There is no quick solution to congestion and delays at New York's John F. Kennedy International Airport that ripple throughout the U.S. air transport system, observers say. Analysts note flight limits would shift flights to Newark, N.J., which also is congested. Almost 1.7 million people will travel through New York's three airports during the Thanksgiving travel season. Meanwhile, outdated technology at Philadelphia International Airport also results in delays that spread through the U.S. system. The FAA eventually plans to move to a satellite-based system for tracking flights, a move that will ease delays.