InterGlobe Aviation Limited (d/b/a IndiGo), is an Indian low-cost airline headquartered in Gurgaon, Haryana, India.

[5] It is the largest airline in India by passengers carried and fleet size, with a 63.6% domestic market share as of November 2024.

The airline was established as a private company by Rahul Bhatia of InterGlobe Enterprises—an Indian multinational conglomerate based in Gurugram—[10] and Rakesh Gangwal in 2005.

[9] IndiGo was founded in 2005 as a private company by Rahul Bhatia of InterGlobe Enterprises and Rakesh Gangwal, a United States–based expatriate Indian.

[16][17] IndiGo placed a firm order for 100 Airbus A320-200 aircraft in June 2005 with plans to begin operations in mid 2006.

[26] On 17 August 2012, IndiGo became the largest airline in India in terms of market share surpassing Jet Airways, six years after commencing operations.

[27] In January 2013, IndiGo was the second-fastest-growing low-cost carrier in Asia behind Indonesian airline Lion Air.

[28] In February 2013, following the announcement of the Civil Aviation Ministry that it would allow IndiGo to take delivery of only five aircraft that year, the airline planned to introduce low-cost regional flights by setting up a subsidiary.

[48] The flight attendants wear a single-piece navy-blue tunic with a cap and a thin indigo belt.

[26] The airline operates a single type of aircraft (Airbus A320) in similar seating configuration which simplifies crew training and maintenance.

[26] The airline targets a quick turn-around time of 20 minutes to get the aircraft ready for the next flight, ensuring planes fly about 12 hours every day.

[86][87] Otherwise, its own upcoming wide-body type will consist of the Airbus A350-900 from 2027, with plans for more narrow-body aircraft orders to further expand its global outreach.

[93] IndiGo offers premium services, where the passengers can avail additional benefits like a pre-assigned seat, multiple cancellations and priority check-in at a higher fare.

[94] In September 2019, the company announced a tie-up with SonyLIV, an on-demand video app, to provide passengers with entertainment options aboard flights and at the airport.