reetaji E-ticket is an elctronic ticket which can be booked in the internet. its cheaper because the following reasons. -airlines save manpower for issueing paper tickets . -if you buy e-ticket directly from a airline website then the airline donot need to pay comission to the travel agent. - airline saves money on ticket printing. after your booking you will get an email of the ticket conformation,then print it and go direct to airport on the day of your departure. In the airport, the airline will give you boarding card. some airlines like.Lufthansa's passenger donot need to stay in a long line at the time of boarding because they have an electronic gate for the e-ticket passengers,so that you can directly go to the plane.it's so simple. in these days it's cheaper to fly Delhi by e-ticket because many airlines are operating a dailly flight to delhi and there is price compitition between airlines.india's growing economy will attract many others airlines to come to it's capital,delhi,in near future and we all will be benifited by even more cheaper e-tickets in coming days,i hope so. so if you are going to nepal then buy a e-ticket to delhi by AIRLINE'S WEBSITE and when you get in delhi, you can buy a papaer ticket to Kathmandu in the delhi airport,which is also cheaper in these days.