65 ILCS 5/11-103-5

The corporate authorities of a specified municipality may make all reasonable rules and regulations, for air traffic and airport or landing field conduct, and for the management and control of the municipality's airport or landing field and other air navigation facilities and property under their control. These rules and regulations shall not be in conflict with the laws of the state, or the ordinances of the municipality, or the laws or regulations of the United States, or the regulations of the Illinois Commerce Commission, or the rules, rulings, regulations, orders or decisions of the Department of Transportation.