There is not a boarding time on any airline ticket; you can book a flight for yourself and look at the issued eTicket. Your ticket will only have a departure (a

There is not a boarding time on any airline ticket; you can book a flight for yourself and look at the issued eTicket. Your ticket will only have a departure (and perhaps arrival) time. Some airlines print a boarding time for their flights onto their boarding passes, or show it in their app. This is often a fake number simply computed by deducting 30 or 40 minutes from your flight's departure time; it's certainly not adhered to very closely or involved in most contract of carriages. One reason for this is that an airline is usually not involved in issuing all of its boarding passes, and so many boarding passes simply do not have a "boarding time" on them. Air India is perfectly capable of issuing boarding passes for United, but are unlikely to have easy access a "boarding time" from United (since it's not very important). United makes passenger obligations clear -- arrive 15/30 minutes before a domestic/international departure. Otherwise, it's an IDB.