In this paper we describe the consumer behavior of domestic spectators in international sport events organized in Hungary in 2019. Two major international sport events are researched, the Liebherr 2019 ITTF Table Tennis World Championships and the 2019 ICF Canoe Sprint and Paracanoe World Championships. We explore the settlements level social, economic and demographic factors which influence the attendance in the researched international sport events, and we calculate the generated tourism related economic impact. In TTWC and CWC we surveyed altogether n= 901 domestic spectators with the domestic spectator questionnaire and further settlements level statistical data was used in the calculations. Domestic spectators have seen on average 2.31 (SD= 1.71) event days, and the mean distance travelled by them were 128.1 km. Domestic spectators spent€ 51.7 (SD= 48.86) on average per day which is significantly higher than any respective group of domestic tourist to compare. Domestic spectators of individual Olympic sports come from those settlements to the World Championships where there is strong culture of the given sport because of high level clubs. Purchasing power seems to be another significant factor as broadband was positively associated and jobseekers were negatively associated with going to the world championships as a domestic spectator. The Hungarian budget realized from the domestic spectators’ expenditure in the Liebherr 2019 ITTF Table Tennis World Championships and the 2019 ICF Canoe Sprint and Paracanoe World Championships 572,901 EUR tax revenue. Whereas the Hungarian GDP grew 717,319 EUR because of the two events in analysis.