The article is devoted to the issue of determining the appropriate subject of civil liability for the provision of tourist services included in package tours. The article aims to propose a preferable model of the subject of liability based on the analysis of the main models of the subject of responsibility for tourism services existing in world practice, as well as the peculiarities of contractual relations between subjects of tourism activities and suppliers of tourism services that arise regarding the formation of package tours. In order to eliminate the existing contradictory practice regarding the subject of liability in the conditions of various modes of interaction between subjects of tourism activities and suppliers of tourism services, the article proposes to stipulate a clear model of liability for services included in package tours, which will henceforth allow forming contractual relations in the field of tourism on the basis of this model. In particular, taking into account the fact that the tour operator forms package tours and, within the framework of the latter, separately and/or together with the travel agent, organizes the travel of the consumer, it is suggested to determine mechanism of liability of the subjects of tourism activities for the provision of these services- as more effective and most consistent with the essence of the contractual relations of suppliers and subjects of tourism activities, except from those tourism services, for which the law provides for the liability of the service provider.