Abstract
The Airline market is facing problems across the years. Before, national companies were leader in their countries, but with the opening of the airline market, the deregulation of the industry and the globalization phenomenon thousand of new airlines have borne. What does it mean? Traditional Airlines companies have now to make the differences with low cost ones in order to keep their competitive advantages and remain references on the global scale. Thanks to this largest offer, people take more and more the airplane. In the US, the commercial aviation has increased importantly since the end of the World War II. Today, in a low fare environment, the main companies have decided to create partnerships with smallest ones, in order to be dominant and to be difficultly competed. (Air France-KLM for instance which is now the leader on the global scale.).
