As a section of Vistara pilots continue to protest against pay revision, at least 15 senior first officers resigned from the airline recently, sources said on Tuesday.
The airline operates a little over 300 flights daily and has a fleet of 70 planes comprising A320-family aircraft and Boeing 787s.
Over the past few weeks, the Tata Group airline has been grappling with simmering discontent among pilots, with many first officers of its A320 fleet reporting sick.
