The study examined how the personality traits, manifested during serious leisure experience, i.e., experiences that involve the acquisition of special knowledge or techniques and the participation required to achieve the expertise necessary to express them. This study also investigated how such subjective well-being affected behavioral intention, specifically, the intention to use the same leisure facilities again and to spread this information to acquaintances by positive word of mouth. A survey was administered to 727 research subjects selected from pre-registered panels enrolled by an online research organization. The main constructs examined in this study were measured on 5-point Likert scales using multiple items. A structural equation model was employed to verify the proposed conceptual model and the relationships among variables. The results revealed that, of the personality traits, participants high in extraversion, openness to experience, and agreeableness felt high levels of life satisfaction and positive affect, i.e. a sense of subjective well-being. Second, users who felt a high level of subjective well-being, specifically, high life satisfaction and positive affect, also indicated a high level of behavioral intention. Finally, the academic and practical implications and limitations of the study, as well as future research plans involving the personality traits underlying serious leisure experiences are discussed.