This paper explores various options to visualize tourism transport flows with spatial analysis tools and show them on maps. To facilitate implementation of these options, procedures for data preparation and map creation are explained through a set of practical instructions. This can give guidance to tourism researchers who are looking for effective ways to map flow data with geographical information systems. Special attention is paid to free and open source software as high costs of commercial software often limit opportunities to study these data. All procedures have been developed and tested using a database of interactions between world regions and some samples of results are shown.