From the late 1970s onward, many countries shifted from administrative control of entry, routes, and fares to market‑based competition, with the U.S. Airline Deregulation Act of 1978 as a pivotal moment. In the United States, the Act phased out the CAB’s authority over routes and prices, liberalized entry standards, and ultimately abolished the Board, allowing airlines to choose networks and fare structures in response to demand rather than regulatory allocations. The aim was to reduce prices, increase efficiency, and encourage innovation; over the following decades, average real fares fell and passenger volumes rose sharply, although competition also produced cycles of overcapacity, consolidation, and bankruptcies.
Internationally, liberalization unfolded more gradually through bilateral and regional agreements. The U.S. pursued “Open Skies” accords that removed capacity and pricing restrictions on designated carriers, while the European Union progressively created a single aviation market in which EU carriers could operate freely within the bloc. Deregulation and liberalization encouraged new business models: low‑cost carriers focused on high‑utilization fleets and simplified products, regional airlines fed hub‑and‑spoke networks, and alliance and code‑share arrangements allowed global network coordination without full mergers. At the same time, liberalization intensified debates over service to smaller communities, labor relations, and the appropriate role of government in ensuring both competition and network connectivity.
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