From a previous literature review, there are rare studies that focus on integrating Sustainability Values (SVs), the Theory of Planned Behavior (TPB), and Unified Theory of Acceptance and Use of Technology (UTAUT2) to predict potential travelers' behavioral intentions. In light of this, the research is designed to propose a comprehensive understanding of potential travelers' choices for sustainable hospitality businesses by integrating SV, TPB, and UTAUT2 into a theoretical framework, by moderating the effect of age. Prior studies have mentioned TPB identified the role of attitude, perceived behavior control, and moral obligation in generating intention. However, the use of TPB and the extended UTAUT model to explain pro-environmental behavior is lacking. Data was collected from 34 northern, 2 central, and 6 southern Taiwanese consolidated headquarter travel agencies. Email questionnaires were distributed to 630 individuals in 42 travel agencies. The proposed model will be also examining, with an AMOS procedure of structural equation modeling (SEM), the maximum likelihood method of estimation. The results indicated that (1) SVs are positively and significantly impacted by pro-environmental behavioral intention; (2) SVs are positively and significantly impacted by attitude, social influence, perceived behavioral control, and habit respectively; (3) attitude, perceived behavioral control, and habit is positively mediated by the effect between SVs and pro-environmental behavioral intention, respectively; (4) the social demographic variable of age is positively moderated the effect between SVs and social influence.Keywords: sustainability values; theory of planned behavior; unified theory of acceptance and use of technology 2; pro-environment behavioral intention