The carrier, which has more than 200 planes and is expanding aggressively, operates over 1,300 daily flights.
An Indigo spokesperson, however, said the airline has not cancelled any additional flights other than the schedule cancellations.
The country's largest airline has cancelled flights from IndiGo's fromn Delhi, Kolkata, Chennai, Bengaluru and Hyderabad.
Operations at the Delhi airport saw massive disruption on February 7 as total 36 flights were diverted to nearby cities between 6 pm and 8.45 pm due to severe rain and hailstorm in the national capita
IndiGo A320neo flight from Port Blair to Kolkata reportedly suffered mid-air engine snag on December 23, last year.
The aircraft was taken to an isolated bay for a secondary ladder point check after a Bomb Threat Assessment Committee (BTAC) found the threat as "specific", the sources said.
The pilot had to issue a 'May Day' call, made to seek help in times of distress, and the the Pratt & Whitney-powered Airbus A320 Neo plane landed at the Kolkata airport under full emergency conditions
The pilot had informed the air traffic control soon after the smoke alarm went off in the cockpit, the official said.
The airport officials also informed that the inbound flight from Malaysia was at least 50 minutes delayed.
Following the incident, which happened when the aircraft was yet to take off, the unruly passenger was offloaded and later taken to police station by the airline staff.
An IndiGo statement here said the incident is being investigated by its flight safety team and aviation regulator Directorate General of Civil Aviation.
Of the 48 flights, which are not being operated as part of the curtailed schedule, 42 are of IndiGo and six of GoAir.
Around 150 passengers on board a Hyderabad-bound IndiGo flight had a miraculous escape on Sunday night as the aircraft hit a wild boar just before it took off from Visakhapatnam airport.
84 Indigo flights cancelled, 13 planes grounded, say media reports; none in past two months, claims airline
As many as 84 flights of India’s largest domestic carrier IndiGo were cancelled on Friday due to issues with engines of 12 of its planes.