India’s aviation regulator has imposed a penalty of Rs 22.20 crore on IndiGo after an extensive enquiry concluded that overworked crew rosters, weak operational planning and inadequate implementation of revised duty time norms led to large-scale flight delays and cancellations, causing severe inconvenience to passengers across the country. The regulator said the lapses exposed serious shortcomings in how the airline prepared for and managed operational changes.
The enquiry found that IndiGo’s senior management followed an over-optimised operational model that focused heavily on maximising the utilisation of crew, aircraft and network resources. While this approach aimed at efficiency, it left almost no margin to absorb disruptions, significantly reducing the airline’s ability to recover when problems arose. The regulator said this weakened overall operational resilience and made the network highly vulnerable to cascading failures.
Investigators highlighted that crew rosters were structured to push duty periods to the maximum permissible limits, with thin buffer margins built into schedules. The airline relied extensively on practices such as dead-heading, tail swaps and extended duty patterns to keep operations running. According to the enquiry, this compromised roster integrity and sharply limited recovery options once disruptions began, leading to widespread knock-on delays and cancellations.
The probe also pointed to serious planning failures and inadequate regulatory preparedness. It noted gaps in system software support and shortcomings in operational control mechanisms. The airline, the enquiry said, failed to properly evaluate the impact of the Winter Schedule 2025 and the revised Flight Duty Time Limitation norms before rolling them out. As a result, adequate contingency plans and operational buffers were not put in place.
These deficiencies, the regulator observed, directly contributed to network-wide disruptions that affected thousands of flights over nearly 15 days. The lack of preparedness meant that once delays began, the airline struggled to stabilise operations, worsening the impact on passengers across multiple airports.
The regulator has also taken action against IndiGo’s senior management. The airline’s Chief Executive Officer was issued a caution for inadequate overall oversight of flight operations and crisis management. The Accountable Manager and Chief Operating Officer were warned for failing to properly assess the implications of the revised duty time norms. In addition, the Senior Vice President in charge of the Operations Control Centre was warned and directed to be relieved of his current responsibilities, with instructions that he should not be assigned any accountable role due to failures in systemic planning and timely execution.
The total penalty of Rs 22.20 crore includes Rs 1.80 crore as a one-time systemic penalty for violations of six regulatory provisions, with each violation attracting a fine of Rs 30 lakh. An additional Rs 20.40 crore has been imposed as a continued non-compliance penalty, calculated at Rs 30 lakh per day for 68 days during which the airline remained in violation of the norms.
Beyond the monetary fine, the regulator has directed IndiGo to furnish a Rs 50 crore bank guarantee to ensure adherence to regulatory directions and the implementation of long-term corrective measures. This reform framework has been titled the IndiGo Systemic Reform Assurance Scheme and is intended to enforce sustained improvements in planning, compliance and operational stability.
The enquiry committee said its mandate extended beyond identifying violations and imposing penalties, and also focused on recommending long-term reforms to address systemic weaknesses. The objective, it said, is to prevent a recurrence of such large-scale disruptions and to safeguard passenger convenience and reliability of operations in the future.
IndiGo’s operational crisis began in early December 2025, when the airline struggled to implement the revised crew duty norms alongside its winter schedule. The situation quickly escalated into one of the most significant disruptions in Indian aviation. Between December 3 and 5 alone, around 2,500 flights were cancelled and nearly 1,900 were delayed, effectively paralysing large parts of the domestic network and leaving more than 300,000 passengers stranded at major airports including Delhi, Bengaluru, Mumbai, Hyderabad, Chennai and Kolkata.
On-time performance dropped sharply during this period, prompting intense regulatory scrutiny, government reviews and temporary curbs on the airline’s winter schedule. Normalcy returned only after more than a month, as IndiGo worked to stabilise operations under close monitoring by the regulator.
