The document discusses the airline industry in India as an oligopoly market. It notes that as of 2017, four major domestic airlines - Air India, Jet Airways, Vistara, and Indigo - carry about 80% of domestic passengers, demonstrating an oligopolistic market structure. It also provides information on the characteristics of oligopolies, defines different types of airlines, and lists the major private airlines in India, with IndiGo having the largest market share at 36.8%. Price comparisons are given for different airlines flying domestic routes from Chandigarh and Jammu and Kashmir. Services offered by airlines like child care, upgrades, air miles, and airport lounges are also summarized