On Monday, InterGlobe Aviation, the parent company of IndiGo, fell 3.7 per cent to Rs 1,589 apiece on the Bombay Stock Exchange. The Directorate General of Civil Aviation (DGCA) sought clarification from IndiGo.

The Directorate General of Civil Aviation (DGCA) took “strong cognizance against IndiGo and (has) ought to provide a clarification/ explanation behind the massive flight delays nationwide,” the media reported.

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“Most delays happened in Delhi, IndiGo’s largest base. As a result, the entire network saw a cascading impact,” media reported.

Only 45 per cent of the flights depart on time, and almost 850 or more flights take off more than 15 minutes after their scheduled time. On Friday, around 1,600 flights were operated by the airline, but fifty flights had to cancel.

In the morning trade, shares of the airline were down 2.4 per cent at Rs 1,610 per share as against a 0.26 per cent dip in the BSE Sensex. Peer firm SpiceJet’s shares were lower by 1.5 per cent.