Sorry to hear that - I suppose mileage varies. My friend has a real fear of flying, and Xanax makes him not care at all (or about anything else, really - it's a good thing his wife was around to keep in line).

On the flip side, I sat next to a woman who had taken two Xanax and drank two screwdrivers during a three hour flight, and still gripped my hand (a complete stranger) during landing.