This paper seeks to define the problem of interdependence of traffic in the economic system with tourism as the second branch of the economic system. In a modern globalised world, there is growing interdependence between different infrastructure and economic systems. This can be seen in particular in the transport and tourism system. This interdependence has a positive and negative impact on the functioning of these systems as independent. Therefore, based on the elaborated research problem, the problem of this research is the analysis of the observed interdependence. The aim of this paper is to analyse the relationship between the movement of international tourism and passenger transport and their interdependence. The methods of operation used in this paper are indicative and Deductive method, method of analysis, method of generalization, method of proof, method of descriptions and method of compilation. The Indicative and Deductive methods were used in describing transport and tourism as individual systems, as well as the method of generalisation and descriptions. The analysis method was used in analysing the connection and interdependence of the two systems, as well as the method of proof, and the compilation method was used through most of this work.