Originally Posted by
thelark
I still have a bunch of paper $25 UA CS discount certs - are these still usable? Can they be used with miles & points? Thanks in advance.
Do they have an expiration? T&C's will probably also preclude them from being used for anything other than purchasing tickets. Therefore it is doubtful that you can use them for an upgrade co-pay. However you could always ask, maybe a gate agent somewhere will take them.