Originally Posted by number_6
I would guess that South American regional flights are the most likely to require paper tickets.
Not so - Qantas issued an award ticket for me and my partner, including LanPeru flights Juliaca-Arequipa so even these small airports have E-Ticket capability. LAN do have their act together pretty well in some of these very small airports!
Another Qantas award ticket for next year was a paper ticket - because it involved travel from Croatia (Dubrovnik), so in some instances the type of ticket varies by the country - if your ticket touches one of these countries, paper tickets must be issued.