Vistara, jointly owned by Tata group and Singapore Airlines, has axed over 125 flights since April 1, as per a source. The cancellations stemmed from a wave of pilot sick leaves in late March. Some pilots took leave to protest a pay cut prior to the impending merger with Tata's Air India. The pilots cited exhaustion from a hectic schedule as a contributing factor. Two Vistara pilots disclosed this information.