Upgrading on CO with UA FF# // Booking with CO first
 

I'm gold on CO and UA, but I'm trying to take a CO flight.

If I put in my UA# in there and book on the CO website, do I get auto upgrades?

If not, can I put my CO# in there, get the upgrade, and then switch out the FF# at the airport? Then just show them that I'm gold on both airlines. (does that work?)

Wirelessly posted (BlackBerry9630/5.0.0.591 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/105)

As of today upgrade reciprocity went into effect but it is only at the airport, not in advance. Betting on that being successful for securing an upgrade is a bad idea IMO.

You can put your CO number in and change it after the upgrade clears. Many folks have reported success with doing such so long as a person isn't involved (i.e. do it at a kiosk or during OLCI). If a human gets involved they might just bounce you from the upgrade since that is technically what the rules say should happen.