When the U.S. Congress adopted the Airline Deregulation Act in 1978, few could have predicted how profoundly the decision would reshape civil aviation in the long term. What appeared to be a technical change to the regulatory framework marked the end of an era in which the government and regulators determined which airlines could operate on particular routes and at what prices. In practice, it was the beginning of the modern air transport market as we know it today.

Until then, the U.S. market had been heavily regulated by the Civil Aeronautics Board, an authority that had for decades controlled airline market entry, approved routes and regulated ticket prices. The system had been created at a time when aviation was still a young industry, and regulation was intended to ensure stability, continuity of service and the financial sustainability of airlines. By the 1970s, however, there was a growing belief that the same system had become an obstacle to competition, innovation and lower fares for passengers.

The deregulation of 1978 did not mean the abolition of safety oversight. Flight safety remained the responsibility of the government and regulatory authorities. The change primarily concerned economic regulation: airlines gradually gained the freedom to set their own fares, launch new routes and withdraw from those they considered financially unsustainable. The Civil Aeronautics Board was subsequently phased out, with its economic powers disappearing by the end of 1984.

The consequences were profound. The U.S. market opened up to competition, fares fell on many routes, passenger numbers increased and airlines began developing new business models. Instead of networks shaped by regulatory decisions, airlines increasingly built their own connecting systems. This gave rise to the hub-and-spoke model, in which traffic is concentrated at major hubs and passengers are distributed through them to both smaller and larger destinations. The model became one of the defining features of U.S. aviation after deregulation.

However, deregulation did not bring only positive consequences. Competition became significantly more intense and the market far less forgiving. Some airlines expanded, others disappeared, while others became part of larger systems. In the decades following deregulation, the U.S. market went through a wave of bankruptcies, acquisitions and mergers. Once-prominent names such as Pan Am disappeared, while TWA, following its bankruptcy in 2001, was absorbed into American Airlines. The loss involved more than the disappearance of a single airline. It also marked the fading of part of the symbolism of an earlier era of aviation, when individual carriers represented national prestige, global presence and an almost romantic image of air travel.

The consolidation of the U.S. market continued in the years that followed. The mergers of Delta and Northwest, United and Continental, and American Airlines and US Airways shaped the present structure of the U.S. airline market, in which a small number of major carriers control most domestic and international traffic. Deregulation therefore opened the door to greater competition, but over the long term it also contributed to market concentration. Commercial freedom allowed new airlines to enter the market, but it also demonstrated that long-term survival depended on having a sufficiently strong network, access to capital, cost discipline and the ability to adapt.

It was precisely here that the U.S. experience became relevant to Europe. Although the European airline market had a different structure, stronger national interests and a significant role for state-owned flag carriers, U.S. deregulation demonstrated what happens when a market is opened to competition. Europe did not follow the same path immediately or at the same pace, but over the following decades it gradually reached a similar conclusion: closed national markets and bilateral agreements were no longer suited to growing demand, European integration and the changing realities of air transport.

European liberalisation took place gradually through several regulatory packages. The key process began in the late 1980s and was completed with the creation of the European single aviation market in the second half of the 1990s. From 1997, airlines from European Union member states gained significantly broader operating rights within the common market, including greater freedom to launch routes between member states. Within its own political and regulatory framework, Europe therefore implemented a transformation similar to the one the United States had begun almost two decades earlier.

The change created the conditions for the rise of European low-cost carriers. Ryanair, easyJet, Wizz Air and other airlines took advantage of the liberalised market, secondary airports, simplified fleets and aggressive pricing strategies to transform passenger behaviour. Flying was no longer reserved primarily for business travellers, wealthier citizens or large national airlines. In Europe, air travel became a mass form of transport, often competing on price with cars, buses and trains over longer distances.

For national airlines, liberalisation was far more painful. Companies that had operated for decades within protected national markets were forced to confront competitors with different cost structures, organisational models and political obligations. Some carriers consolidated into major airline groups such as Lufthansa Group, Air France-KLM and IAG, while others disappeared, contracted or struggled with profitability over the long term.

Today, Lufthansa Group includes several airlines, among them Lufthansa, SWISS, Austrian Airlines and Brussels Airlines. Air France-KLM was created through the merger of the two major national airlines of France and the Netherlands, while IAG brings together British Airways, Iberia, Aer Lingus, Vueling and LEVEL. In practice, the European market has remained formally open and competitive, but a large share of traditional airline traffic has become concentrated in the hands of a few powerful groups.

This consolidation was a response to a new market reality. Large airlines needed to improve efficiency, strengthen their negotiating position with aircraft manufacturers, suppliers and airports, optimise their route networks and defend themselves against increasingly strong competition from low-cost carriers. In that sense, mergers were not the opposite of liberalisation, but one of its consequences. The free market created room for competition, but it also demonstrated that only airlines with sufficiently large networks, strong capital and flexible business models could survive over the long term.

In this respect, U.S. deregulation in 1978 and European liberalisation in the 1990s are two chapters of the same global story. The market was first opened in the United States, after which Europe created a single aviation market through its own political and regulatory framework. The result was similar: greater competition, a wider choice of routes, lower fares in many markets, strong growth in passenger numbers and mounting pressure on traditional business models.

Nevertheless, liberalisation did not solve every problem. As in the United States, the market became more efficient, but also more brutal. Smaller airports often depend on a handful of routes or a single dominant airline. Passengers gained access to lower fares, but also faced more complex pricing structures, additional charges for services and less flexibility. Airlines gained greater commercial freedom, but also greater exposure to fuel prices, crises, labour disputes, regulatory changes and fluctuations in demand.

The deregulation of the U.S. airline market in 1978 is therefore not merely an American story. It marked the beginning of a broader transformation of civil aviation from a regulated, exclusive and relatively closed industry into a global, competitive and highly dynamic market. Europe followed the same path later and more cautiously, but the consequences were equally significant. Today’s European route network, the dominance of major airline groups, the rise of low-cost carriers, the pressure on regional airports and the accessibility of air travel to millions of passengers cannot be fully understood without looking back to 1978.

That year marked the moment when aviation ceased to be an industry shaped primarily by regulators and became one shaped by the market, competition and passengers. U.S. deregulation was the first major test of this model. Europe later adapted it to its own circumstances and turned it into one of the foundations of modern European air transport.