Cheap flights from Ontario to San Antonio from $197

If you aren’t able to travel during the month of May, then book flights to San Antonio from Region of Ontario during April instead. Flights to San Antonio in April, while not as cheap as those in May, still average around $401.

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $474. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $524.

According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Region of Ontario to San Antonio in the evening for as low as $370. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the afternoon, with an average ticket price of $505. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Toronto Pearson Intl to San Antonio for the best Ontario - San Antonio flight prices

You are more likely to see cheaper flights to San Antonio from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $451 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Region of Ontario for as low as $298 on momondo.

There is only 1 cabin class available to choose from on Region of Ontario to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Delta, and American Airlines are the most popular carriers operating from Ontario to San Antonio

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to San Antonio from Region of Ontario according to our data. Air Canada is the first choice among our users, with 59% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 6 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

The number of flights available between Region of Ontario and San Antonio is 6 per week as of October 2026. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

Flight times vary depending on what airport in Region of Ontario you fly out of and what airport in San Antonio you fly into. For example, flying from Toronto to Austin takes 3h 35m on average. On the other hand, flying from Ottawa to Austin takes 6h 30m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.