OK, here's the deal...I fly on the average twice a month with a bass and have been to most major airports. There are some airlines that will let you carry on a bass in a gig bag, but many won't. Some will make you gate check it, some will make you box it up in a cardboard box and send it as baggage. I don't even take the chance anymore. I bought an SKB Bass Safe and check my bass with my luggage. [snip]
Bottom line, there is no 100% safe way to fly with a bass. And shipping a bass by FedEx or UPS is no better, either. Either get used to it or don't fly with a bass.
There you go. It's a crapshoot. If you want to be sure it gets through, here's another vote for the cheap way: buy a hardshell golf club case with wheels (used, at a sporting goods store). Pad the inside and put your bass in it, inside a stout gig bag. Check it. There will be plenty of crush room and padding to protect the instrument, and no uncertainty about carrying it on. Want to know if the bass fits? Take it with you when you hunt a used case.
