- A public airport is an airport that is open to the general public for commercial flights and other aviation activities. Public airports are operated and funded by government agencies or airport authorities, and they are typically regulated by national or local aviation authorities. These airports serve as transportation hubs for passenger travel and cargo shipping, allowing people and goods to move between different cities and countries. Public airports often have passenger terminals, runways, taxiways, and other facilities necessary for flight operations and passenger services. Some well-known examples of public airports include Los Angeles International Airport, London Heathrow Airport, and Sydney Airport.