The issue of climate change is known to most tourism practitioners and educators. In the tourism industry, the general consensus is that sustainable tourism can only be achieved by reducing tour carbon emissions. Therefore, it is necessary to have an evaluation mechanism for determining the carbon reduction performance of tour packages that both tour package designers and tourists can use. We invited tourism practitioners and scholars in Taiwan to evaluate 44 low-carbon tour packages. Confirmatory factor analysis of their evaluations found that tour packages that reduce carbon emissions in six dimensions: transportation, food, accommodation, activities, and offer creativity and provide a good product image can be competitive in the overall tour market.