Some charges like Air departure, landing cost security charges are not in control of airlines operators. This threat is for all airlines but especially to those airlines who are keeping their rates very low. Full service airlines can enter any time by reducing their cost. Because profit margin of Air Asia is 30% which is very less as compare to any other full service airlines. Problem may occur due to heavily depend online sales, like disruption or any other fault can happen to system which may result directly on sales. There will be lack of confidence among customers due to terrorist attack, accident, government policy etc.