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There are 2 airports in San Antonio. San Antonio Intl Airport (SAT) 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 San Antonio Intl Airport (SAT). San Antonio Intl Airport (SAT) is 7.7 miles from San Antonio and offers nonstop flights to cities. San Antonio’s secondary airport Austin-Bergstrom Intl Airport (AUS) is 72.7 miles from San Antonio and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.