This book is a step towards the standardizing the quality of airline services. This book presents Airline Service Quality Index, which is a tool for measuring the quality of services provided by Full Service Carriers (FSC) from the perspective of Indian airlines but can be replicated to other airlines as well. Airline service quality can facilitate the decision makers or industry professionals to understand the market sentiments and develop the market strategies. It can also help in branding and Business Development. Similarly, this tool can be extended for measuring service quality index of International airline as well as for the domestic airlines. This work can also used for teaching and further research. This effort will prove to be constructive for the wide range of stakeholders from aviation industry like airline operators, Regulatory Bodies, International agencies like IATA, Consultants, Professors, students etc.