India, Dec. 5 -- India's largest airline cancelled over 300 flights and experienced delays in hundreds of other flights in the last 48 hours. Major Indian airports are overwhelmed and passengers stranded as IndiGo battles one of its toughest operational crises in recent years.

IndiGo CEO Pieter Elbers has issued an apology to employees, acknowledging that the carrier has failed to meet the expectations of

the 3.8 lakh passengers it serves daily.

In his internal email titled Stronger Together, Elbers wrote the disruption stemmed from "an accumulation of several operational challenges", including minor technology glitches, schedule changes, adverse weather, heightened congestion across the aviation ecosystem and the enforcement of the ne...