Vistara had proposed to launch its flight services to Bali in Indonesia from New Delhi, while IndiGo had sought the regulator's nod to introduce air connectivity to Georgia's capital Tbilisi from New Delhi, the official said. "IndiGo operations (on) Delhi-Tbilisi (route) with effect from August 7 and Vistara operations (on) Delhi-Bali (route) with effect from August 1, have been approved," he said.