The tourism market has been restructured centering on Online Travel Agencies (OTA). It has been several years since the importance of observing changes in OTAs has been stressed to explore changes in the tourism industry. Against the backdrop, this study investigated “the effect of OTAs’ selective attributes on trust and satisfaction” and “the mediating effect of trust on OTAs’ selective attributes and satisfaction”. The results of the analysis are as follows: first, among the selective attributes of international OTAs, customer service, price, information sharing, and customer relationship management were found to have a positive effect on trust in that order. On the other hand, the selective attributes of Korean OTAs had a positive effect on trust in the order of customer relationship management, price, customer service, information sharing, and convenience. Second, the selective attributes of international OTAs, such as customer service, price, customer relationship management, and convenience had a positive effect on satisfaction in that order, while the selective attributes of Korean OTAs had a positive effect on satisfaction in the order of customer service, price, and customer relationship management. Third, trust was found to have a mediating effect on the relationship between the selective attributes of international OTAs, such as price, customer service, customer relationship management, and satisfaction. On the other hand, trust showed a mediating effect on the relationship between the selective attributes of Korean OTAs, such as price, customer service, convenience, customer relationship management, and satisfaction.