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Cheap flights from San Antonio to Ontario from C$ 188

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — YYZ
11 Jan — 18 Jan1
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 12 December 2025.

Thu 25/127:05 a.m.SAT - YUL
1 stop7h 11mUnited Airlines
Tue 30/127:00 a.m.YUL - SAT
1 stop9h 03mUnited Airlines
Deal found 11/12C$ 741
Wed 31/126:41 a.m.SAT - YYZ
1 stop10h 42mAmerican Airlines
Thu 1/14:40 p.m.YYZ - SAT
1 stop8h 19mAmerican Airlines
Deal found 11/12C$ 747
Thu 25/1212:25 p.m.SAT - YUL
1 stop6h 23mUnited Airlines
Wed 31/129:15 a.m.YUL - SAT
2 stops14h 33mUnited Airlines
Deal found 11/12C$ 754
Thu 25/125:20 a.m.SAT - YUL
2 stops13h 28mUnited Airlines
Mon 29/124:45 p.m.YUL - SAT
2 stops17h 05mUnited Airlines
Deal found 11/12C$ 761
Tue 30/126:45 a.m.SAT - YUL
2 stops40h 45mMultiple Airlines
Wed 7/18:00 a.m.YUL - SAT
1 stop16h 26mMultiple Airlines
Deal found 10/12C$ 786
Sun 21/126:45 a.m.SAT - YYZ
2 stops36h 10mMultiple Airlines
Sun 4/18:30 p.m.YYZ - SAT
1 stop27h 56mMultiple Airlines
Deal found 11/12C$ 812
Sun 21/1212:56 p.m.SAT - YYZ
1 stop8h 48mAmerican Airlines
Fri 26/126:10 a.m.YYZ - SAT
1 stop14h 10mAmerican Airlines
Deal found 11/12C$ 829
Thu 25/127:05 a.m.SAT - YUL
1 stop7h 11mUnited Airlines
Thu 1/16:00 p.m.YUL - SAT
1 stop17h 40mUnited Airlines
Deal found 11/12C$ 845
Wed 24/122:08 p.m.SAT - YUL
1 stop6h 09mUnited Airlines
Tue 30/127:00 a.m.YUL - SAT
1 stop9h 03mUnited Airlines
Deal found 11/12C$ 852
Wed 24/122:08 p.m.SAT - YUL
1 stop6h 09mUnited Airlines
Wed 31/129:15 a.m.YUL - SAT
2 stops14h 33mUnited Airlines
Deal found 11/12C$ 866
Sun 21/122:08 p.m.SAT - YYZ
2 stops8h 38mUnited Airlines
Wed 24/126:10 a.m.YYZ - SAT
1 stop8h 01mUnited Airlines
Deal found 10/12C$ 872
Tue 30/128:43 a.m.SAT - YUL
1 stop12h 56mAmerican Airlines
Wed 7/17:00 a.m.YUL - SAT
1 stop10h 10mAmerican Airlines
Deal found 10/12C$ 880

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 12 December 2025.

Round-trip from

C$ 414

One-way from

C$ 188

Popular in

October

Cheapest in

May

Average price

C$ 798
23/1-19/2
  • 23/1-19/2
  • 2 total stops
  • 38h 08m total
  • San Antonio to Ontario
Search Deals
18/3
  • 18/3
  • 1 total stop
  • 11h 54m total
  • San Antonio to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 2025.
Use the filters below to find and compare flights from San Antonio to Ontario that are best for you.

Fly from

San Antonio

Fly to

Ontario

Route

Depart

Return

Price

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Fri 23/1

10:35 a.m.-11:43 a.m.

1 stop24h 08m

Toronto Pearson Intl

Thu 19/2

8:30 p.m.-9:30 a.m.

1 stop14h 00m

C$ 414

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Wed 14/1

6:30 a.m.-11:20 p.m.

2 stops15h 50m

Toronto Pearson Intl

Fri 16/1

7:10 a.m.-11:52 p.m.

1 stop17h 42m

C$ 418

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Wed 21/1

6:30 a.m.-11:20 p.m.

2 stops15h 50m

Toronto Pearson Intl

Wed 28/1

11:15 a.m.-9:40 a.m.

1 stop23h 25m

C$ 439

San AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Mon 18/5

5:30 p.m.-10:03 a.m.

2 stops15h 33m

Ottawa

Sat 30/5

6:52 a.m.-12:10 p.m.

1 stop6h 18m

C$ 513

San AntonioOttawa

SAT - YOW

SATYOW

San Antonio

Thu 8/1

7:00 a.m.-5:12 p.m.

1 stop9h 12m

Ottawa

Mon 12/1

5:11 p.m.-8:41 a.m.

2 stops16h 30m

C$ 513

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Sat 24/1

10:35 a.m.-10:12 p.m.

1 stop10h 37m

Toronto Pearson Intl

Sat 31/1

8:30 p.m.-9:40 a.m.

1 stop14h 10m

C$ 516

San AntonioToronto

SAT - YYZ

SATYYZ

San Antonio

Tue 13/1

6:46 p.m.-3:35 p.m.

1 stop19h 49m

Toronto Pearson Intl

Thu 15/1

8:00 p.m.-8:41 p.m.

1 stop25h 41m

C$ 531

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Mon 12/1

12:21 p.m.-7:05 a.m.

2 stops17h 44m

Montreal Pierre Elliott Trudeau Intl

Wed 14/1

8:00 a.m.-9:40 a.m.

1 stop26h 40m

C$ 536

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Mon 9/2

10:35 a.m.-4:22 p.m.

1 stop28h 47m

Montreal Pierre Elliott Trudeau Intl

Mon 16/2

6:45 a.m.-11:59 p.m.

2 stops42h 14m

C$ 564

San AntonioMontreal

SAT - YUL

SATYUL

San Antonio

Fri 23/1

10:35 a.m.-5:00 p.m.

2 stops29h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 25/1

4:35 p.m.-11:52 p.m.

1 stop8h 17m

C$ 568

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 30 results
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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$ 101). Flying from San Antonio to Region of Ontario in November is currently the most expensive (average of C$ 644). 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.

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 can get you from San Antonio to Region of Ontario in just under 15h 33m. Your travel time can differ by up to . Airlines will cover a distance of 2652 km.

  • 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 United Airlines, which is currently one of the cheapest options available, starting at C$ 182. Air Canada flights start at C$ 210 while deals on American Airlines start at C$ 269 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$ 101). Flying from San Antonio to Region of Ontario in November is currently the most expensive (average of C$ 644). 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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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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