Originally Posted by
YEGTigger
Only if R>0. Then you can grab an upgrade instantly on a Latitude fare. Once you are waitlisted, it is status then fare class.
I think it's kind of in between. If R>0, on a Latitude before the upgrade window opens, it's immediate regardless of status. If waitlisted it's status of the upgrader then fare class. At the gate it's based upon status of the person who is flying.