There are 517 primary airports in Australia distributed among 474 cities. Australia has the 43rd largest tourism market in the world by air, with 6,382,000 tourists arriving each year.*
The national aviation authority for the country is Civil Aviation Safety Authority. The busiest airport is Sydney International Airport with a total of 38,732,886 passengers.
*World Tourism Organization, Yearbook of Tourism Statistics, Compendium of Tourism Statistics and data files.