11.  It was the first airline to offer completely ticketless travel, eliminating the need for a large accounting department to sort and count tickets.

12.  Other airlines, including Southwest, United and Valujet, already offer ticketless travel for their passengers, with the United service available only in selected domestic markets.

13.  Other airlines are adopting ticketless travel.

14.  Some local travel agents, however, welcome ticketless travel because it saves them money in paperwork and delivery.

15.  Southwest uses the term ticketless travel but the concepts are similar.

16.  Southwest, which introduced ticketless travel in limited markets last September, became the first major U.S. airline to offer ticketless travel on all its flights in January.

17.  The apprehension is one reason Southwest has not made ticketless travel mandatory.

18.  Ticketless travel is not without problems.

19.  To help to reduce their dependence on travel agents, airlines are moving toward ticketless travel.

20.  Thus, the importance to airlines of ticketless travel, or electronic ticketing.