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A major technical glitch at Delhi’s Air Traffic Control (ATC) on Friday caused widespread disruption in flight operations across India, delaying over 400 flights and stranding thousands of passengers. The incident at Indira Gandhi International Airport (IGIA), one of the country’s busiest hubs, triggered a chain reaction, impacting flight schedules nationwide. The problem reportedly stemmed from a failure in the Automatic Message Switching System (AMSS), which manages crucial Air Traffic Control (ATC) data and flight plans. “Due to a technical issue with the Air Traffic Control (ATC) system, flight operations at IGIA (Indira Gandhi International Airport) are experiencing delays. Their team is actively working with all stakeholders including DIAL (Delhi International Airport Limited) to resolve it at the earliest,” read a passenger advisory. The AMSS failure has begun to affect operations at Mumbai, Jaipur, Lucknow, Varanasi, and other major airports, as flights originating from Delhi to these destinations are delayed. However, the AAI clarified that no similar technical issue has been reported at any other airport so far. Airlines Issue Advisory Airlines have issued advisories asking passengers to stay updated on their flight status before reaching the airport. “A technical issue with the ATC system in Delhi is impacting flight operations across all airlines, leading to delays and longer wait times. We regret the inconvenience caused by this unforeseen disruption,” Air India said in a statement, adding that on-ground staff are assisting affected passengers. Low-cost carriers IndiGo, SpiceJet, and Akasa Air also reported delays, particularly on northern routes. “While the authorities work to restore full system functionality, our priority is to support you with timely updates and assistance across all airport touchpoints. Our teams remain available and are doing their utmost to ensure your journey remains as smooth as possible,” said IndiGo. #6ETravelAdvisory We understand that the ongoing AMSS system issue affecting Air Traffic Control has led to delays and disruptions to travel plans, and we fully understand the inconvenience this may be causing to our customers and their loved ones. While the authorities work to… — IndiGo (@IndiGo6E) November 7, 2025 Delhi Airport Chaos: Top Points Over 400 flights delayed nationwide after a major ATC system glitch at Delhi’s IGI Airport. Automatic Message Switching System (AMSS) failure forced controllers to process flight plans manually. Disruptions at Delhi are spilling over to Mumbai, Jaipur, Lucknow, and Varanasi, due to delayed originating flights. AAI and DIAL technical teams are working to restore the system; no similar issue reported elsewhere. Airlines including Air India, IndiGo, SpiceJet, and Akasa Air have issued passenger advisories. Passengers have been advised to check flight updates regularly before arriving at airports. The glitch has led to longer wait times both at terminals and onboard aircraft.
