ATA's bike policy is probably the simplest out there. It costs $50 each way. The requirements do not require that you BOX your bike. You are simply required to remove the pedals and turn the handlebars. We both rode touring bikes and were not required to turn the handlebars. You may BOX your bike if you wish.

Before boarding the plane we chose to remove the chain and rear derailleurs (we figured this was the most vunlerable spot on the bike). On our trip back we did not remove any components.

I was amazed at how well our bikes were treated. I have flown with my bike before and I believe not having to BOX it is the way to go. BOXing is too much of a hassle and encourages the handlers to throw your bike around. Whereas if they see it is a bike they are more inclined to treat it better, I hope. The only damage our bikes received was a missing bar end cap and a small scratch on my rear rim. I can't be sure that the scratch was from the airline, but I don't remember seeing it earlier.

I hope this was helpfull. Good luck with your adventures.