Cheap flights from Houston to San Antonio from $65

If you aren’t able to travel during the month of August, then book flights to San Antonio from Houston during October instead. Flights to San Antonio in October, while not as cheap as those in August, still average around $181.

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $271. 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 Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $420.

According to our data, the cheapest time of day to fly to San Antonio is in the morning. momondo users have found flights departing from Houston to San Antonio in the morning for as low as $330. 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 evening, with an average ticket price of $420. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Houston Hobby to San Antonio for the best Houston - San Antonio flight prices

The number of flights available between Houston and San Antonio is 25 per day as of April 2026. The most frequent departure time is 6:00PM, with 48% of daily flights leaving in the evening.

As of April 2026, 180 flights take off from Houston and land in San Antonio each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.