Originally Posted by
fedechat
As far as I know, you can use the Argentina LAN's version and get the resident fare without any problem and use the online check in or kiosk, but it will work as long you don't have drop any luggage...
Given that you must put your passport info in to get the ticket issued and to get the boarding pass issued, it is not difficult for these to be red-flagged while boarding (or at bag drop).