Originally Posted by number_6
AZ only but often they let you in as a courtesy if the lounge is not too busy.
I believe that's wrong:
Complimentary access to member airline lounges when you are departing on a same day international flight or connecting to/from an international flight operated by a SkyTeam member. This benefit is available to International First / Business class customers or SkyTeam Elite Plus frequent flyers.
(from skyteam.com)