You have asked a question that has been asked many times and the simple answer seems to be C - business class and Y - unrestricted coach qualify for miles. Other fares may qualify but........All the airlines seem to have different restrictions and these restrictions can even change for individual destination on the same airline. I have been told that international tickets booked in V class on Groupo Taca qualify for miles but domestic tickets on Taca Peru a part of Groupo Taca do not qualify for miles. A travel agent told me that tickets booked in W class qualified for mileage but Distancia the frequent flyer program disputed what the travel agent told me. There is an old 17 page Latin Pass posting in this forum that might be of more help. This link discusses fare codes for another promotion of Groupo Taca and might be of some help http://www.grupotaca.com/infodata/ge...OTICIAS&lang=1 Good luck.