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There is 1 airport in San Antonio. Austin-Bergstrom Intl Airport (AUS) is San Antonio’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of Austin-Bergstrom Intl Airport (AUS). Austin-Bergstrom Intl Airport (AUS) is 72.7 miles from San Antonio and offers nonstop flights to cities.