Airport self-service technology (ASST) have received considerable attention over the last few years as they offer potential savings and efficiency gains for airports and airlines alike; however, little is known about factors affecting to passenger’s behavior intention toward self-service technologies. This study proposes a model to find out what and how much do factors affect to the passenger’s behavior intention toward self-service technologies (SST). In the model, there are five independent constructs: Perceived Ease of Use, Perceived Usefulness, Perceived Enjoyment, Social Influence, Perceived Risk; and one Dependent construct: Behavior Intention. Based on 190 observations from airport users, the study identifies that Perceived Ease of Use, Perceived Usefulness, Social Influence, Perceived Risk have impact on Behavior Intention; amongst them, Social Influence has the greatest effect.