IndiGo delays its 2nd daily Delhi-Istanbul flight to July 1, instead of May 1. Right now, there is one daily service between the two cities with one hour layover in Doha. The closure of Pakistan airspace has affected hundreds of flight operations worldwide. Most of the restrictions implemented in February remain in place. IndiGo now holds the maximum share in the Indian aviation sector (44%) and is trying to fill in the empty slots by Jet Airways, which recently has suspended its international and domestic operations until further notice.