When I was an undergrad I was very interested in the deregulation of the airlines. I think it was because I wanted to be a pilot at one point in my life. Which was really a product of how I (mis)-interpreted the seventh grade aptitude test that suggested I would make a good aeronautical engineer.
Anyhow, the problem of airline congestion at airport terminals is really a pricing problem. Most airports are owned and operated by the local municipality, inefficiently of course. Read Lynn's excellent post on some of the issues here.
Keywords: Deregulation, Airlines