The Airline Deregulation Act of 1978 was a watershed moment that fundamentally transformed the U.S. aviation industry from a government-controlled utility into a competitive, market-driven business. Before 1978, the Civil Aeronautics Board (CAB) strictly regulated fares, routes, and which airlines could fly where, which kept prices high and restricted flying to the wealthy. After the act was signed by President Jimmy Carter, airlines were free to set their own prices and choose their own routes. This led to fierce competition and a dramatic drop in airfares, making air travel accessible to the general public for the first time. It also spurred the creation of the "Hub-and-Spoke" system, where airlines consolidated flights through major central airports to increase efficiency and passenger loads. While deregulation led to the bankruptcy of many famous "legacy" carriers like Pan Am and TWA, it also gave rise to low-cost giants like Southwest. In 2026, we still live in the legacy of this act: while flights are more affordable than ever, the industry has become highly consolidated, and many small "non-hub" cities have lost direct service in favor of the more profitable hub connections.