India, Dec. 5 -- IndiGo's nationwide flight disruptions were caused by poor rostering under the new flight duty time limits (FDTL) and a technical glitch in its crew-rostering and scheduling software, leading to widespread cancellations and delays across airports since Wednesday, two officials said.

Officials also said the airline faced technical issues in its baggage systems, affecting passengers in Delhi's Terminal 3 and, more significantly, those in Terminal 1. While the technical glitch was resolved, cascading delays in receiving baggage continued to affect passengers.

"The issue has led to mounting operational strain and increasing pressure on airport infrastructure, and hence all the stakeholders have been asked to observe a vigil...