This paper develops and explains an input–output model to quantify the carbon footprint linked to residents' and visitors' tourist consumption in the Spanish economy between 1995 and 2007, thus offering a rare longitudinal review of a national carbon footprint. Two measures are calculated: a domestic one similar to the producer responsibility criterion and a total measure that includes imported intermediate and final goods, similar to the consumer responsibility measure. The important role of tourism in Spain explains why its domestic carbon footprint represented 10.6% of total CO2 emissions in 2007. Visiting tourists represented 47% of this figure, households 36%, business tourism represented 14% and public administration expenditures 3%. By industry, transport (26%) was positioned as the highest emitter in 2007, with hotels and restaurants the second (21%) (benefitting indirectly from energy and environmental efficiency improvements over the period). The Spanish reliance on imported oil products and the growing importance of foreign-based air services has caused the total carbon footprint of tourism to increase by more than 100%. Therefore, climate change mitigation plans must include imports, and action must take place through the whole global production chain and in the transport sector, particularly air transport. Future mitigation policies are discussed.