Abstract: This study intends to examine the effect of leadership types of cabin managers on core self evaluation and job performance. Survey was done from February 10-28, 2017 using cabin crew of airlines in Korea. A total of 270 copies were retrieved. Excluding 52 copies, 218 copies were used in analysis. Frequency analysis of the data was done using SPSS 21.0 and AMOS 22.0. Then, through confirmatory factor analysis, the validity of the model was secured. Research hypotheses were tested through structural equation modeling. The findings of empirical research among variables of this research are as follows. First, it was found that transformational leadership has positive effect on core self-evaluation while transactional leadership does not have effect on core self-evaluation. Accordingly it seems that in the effect on core self-evaluation, transformational leadership is better than transactional leadership. Second, it was found that core self-evaluation has positive effect on job performance. It means that the more confident one is of one’s success and the stronger one has belief that one will succeed if one make efforts with goals, the higher one will achieve job performance. Third, it was found that both transformational and transactional leaderships have positive effects on job performance. It means that the more leaders put importance to morality in decision-making and instill important values and beliefs and emphasize sense of responsibility to his or her subordinates, the higher job performance of those subordinates get. In the extent in which leadership affects job performance, transformational leadership is stronger than transactional leadership.