The thesis introduces the airline industry and its interconnection with marketing on social medias. At the beginning, in the theoretical part, particularities of the industry explaining the necessity of any kind of marketing are stated. Definitions and categorization of social medias follow together with a detailed description of four of them which will be part of the later analysis. Characteristics of users are mentionned as well since they are highly important for the right segmentation and targeting. The practical part contains the analysis of usage of the chosen medias in marketing of the selected european airlines. It presents popularity of each airline and then it focuses on the most favourite ones with a purpose to reveal reasons of ...