The only thing JC ever did right in his life was signing the deregulation bill. Before that, very few people flew. Since, it has tripled. The market decides who makes it and who doesn't. Not government.
Carter was an abject failure in everything he did, and deregulation was no exception. Air travel didn't grow because of deregulation, it grew because of a rapidly expanding economy during the 80s and 90s. It would have still happened if we would have stayed regulated, but the industry would be a hell of a lot more stable. Deregulation is a failed experiment. Time to go back to what works.