The findings of this study are based on the analysis of a sample of 226 respondents Most of passengers are in thc agc nf bctwcen 21 30 years old an female still more than male. Almost, the passengers are travels by airline 3-5 times per year and income level approximately 20,001 50,000 Baht. Their occupation is Self-employed than others career and most of them decides to choose Thai Air Asia to fly. There is a significant Association between educations and overall I am satisfied with Air Asia. There is a significant Association between salaries and overall l am satisfied with Nok Air There is a significant difference between Education and Changing names of Air Asia(Change the name at any time without charge). There is a significant difference between Income levels and changing name of Air Asia(Change the namc at any timc withont charge). There is a significant differencc between Education and Snack and Beverage of Nok Air(Aunty Arun bread and water). There is a significant difference between Occupations and selecting seats of Nok Air(Can select seats immediately when booking is complete)