Originally Posted by mikeparis75
What are the codes P, F and A? Is J first class? Is C Business class? What are D and I? Are the upgrade codes O and W (and maybe A)? I understand Y N K and H to be coach fare codes and Z to be the discounted business class. Am I right?
First of all - did you read the first post in this thread? The award/upgrade classes are listed in there.
P, F and A* are First class, JCDIZ and O* business, and everything else is economy (W* X*) (* = award/upgrade class). And note that Sabre doesn't give you all booking classes, as well I always try another method if the results seem to be a bit strange (e.g. 0 availability in First class... though in this case it is correct). BTW: check the note in the first post about long-haul award classes display.