This study adopted technology readiness, service convenience, and corporate credibility to investigate the behavioural model of low cost carrier (LCC) travellers regarding mobile APPs that are based on online air ticket reservation systems. Subsequently, this study investigated whether the corporate reputation of LCC parent companies moderated the relationship between LCC corporate credibility and the intention to use their mobile APPs. At first, the service convenience items of LCCs’ mobile APPs were conducted by the opinions of experts on that were related to LCCs. Consequently, questionnaire interviews were conducted, and 422 valid questionnaires were recruited from among all travellers who had flown on AirAsia X. The research results revealed that mobile device technology readiness exerted significant positive effects on service convenience and corporate credibility. In addition, the corporate reputation of parent companies exhibited moderating effects on the intention to use these APPs. Finally, research suggestions and management implications were proposed.