Normal operations have resumed at Mumbai’s Chhatrapati Shivaji Maharaj International Airport (CSMIA) after a third-party data network outage on August 9, 2025, temporarily disrupted check-in services and delayed several flights, affecting Air India and several other carriers.
The outage, which occurred amid heavy passenger traffic for the Raksha Bandhan festival, caused long queues and widespread delays. CSMIA said contingency measures were activated immediately, including switching to manual check-in to minimise disruption. “We’re operating in manual mode to reduce delays. We appreciate passengers’ patience,” the airport posted on X.
Air India confirmed the outage led to multiple flight delays, cautioning that residual disruptions would continue even after systems were restored.
The glitch, lasting over an hour before resolution, underscored the reliance of airport operations on uninterrupted data systems. Authorities and airlines emphasised the need for stronger redundancies and contingency plans to handle peak-time disruptions.
In a statement on X, CSMIA confirmed that systems had been fully restored, with staff working to clear backlogs and minimise residual delays. “We thank our passengers for their patience and cooperation during the outage,” the statement read.
Air India acknowledged the disruption, warning that some delays may persist while schedules stabilise. The airline urged passengers to check updated flight information before arriving at the airport.
Authorities said the incident underscored the importance of robust backup systems to ensure seamless operations during peak travel periods.
Mumbai airport, India’s second busiest, handles over 950 flights daily and recorded 13.6 million passengers in the April–June quarter of 2025–26.
