This document compares IndiGo and AirAsia, two low-cost airlines in India. It discusses their founders and growth strategies. IndiGo, founded by Rahul Bhatia, has become the largest airline in India through innovations like efficient operations and focusing on lower costs. AirAsia, founded by Tony Fernandes, has also seen success by focusing on ancillary revenues through fees and using aggressive marketing. Both airlines have helped revolutionize India's aviation industry through low cost models.