How did Rahul Bhatia build Indigo into India's largest airlines?

Rahul Bhatia's 20-year-old travel business - Delhi Express, went bankrupt. He then decided to start a travel company - Interglobe and got an airline license in 2004. He named the airlines "Indigo" and flew for the first time from Delhi to Imphal on 4th August 2006. Today, Indigo flies 85 million passengers annually and carries a 54.7% market share.