The purpose of the research was to examine how the quality of service provided by the employee and KARST dealing with the quality of the systems and the information systems affect the satisfaction of the users. Second purpose was to find out which of three factors play greater or lesser roles in affecting the customers of the KARST by examining customer satisfaction and the causal relationship between them so that it can aid in finding areas that need to be further developed or improved when designing and operating airports as well as improve customer service by KARST employees.