Vistara is cutting about 10% of its flights following the recent protest by its pilots against the airline’s “inhumane” rostering that was inducing fatigue and stress. This capacity cut just ahead of the coming peak summer travel season could push fares up. While passengers numbers are at record high, there are few planes to fly them for a variety of reasons like almost 75 planes of IndiGo being grounded due to snag-ridden Pratt & Whitney engines.