In this paper, the advantages of the application of information technology in tourism for all participants in the tourism industry are analyzed. It is emphasized that traditional travel agencies have largely transitioned or are in the process of transitioning to online business via the Internet. Also, the fact that the Internet affects the reduction of the mediating role of travel agencies is highlighted. The paper deals with the research of the application of the Internet in the business of travel agencies, with a focus on opportunities for improving marketing performance. The goal of the research is to analyze the impact of modern communication methods and social networks on the quality of the offers of travel agencies and on the development of relations between agencies and customers. The possibility of improving the image of tourist agencies by using modern information and communication technologies was also analyzed. The results of the research show that high participation in information technologies has a positive effect on increasing customer loyalty and improving the image of the agency. It is concluded that the business success of travel agencies in modern society is largely based on a high level of application of online business in combination with traditional business.