Indigo Airlines offers low fares, on-time flights, and a hassle-free experience, with professional customer service. It is one of India's largest airlines and the country's largest, low-fare carrier. IndiGo Airlines allows passengers to change the date and time of the booking of their flight via the View/Change booking facility, provided they are traveling via a Multi-City booking. When you update your ticket in the View/Changes booking facility, you will get a confirmation message displayed on your screen. IndiGo does not allow you to cancel the segment and make the ticket open dated as they do not provide open tickets. Bookings for 9 passengers can be made per PNR. You may book 2 hours prior to the flight departure for domestic flights and 4 hours prior for international flights by contacting the IndiGo call center. You may also book tickets for infants through the Interactive voice response (IVR) system.