New Delhi: Indian airlines are likely to induct more than 900 aircraft in the coming years, with IndiGo alone expected to add 448 planes, according to official data. India is one of the fastest growing aviation markets in the world and most airlines have ambitious expansion plans, especially to tap the potential on regional routes. As per data available with the civil aviation ministry, budget airlines IndiGo, SpiceJet, GoAir and AirAsia are set to significantly expand their respective fleet sizes. Along with other carriers, the total number of aircraft to be inducted by the domestic players would be more than 900. With an existing fleet of 150 planes, IndiGo is readying to add another 448 aircraft -- 399 A320s and 49 ATRs -- in the next seven to eight years. Competitor SpiceJet too is in the process of expanding its current fleet of 57 aircraft. The no-frills airline would be adding 107 B737-800s and 50 Bombardier Q400s during the 2018-2023 period.