Cheap flights from Wisconsin to San Antonio from $99

If you aren’t able to travel during the month of August, then book flights to San Antonio from Wisconsin during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $134.

You are more likely to see cheaper flights to San Antonio from Wisconsin when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $419 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Wisconsin for as low as $315 on momondo.

United Airlines, American Airlines, and Frontier are the most popular carriers operating from Wisconsin to San Antonio

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to San Antonio from Wisconsin according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to San Antonio. Keep in mind that there are 5 different airlines that fly to San Antonio on a routine basis, so you have a few additional options to choose from.

As of May 2026, 229 flights take off from Wisconsin and land in San Antonio each week. The most common flight departure day for this route is Fri, with 17% of weekly flights taking off on this day.

Flight times vary depending on what airport in Wisconsin you fly out of and what airport in San Antonio you fly into. For example, flying from Milwaukee to Austin takes 2h 35m on average. On the other hand, flying from Wausau to Austin takes 4h 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.