Some advice, but 1st a horror story: When I was 19, I flew to Paris with my beloved "Banner" J-45 (Gibson...a gift from my grandfather)...thinking that a Mark Leaf case would be safe as a bank vault, I had it shipped in the baggage hold. Upon arriving, the guitar was in fine shape. However, when arriving back at DFW Airport a few months later, I had the excruciating experience of seeing her unloaded with a fork-lift blade RIGHT THROUGH the case! The Airline was somewhat less than helpful, and after much hasslin', agreed to pay $65, because the "instrument case was inadequate, by THEIR standards"!
Nowdays, when I fly, my guitar is strapped into a seat beside me (1/2 price ticket), or I drive...Period!
Yeah, it's expensive, but so is a fine guitar.