When the COVID-19 pandemic began to unravel, educational institutions in Thailand returned to teaching onsite or face-toface. Both teachers and students had to once again adjust themselves to teaching and learning in the new normal way. However, some students still require online and hybrid learning. This research aims to study factors affecting students' preferences for the three learning formats, which are 1) 100% onsite, 2) 100% online, and 3) hybrid learning. We collected data from 158 undergraduate students in one university in Thailand. The analysis results indicate that students who prefer 100% onsite learning value interactions with their instructors and friends. This group of students feels they cannot concentrate or understand the content when studying online. On the other hand, students who prefer 100% online learning think that travelling to campus wastes time and money. They feel that they can concentrate well when studying online. Also, they believe in online evaluation systems such as online exams. Lastly, students who prefer hybrid learning like to review the courses by watching class recording videos, especially those on theoretical subjects. Moreover, they feel that the faculty and university are ready for hybrid learning in terms of the equipment, tools, and Internet connections.