The aim of this diploma thesis is to analyze a buyer decision process of consumers in travel industry with a focus on outgoing tourism. The diploma thesis is divided in six parts. The first part focuses on theory of consumer behavior followed by marketing of services with an emphasis on tourism. Next part covers buyer decision process of consumers in travel industry based on results from analysis of a questionnaire. These results are integrated with agency data. A summary of acquired results is compared to all phases of buyer decision process at the end of this thesis.