

Passengers have to present the reservation code to check in with an e-ticket. Having an e-ticket also allows any passenger without luggage to check to completely skip the check-in counters and proceed directly to security.
Paper tickets are still available, airlines frequently charge extra for issuing them. by far the easiest and quickest way was using an e-ticket. In many cases paper tickets are not exchangeable in case of a necessary change of plan. You own the ticket. You own the reservation in E-tickets rather than the ticket.
New York
Jet Airways plans to extend its international operations further in North America, Europe, Africa and Asia in the coming years.
Airlines in India
Paper vs E-tickets, Flight Tickets