Quote Originally Posted by italgreco View Post
CO are Star Alliance, you should have ZED Low fares in C class, so why wait for an upgrade?!
Just because a carrier is a member of Star does not necessarily mean that we get Z-Low especially in C. CO for e.g. is Z-L in Y but Z-M in C same applies for UA staff on US.

Looking further Air China also a Star member does not offer pass travel at all since their company policy prohibits it. At least that applies for UA staff.