My wife and I have the chance to travel internationally. It could be fun, but I don't want to leave my Teles behind. I have never been comfortable using a standard case for a guitar with airline travel, a friend of mine had his prize Strat bashed up that way by the airlines. The big heavy travel cases are... big and heavy.
What about taking the neck off and packing the guitar body and neck separately? Has anybody done this? I wonder if there are cases for this approach? It sure seems like this would be way more secure...
I travel a lot to southeast Asia, and this is what I do. Well, I don't pack the neck and body separately...what I do is just leave the guitar body in the gig bag, unbolt the neck, and wrap it in bubble wrap, sometimes leaving it in the gig bag and folding the top/neck part of the bag down so it fits more easily in an overhead compartment (or wherever there's stowage).
Look into threaded neck inserts. There's a few threads in the archives (see what I did there?

) that explore that modification in detail. You want to get someone who really knows what they're doing to have it done for you, but I think the results are worthwhile if you travel a lot with a four-bolt neck. Threaded neck inserts mean you can unbolt the neck as many times as you need to without weakening the neck/body joint by stripping the screw holes (the stock 4-bolt neck setup wasn't designed to be unbolted over and over again, and if you do it enough times, no matter how carefully, you'll eventually lose wood or crush the threads in the body).
This mod can give you a lot of peace of mind when travelling. You won't have to worry about being forced to check your guitar as baggage. Another side benefit is that it makes the neck/body connection rock solid when you bolt the neck back on.