This study aimed to examine the factors influencing tourist behavior in Ban Khiriwong, Lan Saka District, Nakhon Si Thammarat Province, following the COVID-19 pandemic. Specifically, it investigated the relationship between personal factors, attitudes towards COVID-19, and tourism push factors with tourist behavior. Data were collected from 400 Thai tourists using a structured questionnaire and analyzed using SPSS for frequency, percentage, mean, standard deviation, and Chi-Square tests at a significance level of 0.05. The findings revealed that most respondents were female, aged 30–40 years, married, employed as government officers or state enterprise employees, with an average monthly income of 15,000–30,000 THB, and had received two doses of the COVID-19 vaccine. The primary travel motivation was to gain new experiences, with personal vehicles being the preferred mode of transportation. Popular activities included visiting the community learning center in Ban Khiriwong, with day trips being the most common travel duration. Tourists typically spent less than 2,000 THB per visit and expressed an intention to revisit due to satisfaction with the services provided by local entrepreneurs. Hypothesis testing revealed that personal factors such as gender, age, occupation, income, and vaccination status significantly influenced various aspects of tourist behavior, including travel purpose, preferred activities, travel duration, expenditure, and intention to revisit, while marital status had no significant impact. Attitudes towards COVID-19 were significantly related to behavior, particularly in terms of social distancing, choosing destinations with preventive measures, and using technology for booking and payments. Furthermore, tourism push factors, including COVID-19 preventive measures, standardized facilities (SHA-certified), economic considerations, and social media, were significantly associated with travel purpose, planning, duration, expenditure, and intention to revisit. These findings provide insights for stakeholders to enhance tourism management and strategies in the post-pandemic era.