Overall, transport consumes 94% of tourism-related energy use, compared to accommodation at 4%, and other activities at 2%. Almost 80% of tourism’s contribution to global warming is associated with leisure travel. In the near future, tourism will grow fast, and it seems necessary to introduce mechanisms to internalize leisure-travel-related CO2 emission costs, if climate change is to be managed. Drastic reductions in leisure travel would be needed to mitigate emissions worldwide. Excessive transport usage has led to high social costs and has caused a variety of negative externalities, such as traffic congestion; land consumption; accidents; air and noise pollution; destruction of the visual landscape; and waste in the use of resources such as raw materials, energy, and so on. However, tourism transport has become a crucial part of the tourism industry that generates substantial economic benefits worldwide. Therefore, the target should be to control the growth of tourism transport usage in order to make it environmentally sustainable, without compromising the ability of people to meet their need for mobility.