According to AI officials in Agartala and Guwahati, at least four flights from Kolkata -- to Imphal, Agartala and Guwahati -- were cancelled till Thursday evening.
However, a flight each to Silchar in southern Assam, Guwahati, Imphal and Shillong operated from the Kolkata airport.
Around 800 pilots and members of the Indian Commercial Pilots Association (ICPA), earlier on the payrolls of the erstwhile Indian Airlines, had gone on an indefinite strike from Tuesday midnight demanding parity in pay with their counterparts in Air India and among other issues related to work conditions.