Over 400 Flights Cancelled Across Four Major Airports — Top Developments.

What’s happening

• IndiGo has cancelled over 400 flights across four major airports today, as its ongoing operational crisis enters a fifth day.
• The worst-hit hubs include Indira Gandhi International Airport (Delhi), Chhatrapati Shivaji Maharaj International Airport (Mumbai), Kempegowda International Airport Bengaluru (Bengaluru), and Rajiv Gandhi International Airport (Hyderabad).

Why it’s happening

• The disruptions stem from the airline’s inability to cope with recently implemented crew-duty regulations under the new Directorate General of Civil Aviation (DGCA) norms. Specifically, mandatory rest periods and night-landing restrictions for pilots have led to severe crew shortages.
• The airline says these cancellations are a result of “misjudgment and planning gaps” in roster management.

Impact on travellers & airports

• Thousands of passengers have been left stranded — many flights were cancelled with little or no notice, sparking frustration and chaos in airport terminals.
• At Mumbai’s airport, for example, over 100 flights (departures + arrivals) were cancelled, leading to overcrowded gates, long queues, and complaints of inflated alternate fares from travellers rerouting on other airlines.
• Airport authorities at several airports have issued advisories, urging passengers to check flight status before leaving for the airport.

Regulatory, airline & government reaction

• The government — via the DGCA and the Ministry of Civil Aviation — has stepped in, temporarily relaxing certain pilot-duty norms to help the airline stabilise operations.
• A high-level inquiry has been ordered to investigate what went wrong in crew scheduling and planning. Officials say those responsible “will be held accountable.”
• For now, IndiGo continues to advise caution: passengers are urged to verify flight status before heading to airports, and to consider alternate travel modes if possible.

What’s next

• The airline has warned that this disruption may continue through the coming days as it attempts a structural “reset” of its schedules.
• Meanwhile, the government and regulatory bodies are pressing for swift corrective action — including systematic roster overhaul — to avoid further chaos.