Originally Posted by
plbonilla
On the three class transcon (specifically LAX->JFK), if I received the complimentary upgrade to business (as a PlatPro), is it possible to upgrade from there to first using miles and cash? My thinking is no, but it seems like a special situation where a domestic is three classes.
Nope, double upgrades have never been possible on any AA 3-class flights (of course not including the very rare instances of oversold cabin rolls or other irrops, etc.).