This paper investigates the critical success factors for the use of Virtual Reality (VR) in aircraft training. The research was conducted through pairwise comparison of various factors by five domain experts, including a professor specializing in VR, two managers from VR companies, and two assistant professors of aeromechanical engineering. The research results showed that realism and fidelity of the simulation were the most important factors, followed by interactivity and usability, and training effectiveness and efficiency. Training transfer and usability and technical performance were also identified as important considerations, although less important than the other factors. The research findings have significant implications for the aviation industry as the use of VR in aircraft training continues to grow. The critical success factors identified in this research can help guide the development of VR training programs for aircraft operators and maintenance personnel. In addition, the research provides a framework for evaluating the effectiveness of VR training programs, which can assist in assessing their return on investment. The results of this research may also have broader applications beyond aircraft training. The critical success factors identified can serve as a guide for developing effective VR training programs in various industries, including healthcare, construction, and manufacturing. The research underscores the importance of prioritizing simulation realism and fidelity, interactivity, usability, and training effectiveness and efficiency when developing VR training programs to ensure their success.