We have J tickets acquired via mileage redemption from LAX to South America. I haven't been able to figure out if these get us Flagship Lounge - a cash purchase would have been labeled as a Flagship flight, but I am not sure about mileage tickets as it doesn't reference Flagship. Our outbound flight has a stop at JFK and our inbound stops in DFW. If it doesn't get us Flagship, does it get us the minimal Admirals club? Thanks so much!
Where in South America are you flying? That will determine whether you get Flagship Lounge access (northern SA doesn't get Flagship access, deep SA does). No matter what, international business class gives you access to the Admirals Club. AA doesn't distinguish between paid J or mileage J when it comes to lounge access.