IndiGo cancelled more than 250 flights from Delhi and Bengaluru airports on Monday, December 8, 2025, as operational troubles continued for the seventh day, sources said. The cancellations included 134 flights at Delhi—75 departures and 59 arrivals—and 117 flights at Bengaluru—62 departures and 65 arrivals. The Directorate General of Civil Aviation (DGCA) extended a deadline to 6 p.m. Monday for IndiGo CEO Pieter Elbers and COO Isidro Porqueras to reply to a show-cause notice. The regulator issued the notice on December 6, citing "significant lapses in planning, oversight, and resource management" linked to the flight disruptions. IndiGo has been under pressure for cancelling hundreds of flights since December 2, blaming new pilot flight duty and rest time regulations. These changes led to massive travel delays affecting lakhs of passengers nationwide. CEO Pieter Elbers apologized in a video on December 5, admitting to large-scale cancellations but did not specify the 1,600 flights scrapped that day—a record in Indian aviation. The new flight duty time limitations (FDTL) started in two phases, July 1 and November 1, 2025, with relaxations granted to IndiGo until February 10. The updated norms increase weekly rest to 48 hours, reduce night landings from six to two, and extend night duty hours. Airlines including IndiGo and Air India initially opposed the changes, but DGCA enforced them after the Delhi High Court's orders. IndiGo had requested phased implementation, citing crew shortages. The crisis highlights serious challenges in adapting to new aviation rules while managing passenger demand and operational resources.