I would take it to an AT&T store and have them pop the SIM card out (not easy on an iphone) and look up the owner. Once the iphone locks you are SOL if you don't know the password. I personally would be afraid if you turned it in to lost and found or airline employees that it would never makes its way back to the owner.
I take it the phone isn't giving you the option to make the "emergency call?"
Last edited by Dunbar; Feb 11, 2009 at 2:25 pm