Cheap flights from San Antonio to Houston from $58

The month of October is, on average, the cheapest month to fly to Houston from San Antonio, with most prices found around $161. The month of August is another great option to travel to Houston, with average flight prices from San Antonio averaging around $189.

On average, the least expensive day to fly to Houston from San Antonio is on a Monday. momondo users have found tickets for Monday departures for as low as $372. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Houston on Saturday is $487.

Our data shows that the cheapest San Antonio to Houston flights are usually those with departure times in the evening. Our users have found flights to Houston in the evening for as low as $539. Try not to purchase tickets at noon because they tend to be around $642. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from San Antonio to Houston George Bush Intcntl for the best San Antonio - Houston flight prices

Historically, on average around 15% of flights between San Antonio and Houston have experienced a delay on any given week. The average delay length over the past 12 months has been 93 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Southwest have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of February 2026, there are 24 flights per day flying from San Antonio to Houston. The most common time of day flights depart is 7:00AM, with 52% of flights taking off at noon.

The number of flights available between San Antonio and Houston is 173 per week as of February 2026. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.