I bought a classical guitar case made in Germany, bought it in Prague, for about $120, that fit my 1933 Gibson L-OO after a little adjustment; it was not quite deep enough at the heel end of the body, so I carefully pulled away the lining material and cut out some of the styrofoam at that point. Works great and it got one guitar home from over there on the plane without a scratch, but I'm saving for a Mark Leaf case for it. Wouldn't put it on a plane otherwise. I have never had any accomodating flight attendants put an instrument in the coat closet or any of the stuff people say they've had done for them. The best I've gotten for guitars is that they lay it by hand on top of the pile in the luggage compartment. It still goes through the gorilla cage when they take it off the plane. If it's a fiddle or mandolin I just carry it on and stick it in the overhead.

Chet