In this survey we will randomly giving questionnaire in different places of Khon Kaen to respondents whom had use Nok Air services. This questionnaire it have five sections. It is asking about the satisfaction of Nok Air passenger in Khon Kaen. In the questionnaire it have five satisfaction levels to represent customer satisfaction levels ranking from highly satisfied to highly dissatisfied. highly satisfied, satisfied, moderate, dissatisfied and highly dissatisfied .