As its definition, travelling can contribute to individual well-being because tourists have better opportunities to detach from their daily life environment, to provide pleasurable experiences, to do what they love to do. Although previous research widely accepts this belief, there appears that this belief has neither a sound theoretical foundation nor sufficient empirical evidences. Through the comprehensive review of the literature on the health and well-being benefits of travel, this study examines if the tourism activities promotes psychological happiness and stress relief benefits. The results show that at least two theories can be utilized to prove the effect of tourism on psychological happiness and four theories are able to demonstrate the stress relief benefits of travelling. Previous empirical research also shows that tourists feel happier on their trips than everyday life and travel plays an important role in reducing the inevitable stress that people have in daily life and work. Although this study is a conceptual paper and thus has various limitations, it provides significant academic insights and raises important issues that the researchers consider for the future tourists’ wellbeing studies.