NEW DELHI, Dec. 9 -- No airline, however large, will be permitted to cause hardship to passengers through planning failures and non-compliance with regulations, Civil Aviation Minister Ram Mohan Naidu said on Tuesday on the mass disruptions in IndiGo flight schedules.

Making a statement in the Lok Sabha, Naidu said "strict and appropriate action will be taken" against IndiGo for the flight disruptions that have affected passengers across the country.

The minister said the Directorate General of Civil Aviation (DGCA) has already issued notices to IndiGo and that the airline is being held fully accountable for the chaos caused by its internal crew-rostering failures.

Naidu said IndiGo flight schedules are stabilising and all other airlines...