Recently the number of low cost carriers in the world has been increasing. This increase in low cost carriers has recently become one of the most important issues in the airline industry in korea. The purpose of this study was to examine how service Quality was affected among passengers of South West Airlines and the second purpose of this paper is to suggest the strategic direction for the low cost carriers of Korea to survive in the competitive airline industry. The results of the analyses show that empathy and responsibility affect customer satisfaction. Second, it was found that realiability had significant effects upon customer satisfaction. And the price and safety impacted the passengers` choice of low cost carriers.