Examining the interrelationships between critical success factors (CSFs) is of importance for the successful development of PPP airports. Many studies are available for the identification of CSFs for infrastructure projects, but very limited research have been conducted so far on investigating the interrelationships between the CSFs of PPP airports. The study is based on the institutional theory, which considers the exploration of the relationships between different institutional factors. The results show that Process Characteristics have comparatively more impact on Public Characteristics and, similarly, Cooperative Environment has more impact on Process Characteristics. However, Process Characteristics have a less significant impact on Private Characteristics. The study also revealed that to achieve high-quality services and the protection of public interest under a PPP mechanism, proper government supervision is required. Moreover, customers’ satisfaction and their opinion are also responsible for the achievement of high-quality services and better value for money.