Because of restrictions in the number of luggages I could take here w/ me, the only option I had was to take my cheaper guitar, unbolt the neck, and place it in my luggage, carefully wrapping in layers and layers of clothes. Not something I'd recommend doing with your best guitar or if you can avoid it, but this time, I had no alternative. And worst case scenario, I'd have bought a new one here if anything happened.
At any rate, there's just no way I'd take anything too precious w/ me, certainly not my main guitar.
I'm still trying to find a solution for our flight to Russia in January.
One of my buddies who plays gigs across Canada regularly told me he never had problems taking his electric w/ him onboard in a gig bag and passing it as his hand luggage, but I haven't tried that myself and non-domestic flights might have different policies.