Cheap flights from Wisconsin to San Antonio from $90

If you aren’t able to travel during the month of April, then book flights to San Antonio from Wisconsin during January instead. Flights to San Antonio in January, while not as cheap as those in April, still average around $349.

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 $435 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 $358 on momondo.

Frontier, Southwest, and United Airlines 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 36% 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 September 2026, 185 flights take off from Wisconsin and land in San Antonio each week. The most common flight departure day for this route is Thu, with 19% 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 Madison to Austin takes 4h 37m 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.