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Cheap flights from San Antonio to Ontario from C$ 162

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — YYZ
16 Apr — 23 Apr1
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 17 March 2026.

Tue 21/47:14 a.m.
SAT
-
YYZ
1 stop14h 26m
American Airlines
Fri 24/46:15 p.m.
YYZ
-
SAT
1 stop6h 41m
American Airlines
Deal found 13/3C$ 404
Tue 14/47:14 a.m.
SAT
-
YYZ
1 stop9h 25m
American Airlines
Sat 18/412:34 p.m.
YYZ
-
SAT
1 stop9h 24m
American Airlines
Deal found 11/3C$ 419
Sat 25/46:20 a.m.
SAT
-
YYZ
1 stop9h 25m
American Airlines
Sat 2/53:45 p.m.
YYZ
-
SAT
1 stop6h 02m
American Airlines
Deal found 13/3C$ 422
Sat 11/41:22 p.m.
SAT
-
YYZ
1 stop8h 13m
Multiple Airlines
Wed 15/46:30 a.m.
YYZ
-
SAT
1 stop18h 21m
Multiple Airlines
Deal found 16/3C$ 464
Tue 14/410:22 a.m.
SAT
-
YYZ
1 stop26h 43m
Multiple Airlines
Mon 20/48:00 p.m.
YYZ
-
SAT
2 stops20h 09m
Multiple Airlines
Deal found 11/3C$ 498
Wed 29/46:49 a.m.
SAT
-
YOW
1 stop9h 18m
United Airlines
Wed 6/55:25 p.m.
YOW
-
SAT
1 stop6h 29m
United Airlines
Deal found 15/3C$ 501
Tue 14/410:22 a.m.
SAT
-
YYZ
1 stop26h 43m
Multiple Airlines
Sun 19/46:30 a.m.
YYZ
-
SAT
1 stop18h 21m
Multiple Airlines
Deal found 11/3C$ 504
Sat 11/41:22 p.m.
SAT
-
YYZ
1 stop8h 13m
Multiple Airlines
Sun 19/46:30 a.m.
YYZ
-
SAT
1 stop11h 47m
Multiple Airlines
Deal found 16/3C$ 505
Mon 18/56:02 p.m.
SAT
-
YOW
2 stops15h 01m
United Airlines
Sat 30/510:44 a.m.
YOW
-
SAT
1 stop13h 11m
United Airlines
Deal found 15/3C$ 515
Wed 15/42:12 p.m.
SAT
-
YYZ
1 stop9h 02m
Multiple Airlines
Wed 22/411:15 a.m.
YYZ
-
SAT
1 stop13h 36m
Multiple Airlines
Deal found 16/3C$ 524
Tue 14/410:22 a.m.
SAT
-
YYZ
1 stop26h 43m
Multiple Airlines
Tue 21/412:22 p.m.
YYZ
-
SAT
1 stop5h 55m
Multiple Airlines
Deal found 11/3C$ 526
Wed 15/42:12 p.m.
SAT
-
YUL
1 stop9h 18m
Multiple Airlines
Wed 22/46:45 a.m.
YUL
-
SAT
1 stop18h 06m
Multiple Airlines
Deal found 16/3C$ 561

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 17 March 2026.

Round-trip from

C$ 404

One-way from

C$ 162

Popular in

December

Cheapest in

May

Average price

C$ 693
American Airlines
  • American Airlines
  • 21/4-24/4
  • 2 total stops
  • 21h 07m total
  • San Antonio to Ontario
Search Deals
American Airlines
  • American Airlines
  • 2/6
  • 1 total stop
  • 7h 26m total
  • San Antonio to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 155 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 17 March 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 AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Mon 18/5

6:02 p.m.-10:03 a.m.

2 stops15h 01m

Ottawa

Sat 30/5

10:44 a.m.-9:28 p.m.

2 stops11h 44m

C$ 522

San AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Wed 29/4

5:30 a.m.-1:59 p.m.

2 stops7h 29m

Ottawa

Wed 6/5

7:30 p.m.-8:42 a.m.

2 stops14h 12m

C$ 522

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Sun 12/4

5:10 a.m.-11:23 a.m.

1 stop5h 13m

Toronto Pearson Intl

Sat 18/4

4:10 p.m.-11:08 p.m.

1 stop7h 58m

C$ 557

San AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Sun 12/4

7:15 p.m.-3:21 p.m.

2 stops19h 06m

Ottawa

Sun 19/4

5:50 p.m.-8:42 a.m.

2 stops15h 52m

C$ 607

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Sat 2/5

7:05 a.m.-4:10 p.m.

1 stop8h 05m

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

6:35 p.m.-8:42 a.m.

2 stops15h 07m

C$ 622

San AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Thu 2/4

7:15 p.m.-3:21 p.m.

2 stops19h 06m

Ottawa

Mon 6/4

6:25 a.m.-10:58 p.m.

1 stop17h 33m

C$ 623

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Fri 29/5

1:40 p.m.-12:13 a.m.

2 stops9h 33m

Montreal Pierre Elliott Trudeau Intl

Tue 2/6

2:20 p.m.-10:57 p.m.

2 stops9h 37m

C$ 641

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Tue 7/4

12:15 p.m.-10:06 p.m.

1 stop8h 51m

Montreal Pierre Elliott Trudeau Intl

Sat 11/4

6:10 a.m.-6:59 p.m.

1 stop13h 49m

C$ 649

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Tue 2/6

6:40 a.m.-9:26 p.m.

1 stop13h 46m

Montreal Pierre Elliott Trudeau Intl

Tue 9/6

9:45 a.m.-4:03 p.m.

1 stop7h 18m

C$ 649

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Tue 28/4

12:15 p.m.-10:06 p.m.

1 stop8h 51m

Montreal Pierre Elliott Trudeau Intl

Tue 5/5

6:10 a.m.-8:35 p.m.

2 stops15h 25m

C$ 656

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/3

Showing 1-10 of 41 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, September is the cheapest month in which you can book a flight from San Antonio to Region of Ontario (average of C$ 100). Flying from San Antonio to Region of Ontario in November is currently the most expensive (average of C$ 639). 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.

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

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?

    United Airlines and WestJet can get you from San Antonio to Region of Ontario in just under 5h 13m. Your travel time can differ by up to 9h 48m. 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 cheapest airlines to fly from San Antonio to Region of Ontario one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 217. WestJet flights start at C$ 258 while deals on American Airlines start at C$ 267 one-way.

  • 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, September is the cheapest month in which you can book a flight from San Antonio to Region of Ontario (average of C$ 100). Flying from San Antonio to Region of Ontario in November is currently the most expensive (average of C$ 639). 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.
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Fly with Cheapflights

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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.

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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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