This study aimed to identify study habits during the online learning and face to face learning, the dominant learning styles of the students, find out whether there are differences of study habits in online learning and face-to-face learning, the association between learning styles and study habits, and the constraints of EFL students to have good study habits in online learning. The design of the study was embedded mix method research design. The sample of the study was 205 students in Hotel Department in SMKN 4 Denpasar who were chosen randomly. The data were collected by using close-ended and open-ended questionnaires. The result of the study showed that there were differences between study habits in online learning and face-to-face learning. In online learning, students had moderate study habits, while in face-to-face learning they had good study habits. The dominant learning styles were kinaesthetic and there were low associations between learning styles and study habits. The were some constraints to have good study habits from parents, teacher, students and school.