This study was conducted in the background of opportunity factors of low cost carriers’ external environment. This study was conducted for participants who had experience using low cost carriers. We conducted a case study using focused interview method for customer attitude. The purpose of this study is to identify the perception and service level of low cost carrier. We will classify customer attitudes and draw implications for low-cost carrier marketing. Customer attitudes were conducted by intensive interview method. The question format was conducted in an open, conversational format. There were 18 participants. As a result, participants' attitudes toward low-cost carriers were classified as responses to safety, service, and price factors. Participants' attitudes are as follows: Safety attitude appeared to be anxiety or avoidance. Service attitude showed gratitude and gratitude. I simply purchased the airfare because it was cheap. The implications of the case study are as follows: Low-cost carriers should give an image of safety. We should strive to improve service minds rather than in-flight entertainment. Strengthen safety culture for employees.