The article summarizes the research of communication in Czech tourism during the years 2020-2021 with the use of digital data stored online and taken not only from blogs but also from discussions and online reviews posted by clients of six selected travel agencies. The objective of the research was to find out the frequency of different forms of communication as well as the choice of clients´ language resources of mutual communication between clients and agents of selected travel agencies. The results of this article are related not only to the satisfaction of clients with the professionalism of travel agents, delegates and travel guides, but also to the level of services and their organization offered by six travel agencies. Thus, the part of the research´ results are factors that influence the preferences of customers and the possible recommendation of the agency through the online environment. These results help to understand better the changes that the tourism sector experienced during the pandemic years 2020-2021 and that, currently, can lead to the possible future improvement of communication. Moreover, the results offer the detailed comparison of communication before and after the pandemic.