Originally Posted by
mcwussow
So far in all the searches I have tired if it is CS+ then that also means that there is a upgrade fare available from a slighly discounted fare (B class). If it is a CA+ then it seems that there is a upgradabe available from a full Y fare.
What tool did you use to confirm the correlation between CS+/CA+ and upgrade award inventory? Obviously it was KVS for the former? Was it the telephone for the latter?
Edited to add: I'm trying to upgrade an IAH-LGW flight in early May from a "Y" fare. KVS shows CS- CA+, but there is no upgrade inventory available on that flight according to NW.