Intl Airport and Ontario. Both multi-stop and direct flights can be found to your destination and back.

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.

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).

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

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

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 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

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.

£406+ Cheap Flights from Glasgow Intl Airport to Ontario

Cheap flight deals from Glasgow Intl to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

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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 24 September 2026.

Thu 8/1009:30 -

2 stops22h 12m

Sun 25/1006:02 -

2 stops33h 53m

Deal found 22/9£496

Sun 22/1111:40 -

2 stops20h 19m

Sun 6/1214:22 -

2 stops18h 18m

Deal found 22/9£515

Thu 5/1110:20 -

2 stops19h 33m

Thu 12/1114:22 -

2 stops18h 28m

Deal found 21/9£516

Wed 7/1013:20 -

2 stops18h 32m

Sat 24/1010:25 -

2 stops17h 25m

Deal found 22/9£614

Tue 20/1019:30 -

2 stops31h 14m

Tue 27/1010:25 -

2 stops16h 30m

Deal found 22/9£622

Fri 9/1014:00 -

2 stops39h 59m

Thu 22/1005:00 -

2 stops21h 10m

Deal found 22/9£663

Tue 6/1014:35 -

2 stops38h 36m

Tue 20/1014:22 -

2 stops18h 23m

Deal found 22/9£670

Thu 8/1019:30 -

2 stops33h 41m

Tue 20/1014:22 -

2 stops18h 23m

Deal found 22/9£742

Wed 23/1220:15 -

2 stops30h 35m

Fri 1/105:44 -

2 stops21h 06m

Deal found 21/9£749

Thu 5/1108:30 -

3 stops42h 58m

Thu 12/1114:23 -

3 stops35h 32m

Deal found 21/9£759

Wed 23/1212:40 -

2 stops41h 22m

Sat 2/123:59 -

2 stops30h 36m

Deal found 21/9£788

Wed 21/1022:35 -

3 stops29h 05m

Sat 31/1006:25 -

2 stops20h 30m

Deal found 20/9£811

Find flight deals from Glasgow Intl to Ontario

Round-trip from	£496
One-way from	£406
Popular in	July
Cheapest in	November
Average price	£652

8/10-25/10
4 total stops
56h 05m total
Glasgow to Ontario

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Iberia
16/11-31/12
2 total stops
22h 01m total
Glasgow to Ontario

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£100 potential increase over avg. return price).

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Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Glasgow Intl Airport to Ontario that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Mon 16/11

22:40-11:18

3 stops44h 38m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£421

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Wed 11/11

10:55-23:46

2 stops20h 51m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£422

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Thu 17/12

16:50-06:15

3 stops45h 25m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£495

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Thu 5/11

10:20-21:53

2 stops19h 33m

Ontario

Thu 12/11

14:22-16:50

2 stops18h 28m

£516

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Thu 5/11

10:20-21:53

2 stops19h 33m

Ontario

Fri 27/11

13:30-18:00

2 stops20h 30m

£516

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Wed 27/1

10:55-23:08

2 stops20h 13m

Ontario

Sun 31/1

07:00-16:40

2 stops25h 40m

£569

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Wed 7/10

13:20-23:52

2 stops18h 32m

Ontario

Tue 27/10

10:25-09:55

2 stops16h 30m

£614

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Fri 9/10

14:00-21:59

2 stops39h 59m

Ontario

Thu 22/10

05:00-10:10

2 stops21h 10m

£663

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Sat 7/11

09:25-22:57

2 stops21h 32m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£782

GlasgowOntario

GLA Glasgow Intl - ONT Ontario

GLAONT

Glasgow Intl

Sun 8/11

09:05-22:09

2 stops21h 04m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£782

Flights are sorted by cheapest return flights first.

Deals found on 20/9

Showing 1-10 of 17 resultsSorted by cheapest first

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.

GLA-ONT

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.

Related info for your journey

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 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.
How long is the flight from Glasgow Intl Airport to Ontario?
Departing from Glasgow Intl Airport to Ontario will take you 19h 33m. There are 5088 mi between Glasgow Intl Airport and Ontario. Both multi-stop and direct flights can be found to your destination and back.
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.

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Cheap flights from Glasgow Intl Airport to Ontario from £406

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Glasgow Intl to Ontario

Cheapest flights from Glasgow Intl to OntarioExplore 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 24 September 2026.

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 24 September 2026.

Best flights from Glasgow Intl to OntarioDiscover carefully curated flight deals from Glasgow Intl to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Discover carefully curated flight deals from Glasgow Intl to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Last-minute flights from Glasgow Intl to OntarioDiscover last-minute flight deals from Glasgow Intl to Ontario. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Glasgow Intl to Ontario. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Glasgow Intl to OntarioSearch for one-way flight options from Glasgow Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

Search for one-way flight options from Glasgow Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

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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.

Related info for your journey

What airport do you fly into for flights to Ontario from Glasgow Intl?

How long is the flight from Glasgow Intl Airport to Ontario?

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

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

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

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Alternative routes for Glasgow Intl to Ontario

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Other flights to Ontario

Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 24 September 2026.

Glasgow Intl and Ontario flights

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

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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 24 September 2026.

Best flights from Glasgow Intl to Ontario
Discover carefully curated flight deals from Glasgow Intl to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Last-minute flights from Glasgow Intl to Ontario
Discover last-minute flight deals from Glasgow Intl to Ontario. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Glasgow Intl to Ontario
Search for one-way flight options from Glasgow Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.