How to shrink-wrap (sorta) a bike for air transport, a guide for the rest of us:
Unfasten the handle bar and rotate it 90 degrees.
Put pedals and tools for re-assembly in bag, tape bag to frame.
Envelop the bike in two huge plastic bags made for strollers. Remember that nobody's going to award you points for style.
Hey, you're done, and the result looks like this: