Airlines are notorious for providing lower returns on investment when compared with other corporations. As a result, airline executives implement business strategies aiming to obtain higher than normal financial returns. With the liberalisation process that airlines have enjoyed around the world, some carriers have been quite creative in fostering new approaches in terms of their business models, product differentiation and cost reduction. In addition, because of the international multiple-business related nature of airline operations (which includes aircraft manufacturers and maintenance, distribution channels, and airport logistics), these characteristics make airline strategic management a very complex exercise. A number of approaches have been used to explain strategic issues related to airlines. One of them is Shaw's (2011) application of Porter's classic Five Forces model to the airline industry, a framework for analysing competitive forces, for instance, rivalry, substitution, new entry, power of customers, and power of suppliers. Scholars have also focused their attention on analysing airline strategic decisions relating to a number of managerial issues, with a particular emphasis on mergers and alliances (Gudmundsson and Lechner, 2011; Iatrou and Oretti, 2016). This chapter is structured into four main sections. The first one provides some generic strategies. The second section focuses on airline differentiation strategies and niche products, mainly charter and leisure carriers. The third section tackles growth strategies, examining the four distinct strategies proposed by Ansoff's Matrix: market penetration, product development, market development and diversification. The fourth section considers different strategic growth methods, including organic growth, mergers and acquisitions, industry cooperation, franchising. In order to illustrate these concepts, examples from airlines around the world are discussed. The chapter concludes by extracting from this discussion lessons that can guide future trends in the airline industry. Generic strategies The deregulation of air transport in different parts of the world has resulted in airlines becoming more susceptible to the pressures of competition. Before deregulation, the industry was predominantly characterised by a wide network of destinations where passengers flew in comfort and luxury. Airlines operating in that environment projected a brand associated with status, perks and, as a consequence, an expensive product affordable only to a few. This business model is traditionally called the full-service network carrier (FSNC). In contrast, in most countries, the deregulation process resulted in the flourishing of airlines, operating with diverse business models. The most common airline business model following deregulation is the low-cost carrier (LCC). LCCs try to focus on providing an efficient and punctual service while eliminating unnecessary costs and perks, offering only the basic elements required for a safe flight. As a result, LCCs are associated wit...