This data article analyzes the changes in travel habits and destination preferences among Thai domestic travelers before and after the COVID-19 pandemic. The data was collected through an online survey conducted on Facebook, Line, and Instagram, with a sample size of 460 valid respondents. The article provides descriptive statistics and frequency data on travel behavior and attitudes related to various tourist attractions before and after the onset of the pandemic. These insights can be valuable for transportation and tourist destination management in Thailand, as they can be used to compare with other studies using similar methods and outcomes and help to develop specialized and targeted solutions for addressing changes in travel trends and demand after the pandemic. For more information, see the full article titled “Using factor analyses to understand the post-pandemic travel behavior in domestic tourism through a questionnaire survey.”