Economics Airline Industry in Australia Executive Summary Australian Airline industry is highly concentrated sector and it is confined to just 2-3 big players like Qantas, Virgin and Jetstar Airways. As per the given data of Airline Industry in Australia and concentration ratio analysis on them, it was tried to analyse Concentration Ratio and Herfinadahl-Hirschman Index (HHI) both economic model were taken to study the market concentration/share of top 3 airlines of Australia, based on that, concentration of airline market are as following