IndiGo meltdown explained- What is causing hundreds of flight cancellations?

Over 550 IndiGo flights were cancelled on Thursday as disruptions at major airports intensified, following strict government regulations on crew safety that affected the country’s largest airline’s roster planning. The budget carrier has assured the aviation watchdog DGCA of full restoration of “stable operations” by 10 February, while also noting that cancellations would continue for the next 2–3 days as part of schedule stabilisation efforts.

On Thursday, IndiGo – which holds over 60% of India’s domestic market – cancelled at least 95 flights at Delhi airport, 85 at Mumbai, 70 at Hyderabad, and 50 at Bangalore, news agency sources reported in the morning. The day before, the airline had already cancelled at least 150 flights across key cities.

What triggered the mass cancellations at IndiGo?

The airline attributed the chaos to a convergence of unexpected challenges. It said, “…multitude of unforeseen operational challenges, including minor technology glitches, schedule changes linked to the winter season, adverse weather conditions, increased congestion in the aviation system and the implementation of updated crew rostering rules (flight duty time limitations) had a negative compounding impact on our operations in a way that was not feasible to be anticipated.”

IndiGo added that it had launched “calibrated adjustments” to stabilise schedules and restore punctuality over the next 48 hours.

Multitudes of factors like Cyclone Ditwah that impacted Tamil Nadu, Andhra Pradesh and other southern coastal states also impacted flight activity.

According to Hindustan Times report, the immediate trigger for mass IndiGo flight disruptions was an emergency Airbus A320 software patch rushed through over the weekend of November 29-30 that disrupted crew scheduling just as the airline was operating with minimal slack due to the FDTL rules.

How widespread were the disruptions across India?

The impact was nationwide, hitting both metro airports and regional hubs.

Hyderabad

A chaotic situation unfolded at Rajiv Gandhi International Airport, Hyderabad, after IndiGo cancelled 19 departures and 21 arrivals. IndiGo had already cancelled nine flights the previous day.

Bengaluru

Kempegowda International Airport, Bengaluru, saw 62 domestic cancellations, impacting services to Delhi, Mumbai, Chennai, Hyderabad, Goa, Kolkata and Lucknow.

Mumbai

At least 33flights were cancelled at Mumbai (17 departures and 16 arrivals). Airport authorities issued an advisory urging passengers to verify flight status before travel.

Kolkata

IndiGo cancelled 10 flights amid severe crew shortages. An Airports Authority of India spokesperson confirmed the cancellation of five arrivals and five departures, with 85 flights delayed throughout the day.

Delayed arrivals included flights from Mumbai, Bengaluru, Delhi, Jaipur, Hyderabad, Ahmedabad, Patna and Goa.

Delayed departures included those bound for Delhi, Mumbai, Bengaluru, Gaya, Patna, Hyderabad, Jaipur, Nagpur and Ahmedabad.

Across the network, delays stretched for hours, leaving airport terminals overcrowded and social media buzzing with complaints.

Is IndiGo facing a pilot shortage?

A Reuters report cited three airport officials and an IndiGo pilot who claimed that the airline is grappling with a pilot shortage linked to newly enforced fatigue-management regulations.

Updated flight duty time limitations (FDTL), introduced on 1 July and 1 November, mandate longer rest periods for pilots to prevent fatigue — but have simultaneously complicated rostering for high-frequency airlines such as IndiGo.

IndiGo operates around 2,300 flights daily, making it the most exposed airline to crew availability constraints.

What did the DGCA say — and why is the regulator unhappy?

The DGCA confirmed it is examining the disruptions and has demanded a detailed explanation from IndiGo.

In its statement, the regulator said: “IndiGo has been asked to report to DGCA, Headquarters, to present the facts leading to the current situation along with plans to mitigate the ongoing delays & cancellations.”

DGCA highlighted the scale of cancellations recorded in November:

• 1,232 total cancellations
• 755 due to crew and FDTL constraints
• 258 linked to airport/airspace restrictions
• 92 attributed to ATC system failures
• 127 due to other factors

They added that many of these factors “lie beyond the operator’s direct control” but noted a steep decline in IndiGo’s On Time Performance — 67.7% in November, down from 84.1% in October.

How is IndiGo responding to restore normalcy?

The airline said it has put in place a controlled, temporary adjustment of flight schedules to “normalize our operations and progressively recover our punctuality.”

It added: “Our teams are working around the clock to ease customer discomfort and ensure operations stabilize as quickly as possible. Furthermore, the affected customers are being offered alternate travel arrangements to reach their destinations or refunds, as applicable.”

IndiGo urged passengers to check flight status before travelling:

https://www.goindigo.in/check-flight-status.html

Is IndiGo still facing delays on 4 December?

According to news agency PTI, IndiGo is still facing nationwide flight delays and cancellations on 4 December. Visuals from Delhi’s Indira Gandhi International Airport (IGI) showed the flight-information display boards reflecting the ongoing disruptions.