Abstract: “This research aimed to: (1) study the travel behavior of Don Mueang Airport service users (2) investigate the types of travelling expenses and (3) examine the relationships between purposes of travel and modes of travel. The population and the sample included 400 Don Mueang Airport service users. The research instrument was a questionnaire. The statistics included frequency, percentage and Pearson Chi-Square. The research findings are as follows. (1) The travelers had travel frequency of not more than 5 times a year were at 64.7 percent, traveled to Don Mueang Airport by taxis were at 55.3 percent, travelers traveled 1- 2 persons were at 57.4 and travelers arrived at Don Mueang Airport 2-3 hours before flight time was at the rate of 68.1 percent. The purposes of travel were for vacation and for work, representing 42.3 percent and 28.1 percent respectively. (2) The top three expenses traveler spent on were for food and beverage, for accommodation and for travelling, representing 25.3 pe”

Keywords: Travel behavior, cost of travel, low-cost airlines