Title:
SYSTEMS AND SMILES: A MEDIATION ANALYSIS OF PROCESS AND ENVIRONMENT QUALITY ON AIRPORT PASSENGER LOYALTY

Authors:
Ema Harifa, Eka Yudhyani and Meiki Permana, Indonesia

Abstract:
This study addresses a critical strategic question in service management: In the competitive airport industry, what truly builds lasting passenger loyalty—flawless operational "Systems" or a welcoming human "Smile"? This research aims to dissect the distinct roles of service process quality ('Systems') and service environment quality ('Smiles') in fostering this loyalty. Moving beyond a simple assessment of direct effects, the study's core purpose is to test the mediating role of customer satisfaction. We seek to uncover the underlying mechanisms of these two crucial dimensions by asking: Is the path to loyalty the same for both? Must an efficient process, like a pleasant environment, first win a passenger's emotional satisfaction to be effective, or can it command loyalty on its own merit? This research employs a quantitative, causal-explanatory design. Data was collected through a structured survey administered to 480 passengers at APT Pranoto Airport in Samarinda. The conceptual model, comprising seven hypotheses, was analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) to assess the path coefficients and determine the significance of the proposed relationships, including the direct and mediating effects. This study reveals a critical asymmetry in how airport passenger loyalty is built, providing a novel distinction between the strategic roles of "Systems" (process quality) and "Smiles" (environment quality). While both factors significantly foster loyalty, the primary finding is that they operate through fundamentally different pathways. The model demonstrated excellent fit (GoF = 0.792). The influence of "Smiles" is entirely indirect; its effect on loyalty is fully mediated by customer satisfaction. This indicates that a pleasant environment and courteous staff must first cultivate passenger satisfaction to earn their loyalty. In contrast, the influence of "Systems" is overwhelmingly direct and dominant. Efficient processes build passenger loyalty directly, bypassing satisfaction as a necessary mediator. This research lies in this empirical dichotomy. It moves beyond a monolithic view of service quality to offer a more nuanced strategic framework for airport management: investments in "Smiles" are crucial for building emotional goodwill, while investments in "Systems" deliver a more immediate and powerful impact on passenger retention.