hey RMAThanks for the reply! i am just thinking of taking DL over B6, i have stand by tix for both of them. Never flown both of them so trying to get tips from the experts! what is a pass clarification? i work with Austrian Airlines at the hub in vienna as a supervisor, is this something like the priority list? S4 i all other airlines i gues so the lowest you can get as you said. what do you mean with availability in Y/C 1/7/144