Self-service check-in kiosks are increasingly recognized as a cost-effective solution for expanding check-in capacity without the need for terminal building expansion. These kiosks serve as essential airport infrastructure, providing time savings for passengers, cost reductions for airlines, and optimized space utilization for airports. This study aims to investigate whether the claimed 49 percent reduction in required check-in space with the adoption of self-service check-in kiosks is valid and examines how various factors influence this space saving. A small sized airport with an average annual traffic of 1 million passengers and 500 Typical Peak Hour Passenger (TPHP) serves as the case study. Through static analysis, the study assesses the impact of failure rates associated with self-service check-in kiosks on overall space savings. The findings indicate that failure rates significantly diminish space savings, underscoring the importance of technology reliability in maximizing efficiency. Additionally, space savings are influenced by passenger demand, passenger profiles, processing times, queuing/waiting times and space per passenger. These results suggest that while self-service check-in kiosks can enhance operational efficiency and passenger satisfaction, their effectiveness is contingent upon managing technology reliability and understanding diverse passenger needs. Overall, this study highlights the potential of self-service check-in kiosk in improving airport operations while providing valuable insights for future implementations.