Quote Originally Posted by ddagencylv View Post
No upgrades. LH doesn't allow it for OAL.
Depends on agreement (just like any other carrier, really) and maybe luck (a friend of mine from AS got upgraded on DL recently). UA can pay for a ZED in C on LH, but of course it costs more than a ZED in Y. I think most (but not all) Star Alliance carriers have some kind of agreement like this in place.