Traffic in Australia is heavily concentrated: Sydney Kingsford Smith Airport (SYD) alone handles about 41.4 million passengers a year, roughly 46% of the 90 million across the 5 airports listed here. That pattern is typical of a country with one dominant hub carrier feeding a single gateway.
Between them these airports operate 11 runways serving 5 cities, and the country spans 5 time zones, so a domestic flight here can change your watch. Every airport below links to a live map of aircraft observed within available ADS-B coverage around the field.
The next airport in the ranking is Melbourne Airport (MEL) at about 35.6 million passengers. The gap to SYD is 5.8 million, while the three busiest airports account for roughly 100% of traffic represented by this list. Most listed traffic is therefore concentrated at the top of the network.
The airports are spread across roughly 25 degrees of latitude and 37 degrees of longitude. That geographic spread makes weather, daylight and local operating conditions materially different across the same national network. Field elevations vary less dramatically than they do in the world's mountain-airport networks. The average across this selected set is 2.2 runways per airport.
Read airport by airport, the selected Australia network is not interchangeable: Sydney Kingsford Smith Airport (SYD) has 3 runways and about 41.4 million annual passengers, Melbourne Airport (MEL) has 2 runways and about 35.6 million annual passengers, Perth Airport (PER) has 2 runways and about 13.5 million annual passengers, Brisbane International Airport (BNE) has 2 runways and no comparable traffic figure and Darwin International Airport / RAAF Darwin (DRW) has 2 runways and no comparable traffic figure. Those differences matter when comparing a live map. A larger passenger total indicates schedule scale, while runway count describes physical layout; neither number by itself proves how delayed, connected or operationally efficient an airport will be on a particular day.