Most people strive to become happier. Although a substantial increase in the cognitive component of happiness is limited due to heredity, there is still room for substantial gains in the affective component of happiness through environmental factors and behavioural choices. One way to become happier is to undertake leisure travel. The effect of leisure travel on happiness tends however to be short-lived, which may cause individuals in affluent nations to travel more often. A vast increase in leisure travel is also forecasted for developing and emerging industrialized countries. Rosy recollections of past experiences of leisure travel may trigger booking another trip. A growth in travel frequency and air travel in particular increases emissions that contribute to climate change. We argue that the main driver for leisure travel is the rose tinted memories of past leisure trips. However, these memories are valued against the context of peer pressure and social norms. Based on previous research findings the processes that contribute to the development of unsustainable leisure travel are discussed.