This case study describes the work of Iberostar Hotels and Resorts (Iberostar) to decarbonise, so that learning to date can be shared across the Travel & Tourism sector and beyond. It provides a scalable roadmap for decarbonisation based on the success of Iberostar’s programme. If others adopt the same approach, they will help to accelerate pro-sustainability efforts to decarbonise, to mitigate climate change, and to boost climate adaptation efforts.