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Cheap flights from Ontario to San Antonio from C$ 281

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SAT
5 Sep — 12 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to San Antonio

Enter your travel dates to find the best prices.

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

Sat 29/811:40 a.m. -
1 stop10h 24m
Mon 31/82:43 p.m. -
1 stop6h 16m
Deal found 5/8C$ 386
Wed 9/96:00 a.m. -
1 stop10h 10m
Sat 12/96:30 a.m. -
1 stop10h 00m
Deal found 3/8C$ 487
Fri 4/99:15 a.m. -
2 stops13h 01m
Sun 6/96:00 a.m. -
1 stop9h 10m
Deal found 3/8C$ 534
Tue 25/85:10 p.m. -
1 stop6h 24m
Sat 5/93:00 p.m. -
1 stop7h 30m
Deal found 5/8C$ 539
Wed 19/811:23 a.m. -
2 stops9h 35m
Sat 22/86:00 a.m. -
1 stop15h 06m
Deal found 5/8C$ 541
Wed 26/810:40 a.m. -
2 stops11h 25m
Sat 5/98:50 a.m. -
2 stops10h 30m
Deal found 5/8C$ 555
Sat 12/97:50 a.m. -
2 stops8h 47m
Tue 15/95:00 a.m. -
2 stops9h 29m
Deal found 4/8C$ 559
Sat 12/99:45 a.m. -
1 stop7h 46m
Sun 13/96:00 a.m. -
1 stop9h 10m
Deal found 4/8C$ 565
Wed 26/810:40 a.m. -
2 stops11h 25m
Thu 3/98:50 a.m. -
2 stops10h 30m
Deal found 5/8C$ 580
Sat 7/117:00 a.m. -
1 stop12h 53m
Mon 9/1112:43 p.m. -
1 stop17h 07m
Deal found 4/8C$ 590
Thu 27/86:10 a.m. -
1 stop17h 40m
Sun 6/96:30 a.m. -
1 stop13h 56m
Deal found 5/8C$ 590
Fri 18/97:00 a.m. -
1 stop11h 01m
Fri 25/911:36 a.m. -
1 stop10h 51m
Deal found 4/8C$ 591

Find flight deals from Ontario to San Antonio

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

Round-trip from

C$ 386

One-way from

C$ 281

Popular in

December

Cheapest in

July

Average price

C$ 843

Good round-trip deal

C$ 714 or less
Delta
  • Delta
  • 29/8-31/8
  • 2 total stops
  • 16h 40m total
  • Ontario to San Antonio
Search Deals
Air Canada
  • Air Canada
  • 21/10
  • 1 total stop
  • 9h 03m total
  • Ontario to San Antonio
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Ontario to San Antonio.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to San Antonio 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 Ontario to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSan Antonio

YYZ Toronto Pearson Intl - SAT San Antonio

YYZSAT

Toronto Pearson Intl

Sat 29/8

11:40 a.m.-9:04 p.m.

1 stop10h 24m

San Antonio

Mon 31/8

2:43 p.m.-9:59 p.m.

1 stop6h 16m

C$ 386

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

6:00 a.m.-3:10 p.m.

1 stop10h 10m

San Antonio

Sat 12/9

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

1 stop10h 00m

C$ 487

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

7:29 a.m.-9:38 p.m.

1 stop15h 09m

San Antonio

Sat 19/9

7:28 a.m.-4:53 p.m.

1 stop8h 25m

C$ 487

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

9:15 a.m.-10:51 p.m.

2 stops14h 36m

San Antonio

Sat 19/9

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

1 stop10h 00m

C$ 489

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

7:00 a.m.-4:39 p.m.

1 stop10h 39m

San Antonio

Sun 6/9

2:43 p.m.-11:52 p.m.

1 stop8h 09m

C$ 534

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

9:15 a.m.-9:16 p.m.

2 stops13h 01m

San Antonio

Sun 6/9

6:00 a.m.-4:10 p.m.

1 stop9h 10m

C$ 534

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 25/11

6:35 p.m.-12:31 a.m.

1 stop6h 56m

San Antonio

Wed 2/12

5:30 a.m.-3:58 p.m.

1 stop9h 28m

C$ 539

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Wed 2/9

3:25 p.m.-10:39 p.m.

2 stops8h 14m

San Antonio

Sat 5/9

5:59 p.m.-10:40 a.m.

2 stops15h 41m

C$ 539

MontrealSan Antonio

YUL Montreal Pierre Elliott Trudeau Intl - SAT San Antonio

YULSAT

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

6:10 a.m.-11:52 a.m.

1 stop6h 42m

San Antonio

Tue 15/9

5:30 a.m.-2:40 p.m.

2 stops8h 10m

C$ 539
Quickest round-trip

TorontoSan Antonio

YYZ Toronto Pearson Intl - SAT San Antonio

YYZSAT

Toronto Pearson Intl

Sun 20/9

7:00 a.m.-11:52 a.m.

1 stop5h 52m

San Antonio

Sat 26/9

8:50 a.m.-1:20 p.m.

Nonstop3h 30m

C$ 631

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 59 resultsSorted by cheapest first
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Best time to book a flight from Ontario to San Antonio

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

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

Currently, May is the cheapest month in which you can book a flight from Region of Ontario to San Antonio (average of C$ 545). Flying from Region of Ontario to San Antonio in July is currently the most expensive (average of C$ 784). 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 ON to SAT?

Find hourly flight availability from Ontario to San Antonio. 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.

When flying from Region of Ontario to San Antonio, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Airfare is below average for this route at the moment.
Region of Ontario to San Antonio flights typically cost between C$ 549 and C$ 847 in August.
The cheapest round-trip price found within the last 5 days was C$ 386 on Delta (29 Aug-31 Aug).

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

Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Region of Ontario to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

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

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

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

    Delta, United Airlines, and American Airlines can get you from Region of Ontario to San Antonio in just under 10h 10m. Your travel time can differ by up to 4h 59m. There are 2787 km between Region of Ontario and San Antonio. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Region of Ontario to San Antonio 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$ 270. WestJet flights start at C$ 292 while deals on United Airlines start at C$ 301 one-way.

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

    When deciding which route to take from Region of Ontario to San Antonio consider Toronto Pearson Intl - San Antonio, Montreal Pierre Elliott Trudeau Intl - San Antonio or Ottawa - San Antonio as they are the most popular.

  • What are the cheapest flights from Region of Ontario to San Antonio?

    The cheapest flight price from Region of Ontario to San Antonio is C$ 608. On average you can expect to pay C$ 833. The most popular route, (Toronto Pearson Intl - San Antonio), can usually be booked for C$ 386.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Region of Ontario to San Antonio (average of C$ 545). Flying from Region of Ontario to San Antonio in July is currently the most expensive (average of C$ 784). 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 Ontario to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to San Antonio

Discover the top 5 airlines that operate flights from Ontario to San Antonio. 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 629,999 searches. Data last updated 6 August 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 262AverageC$ 532FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 386AverageC$ 592FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 406AverageC$ 634FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 458AverageC$ 629FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 506AverageC$ 642FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Antonio from Ontario today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Ontario to San Antonio by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Ontario to San Antonio with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to San Antonio become cheaper?

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

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