Operations research is the application of scientific and mathematical methods to study the problem-solving and decision-making aspect which is useful for the management of organizations. The discipline of operations research has greatly contributed to the aviation sector. It is one of the fastest-growing sectors globally, adding a lot of value to the economy. This paper is an effort to study and analyze the various 2 problems faced by the airline industry using the applications of operations research. The most common problems are fleet assignment, tail assignment, airline scheduling, airline overbooking, disruption management, airline maintenance planning, demand management, operational performance, and airport deicing. We’ll analyze, review and give suggestions for the operations research tools and models used by various researchers across the world to solve the problems. This paper also talks about the lack of a management system, the efficiency of various airlines in India, minimizing the operational cost in fleet operation, and the evaluation of Brazilian airlines. The data for this research paper has been collected using secondary research, by means of existing research papers, articles, and reliable websites like Statista, economic times, etc.