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Cheap flights from San Antonio to Ontario from C$ 251

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 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — YYZ
5 Sep — 12 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Antonio to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from San Antonio to Ontario
Explore the most affordable flight options available from San Antonio to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 August 2026.

Thu 20/88:50 a.m. -
Nonstop3h 30m
Mon 24/86:25 p.m. -
Nonstop3h 40m
Deal found 6/8C$ 419
Sun 23/85:15 a.m. -
1 stop7h 19m
Mon 24/86:34 p.m. -
1 stop6h 54m
Deal found 5/8C$ 454
Sat 29/88:40 a.m. -
Nonstop3h 30m
Mon 7/96:30 p.m. -
Nonstop3h 43m
Deal found 6/8C$ 539
Wed 14/1010:34 a.m. -
1 stop26h 56m
Mon 19/104:45 p.m. -
2 stops41h 54m
Deal found 3/8C$ 579
Tue 25/81:00 p.m. -
1 stop8h 06m
Sat 29/86:10 a.m. -
1 stop17h 41m
Deal found 2/8C$ 600
Mon 14/99:50 p.m. -
1 stop21h 19m
Mon 21/98:35 p.m. -
1 stop18h 45m
Deal found 2/8C$ 614
Sat 5/97:05 a.m. -
1 stop13h 39m
Mon 14/95:34 p.m. -
1 stop7h 21m
Deal found 2/8C$ 631
Sat 5/98:50 a.m. -
1 stop6h 32m
Mon 14/91:10 p.m. -
2 stops9h 03m
Deal found 2/8C$ 640
Fri 28/86:25 a.m. -
1 stop10h 21m
Sun 30/86:00 a.m. -
1 stop10h 54m
Deal found 3/8C$ 642
Fri 28/812:15 p.m. -
1 stop6h 30m
Tue 1/99:45 a.m. -
2 stops8h 58m
Deal found 3/8C$ 645
Mon 2/119:35 a.m. -
2 stops11h 07m
Tue 3/116:00 a.m. -
2 stops10h 38m
Deal found 3/8C$ 652
Thu 1/109:25 a.m. -
2 stops28h 30m
Mon 5/108:35 p.m. -
1 stop18h 45m
Deal found 2/8C$ 654

Find flight deals from San Antonio to Ontario

Keep the following information in mind while searching for San Antonio to Ontario flight deals. Data was last updated 6 August 2026.

Round-trip from

C$ 419

One-way from

C$ 251

Popular in

October

Cheapest in

July

Average price

C$ 663
Air Canada
  • Air Canada
  • 20/8-24/8
  • Nonstop
  • 7h 10m total
  • San Antonio to Ontario
Search Deals
30/10
  • 30/10
  • 1 total stop
  • 26h 43m total
  • San Antonio to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio 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 629,999 searches. Data last updated 6 August 2026.
Use the filters below to find and compare flights from San Antonio to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioToronto

SAT San Antonio - YYZ Toronto Pearson Intl

SATYYZ

San Antonio

Fri 21/8

4:00 p.m.-11:03 p.m.

1 stop6h 03m

Toronto Pearson Intl

Sun 30/8

6:14 p.m.-10:34 p.m.

1 stop5h 20m

C$ 454

San AntonioToronto

SAT San Antonio - YYZ Toronto Pearson Intl

SATYYZ

San Antonio

Sun 23/8

5:15 a.m.-1:34 p.m.

1 stop7h 19m

Toronto Pearson Intl

Mon 24/8

6:34 p.m.-12:28 a.m.

1 stop6h 54m

C$ 454

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Tue 25/8

6:30 a.m.-5:30 p.m.

1 stop10h 00m

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

9:15 a.m.-7:58 p.m.

2 stops11h 43m

C$ 612

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Mon 2/11

1:25 p.m.-9:17 p.m.

1 stop6h 52m

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

6:00 a.m.-12:08 p.m.

1 stop7h 08m

C$ 631

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Fri 25/9

11:36 a.m.-11:27 p.m.

1 stop10h 51m

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

6:00 a.m.-2:07 p.m.

1 stop9h 07m

C$ 631

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Tue 29/9

4:21 p.m.-11:50 p.m.

1 stop6h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 5/10

6:47 p.m.-12:08 a.m.

1 stop6h 21m

C$ 631

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Fri 25/9

6:48 p.m.-11:44 a.m.

1 stop15h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

2:31 p.m.-9:59 p.m.

2 stops8h 28m

C$ 645

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Fri 28/8

12:15 p.m.-7:45 p.m.

