McCarran International Airport ( McCarran International Airport (McCarran International Airport) is the primary airport for the city of Las Vegas and Clark County, Nevada, U.S.A. It is operated by the Clark County Aviation Authority and is located in Paradis, about 8 km south of downtown Las Vegas, with a total area of 1,133 hectares. McCarran International Airport is the primary base of operations for Allegiant Air, and is located in Paradis, approximately 1,133 hectares south of downtown Las Vegas.