KARR is the ICAO code for Aurora Municipal Airport (IATA AUZ), located in Chicago, IL.
Aurora Municipal Airport (KARR) sits in Sugar Grove, Illinois, 40 miles west of downtown Chicago. The two runways (6,501 ft, 5,500 ft) handle every current business jet. Field elevation 712 ft, no density-altitude concerns. KARR serves the structural Fox Valley + Naperville corporate corridor. Ground time to Naperville is 25 minutes; downtown Chicago is 60.