1 stop6h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 1/9

9:45 a.m.-5:43 p.m.

2 stops8h 58m

C$ 645

San AntonioMontreal

SAT San Antonio - YUL Montreal Pierre Elliott Trudeau Intl

SATYUL

San Antonio

Mon 7/9

5:15 a.m.-11:56 a.m.

1 stop5h 41m

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

6:00 a.m.-10:39 a.m.

1 stop5h 39m

C$ 663

San AntonioToronto

SAT San Antonio - YYZ Toronto Pearson Intl

SATYYZ

San Antonio

Thu 10/9

4:00 p.m.-10:59 p.m.

1 stop5h 59m

Toronto Pearson Intl

Mon 21/9

6:10 a.m.-12:15 p.m.

1 stop7h 05m

C$ 695

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from San Antonio to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Antonio with our price prediction graph.
Estimated round-trip 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 San Antonio to Ontario

What is the cheapest month to book a flight from San Antonio to Region of Ontario?

Currently, July is the cheapest month in which you can book a flight from San Antonio to Region of Ontario (average of C$ 479). Flying from San Antonio to Region of Ontario in December is currently the most expensive (average of C$ 916). 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 SAT to ON?

Find hourly flight availability from San Antonio 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 6 August 2026.

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

How much does it cost to fly round-trip from San Antonio to Region of Ontario?

Airfare is below average for this route at the moment.
San Antonio to Region of Ontario flights typically cost between C$ 633 and C$ 901 in August.
The cheapest round-trip price found within the last 5 days was C$ 419 on Air Canada (20 Aug-24 Aug).

How far ahead should I book a flight from San Antonio to Region of Ontario?

The best time to book flights from San Antonio to Region of Ontario is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

Find useful and relevant information for your journey from San Antonio 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 from for flights from San Antonio to Ontario?

    Most people fly from San Antonio (SAT) if they book a flight from San Antonio to Ontario. San Antonio is conveniently located just 12.2 km from San Antonio’s city centre.

  • How long is the flight from San Antonio to Region of Ontario?

    Delta and United Airlines can get you from San Antonio to Region of Ontario in just under 6h 03m. Your travel time can differ by up to 3h 57m. Airlines will cover a distance of 2292 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from San Antonio to Region of Ontario?

    The most popular route from San Antonio to Region of Ontario is San Antonio - Toronto Pearson Intl. You may also consider San Antonio - Montreal Pierre Elliott Trudeau Intl or San Antonio - Ottawa.

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

    Yes. In addition to deals on San Antonio to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Ontario?

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

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

    Yes. Cheapflights offers flight deals from San Antonio 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 San Antonio to Region of Ontario?

    Currently, July is the cheapest month in which you can book a flight from San Antonio to Region of Ontario (average of C$ 479). Flying from San Antonio to Region of Ontario in December is currently the most expensive (average of C$ 916). 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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Alternative routes for San Antonio to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Pearson Intl flights
Hobby to Pearson Intl flights
George Bush Intcntl to Pearson Intl flights
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Hobby to Vancouver Intl flights
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Hobby to Pierre Elliott Trudeau Intl flights
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Austin to Calgary flights
Dallas/Fort Worth to Toronto Island flights
Austin to Pierre Elliott Trudeau Intl flights
Love Field to Pierre Elliott Trudeau Intl flights
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Love Field to Pearson Intl flights
Dallas/Fort Worth to Edmonton flights
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San Antonio to Pearson Intl flights
Hobby to Edmonton flights
Dallas/Fort Worth to Québec City flights
Dallas/Fort Worth to Ottawa flights
Dallas/Fort Worth to Winnipeg flights
Hobby to Ottawa flights
George Bush Intcntl to Edmonton flights
Dallas/Fort Worth to Abbotsford flights
El Paso to Vancouver Intl flights
Austin to Québec City flights
Love Field to Calgary flights
Austin to Edmonton flights
San Antonio to Pierre Elliott Trudeau Intl flights
George Bush Intcntl to Ottawa flights
Hobby to Winnipeg flights
San Antonio to Calgary flights
Austin to Abbotsford flights
Dallas/Fort Worth to Kelowna flights
Dallas/Fort Worth to Saskatoon flights
George Bush Intcntl to Halifax flights
George Bush Intcntl to Winnipeg flights
Dallas/Fort Worth to St. John's flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Antonio to Ontario?

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Why should you use Cheapflights to find cheap flight tickets from San Antonio 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 San Antonio to Ontario.

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

Need flexible booking options for your flight to Ontario from San Antonio? 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 San Antonio to Ontario become cheaper?

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

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