I left a camera on an Hawaiian Air flight last November, dropped on floor apparently. I called their number in Maui and was given a number for the Big Island since the flight had already gone back.
I was told they had found the camera in Maui but sent it back to Kona. A nice lady in Kona instructed me what to do (open a FedEX account and call back with account number) and within two days my camera was delivered to the hotel in Maui where we were.
Sometimes the better instincts in man prevail. Interestingly, one picture had been taken of a non-descript baggage tug. I guess they tested to make sure it wasn't a you-know-what.
So, keep the faith!