Over the past years, the enhancement of global movements in climate change has improved the demand of sectors for better sustainable alternatives. The aviation industry, which plays an essential role in the socioeconomic development of countries and even the world, is one of these industries. The industry primarily relies on the consumption of fossil-based jet fuels that increase the emission of greenhouse gases. Based on this fact, the aviation industry has focused on protecting the environment to reduce its environmental footprint. This effort of the industry has attracted attention. One of the most significant steps in the aviation industry is the adoption of sustainable aviation fuels (SAF) and making the continuous transition to SAF use a priority. Selection of the most appropriate SAF among the alternatives for transitioning to SAFs is a complex decision-making problem that consists of economic, technological, environmental, and social dimensions and their criteria. Therefore, this study aims to investigate, model and analyze the main factors involved in adopting SAF to reduce the environmental impact of the aviation industry. In this study, which proposes a model based on the opinions of experts and the results of the literature review, the multi-criteria decision making (MCDM) approach is adopted due to the structure of the proposed model and the nature of the problem. The suitability, validity and applicability of the proposed model are supported by an application in Turkey. Within the scope of this application, the weights used in the prioritization of the criteria related to the proposed model are calculated spherical fuzzy AHP method. The study provides a detailed analysis and valuable insights for a successful transition to SAF in the aviation industry in terms of its application area, scope and results.