The Airline Deregulation Act of 1978 fundamentally shifted the industry from a government-controlled utility to a competitive market. Before 1978, the Civil Aeronautics Board (CAB) set all fares and routes; after deregulation, airlines gained the freedom to fly anywhere and charge whatever the market would bear. This led to the birth of the "Hub-and-Spoke" system, as airlines consolidated operations to maximize efficiency. In the short term, fares plummeted, and air travel was "democratized" for the middle class. However, it also led to the collapse of legendary carriers like Pan Am and Eastern, as they couldn't compete with more efficient newcomers. In 2026, we see the long-term legacy: lower real-term prices but also less legroom, more fees, and the dominance of a few "mega-carriers" that survived the decades of intense competition.