IndiGo is a low-cost airline headquartered at Gurgaon, Haryana, India. It is the largest airline in India in passengers carried, with a 39.8% market share as of January 2017 and eighth largest carrier in Asia with over 41 million passengers carried in 2016. The airline operates to 46 destinations and is the second largest low-cost carrier in Asia. It has its primary hub at Indira Gandhi International Airport, Delhi.

The airline was founded as a private company, by Rahul Bhatia of InterGlobe Enterprises; and Rakesh Gangwal, a United States-based expatriate Indian; in 2006. It took delivery of its first aircraft in July 2006 and commenced operations a month later. The airline became the largest Indian carrier in passenger market share in 2012. The company went public in November 2015.