Cheap flights from Ontario to San Antonio from $96

If you aren’t able to travel during the month of October, then book flights to San Antonio from Ontario during September instead. Flights to San Antonio in September, while not as cheap as those in October, still average around $304.

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $339. 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 Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Sunday is $495.

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 Ontario to San Antonio in the evening for as low as $242. 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 at noon, with an average ticket price of $392. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to San Antonio from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $341 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Ontario for as low as $273 on momondo.

There is only 1 cabin class available to choose from on 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.

Frontier is the most popular carrier operating from Ontario to San Antonio

Southwest, Delta and American Airlines are the top three most popular airlines that fly to San Antonio from Ontario according to our data. Southwest is the first choice among our users, with 33% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 7 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

Las Vegas (LAS) was the most common stop: 64% of momondo users choosing 1-stop flights on this route connected there.

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $180.

Flights connecting via Phoenix (PHX) have the shortest average one-way travel time: 4h 55m.

Phoenix (PHX) has the shortest average layover time for this route: 1h 15m.