Airport facilities management plays a vital role in ensuring efficient operations, safety, service quality, and regulatory compliance in international cargo airports. This study examined the Key Performance Indicators (KPIs) of airport facilities management services at Sam Mbakwe International Cargo Airport, Ngor Okpala, Imo State, and Chinua Achebe International Cargo Airport, Umueri, Anambra State, Nigeria. The study aimed to assess the performance of facilities management services using key indicators such as maintenance effectiveness, operational efficiency, facility availability, safety and security compliance, environmental sustainability, service quality, user satisfaction, cost efficiency, and staff competence. A descriptive survey research design was adopted. Data were obtained from airport management staff, facilities managers, maintenance personnel, aviation regulatory officials, airline operators, cargo handlers, and airport users through structured questionnaires, interviews, and observation checklists. Descriptive statistics, including mean and standard deviation, were used to analyze the data, while inferential statistics such as correlation and regression analysis were employed to determine the relationship between facilities management performance and airport operational outcomes. The findings are expected to identify the strengths and weaknesses of facilities management practices at the two airports and determine the extent to which existing services comply with internationally recognized performance standards. The study is expected to provide evidence-based recommendations for improving maintenance planning, operational efficiency, safety, environmental management, and service delivery. The findings will be valuable to airport authorities, policymakers, facilities managers, and aviation regulators in developing strategies to enhance airport performance and promote sustainable airport infrastructure management in Nigeria.