Star Alliance Gold (with Air Canada) Upgrading on United
Welcome to FT!
What you want is a *A upgrade. The only way is to book a full-fare ticket on UA - C/D in business to upgrade to First or Y/B in economy to upgrade to business and use miles. You need to look at the *A award upgrade chart on the Aeroplan site.
Also, you can look at this
thread from the AC forum.
Last edited by UAPremExecflyer; Aug 20, 2013 at 2:00 pm
Reason: added welcome and thread link