Time-saving, especially when a purchase is made via Internet;
Digitally stored tickets in the airline database, which protects You against loss, theft, or the fact that you simply forgot it;
Possibility to purchase tickets for other persons who are in another city, or for some other reason are unable to buy a ticket themselves. After the purchase the check-in process is the only thing that’s left for them.
When you travel with an electronic ticket it is preferably to save your itinerary receipt (printed e-ticket) during whole trip, this is not mandatory, but it may be required by the airport security service at the entrance, during passport control or customs inspection, as a proof that you have a return ticket.
In spite of their advantages, e-tickets have some disadvantages.
A computer crash could cause a passenger's reservation and other information to simply vanish.
Most networks have backup systems in place to prevent such an occurrence, and passenger printouts of e-ticket documents can guard against this, but it remains a possibility and has happened in the past. Also, frequent flyers, such as business travelers, might make last-minute changes to their plans and forget to use the original e-tickets or apply their value to another flight. In that case, the old paper ticket might serve as a simple reminder.With its much-improved efficiency, e-ticketing also could make some jobs, such as those at travel agencies and airline reservations desks, obsolete, adding to unemployment.