In recent years, tourism businesses have had to face rapid changes brought about by modernisation, internationalisation, social changes, and the higher demands of tourists. These features have an impact on the current level of tourism services and determine the overall economic environment on the supply and demand side. To keep up with global and national competition and these new emerging processes, it is important for managers to discover and monitor how key global figures can have an impact on the future development of tourism units in the hopes to achieve further sustainability growth. Managers should adapt to the changing environment by using new methods and strategies that make tourism units sustainable for future generations. One of the main indicators measuring economic sustainability is gross domestic product, as it captures the market value of the measured services or goods in general. For this reason, it is worthwhile to determine what the interconnections with regard to gross domestic product and tourism variable are. Through this relationship, it is possible to evaluate the health of a certain economy of tourism that can serve as a viewpoint for the management of tourism businesses in a certain state. This research looks at the relationship between the chosen indicators from the tourism sectors of the Czech Republic and Norway. Its purpose is to identify the relationship between the chosen general economic indicators measuring tourism economic prosperity, such as overall gross domestic product for international travel expenditures within a 7-year period. The main aim of the research is to determine the relationship between the chosen indicators through comparison and trend analysis. The data will be examined in order to determine the relationship between the chosen variables, as well as the strength of the dependence of both variables. Based on these findings, further research may use gross domestic product as one of the crucial indicators for the measurement of economic sustainability with respect to its added value for tourism businesses and management.