Cheap flights from Alabama to San Antonio from $64

If you aren’t able to travel during the month of September, then book flights to San Antonio from Alabama during July instead. Flights to San Antonio in July, while not as cheap as those in September, still average around $326.

You are more likely to see cheaper flights to San Antonio from Alabama when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $377 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Alabama for as low as $249 on momondo.

Frontier, Spirit Airlines, and American Airlines are the most popular carriers operating from Alabama to San Antonio

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to San Antonio from Alabama according to our data. American Airlines 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 4 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 Alabama and San Antonio is 140 per week as of March 2026. The most frequent departure day is Mon, with 21% of weekly flights leaving on this day.

Flight times vary depending on what airport in Alabama you fly out of and what airport in San Antonio you fly into. For example, flying from Birmingham to Austin takes 3h 35m on average. On the other hand, flying from Mobile to Austin takes 4h 18m 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.