India's largest airline IndiGo cancelled hundreds of flights on Friday after three days of wide disruption. IndiGo flies over 2,000 flights daily and holds 60% market share. The airline faces pilot shortages due to trouble adapting to new crew rostering rules that require more rest and fewer night duties. All IndiGo flights from Delhi are cancelled, stranding thousands in a busy travel season. IndiGo said full normalcy will return only by 10 February and planned to reduce flights starting 8 December to limit disruptions. The government is watching closely, with the federal aviation minister expressing "clear displeasure" at IndiGo's handling. The aviation regulator blamed "misjudgment and planning gaps" in implementing new flight duty rules. IndiGo must now submit detailed plans for crew recruitment, training, and safety. The Airline Pilots Association of India slammed any relaxation of the new rules, saying it "gravely" risks passenger safety. New rules mandate pilots get more rest and reduce required night landings from six to two weekly. December is a peak travel time in India due to school holidays and weddings. IndiGo will waive cancellation and reschedule fees for flights between 5 and 15 December and is arranging hotels and food for stranded passengers. However, many passengers complain on social media about poor communication and lack of food at airports. Singapore's High Commissioner Simon Wong, stranded at an Indian airport, said he was "lost for words" after missing a young staff member's wedding. Major airports in Delhi, Mumbai, and other cities advise passengers to check flight status before traveling to airports.