Introduction. The importance of ensuring environmental efficiency at enterprises in the transport and logistics sector is growing. The requirements for tools that are designed to ensure the implementation of this process in airports are constantly growing, which requires their constant addition and improvement. It is obvious that environmental monitoring is becoming an integral part of ensuring the strategic development of the airport and is defined by government institutions, investors and all stakeholders as mandatory. Problem Statement. International airports that are interested in their own development should try to implement the best quality tools to improve environmental efficiency. One of them is to be an adequate criterion-based assessment according to the relevant schemes and plans, which will become part of the airport's strategy for the coming decades. Purpose. Based on the defined criteria for assessing the environmental performance of international airports, to finalize and clarify the importance coefficients of these criteria, as well as to propose an effective scheme for implementing environmental measures at international airports, supporting it with appropriate calculations. Materials and Methods. The article uses expert assessment methods to clarify the importance coefficients of the criteria for assessing the environmental performance of international airports, as well as mathematical modelling methods to assess the effectiveness of environmental management. In addition, the methodological basis for ensuring environmental monitoring at airports was analyzed, and it was found that the most active researchers, in solving the tasks, used factor analysis methods and a number of mathematical modelling methods. Results. The use of the refined coefficients of the criteria importance for assessing the environmental performance of international airports proposed in this paper allowed us to assess the effectiveness of environmental management for a number of European airports and to assert that the level of environmental performance is above average, but each of them, based on a review of the proposed criteria, can refine their environmental plans for the future by minimizing emissions.
