Transactions through mobile commerce for tourism-related products and services are increasing. This phenomenon can lead to impulse buying due to technological features and personal inclinations. However, few studies have shed light on the phenomenon empirically. The purpose of this study is to investigate what motivates buyers to purchase tourism products through mobile commerce and how these motives impact consumers’ impulse buying behavior. First, we interviewed participants to study their motivation for mobile commerce application use. Then, we extracted the motivation factors and examined how these factors affect impulse purchase intentions for tourism products through mobile commerce applications. To do this, we administered a questionnaire survey. In addition, fuzzy-set qualitative comparative analysis (fsQCA) provided in-depth analysis of factors that can influence impulse buying. Results show that convenience and ubiquity have an effect on perceived value. Furthermore, perceived value, notice of special promotion, and impulsiveness have a direct effect on impulse buying behavior. According to the results of the fsQCA, not only impulsiveness but also other factors can serve as antecedents to impulse buying behavior.