Online learning is a hot topic that is being discussed. As a lesson that has just been applied – recently the Covid situation has received special attention from various circles. Researcher is interested in conducting research on the experiences of EFL students during online learning. It becomes important to know the background of students starting from how they feel learning online so that they have experience. The main purpose of this study was to determine the online learning experience of EFL students in terms of Mihaly's flow theory. This is indicated by the natural dimensions of Mihaly's flow theory experienced by students, meaning they are in a state of flow. This research is included in the classroom follow-up research, including the subjects of this study are 11th grade students, there is one main class that is the focus of the research. With the criteria of the sampling technique, of the 15 students who were interviewed, there were 4 students who met the research criteria. This research was conducted by interviewing selected participants by conducting in-depth interviews. After conducting interviews, the researcher made field notes based on the raw data, then applied several data collection processes. Field texts (commonly called data) were created by participants and researchers to present aspects of the experience. Field texts are shaped by the selective interests of researchers and/or participants. Therefore, composing field texts is an interpretive and contextual textual process. Method this research is a narrative inquiry research. Researcher used thematic analysis to process the data. The results of this study can be a lesson for students that learning experiences need to be built to get maximum results. Mihaly's flow theory that occurred in the four participants led to student achievement, so that other students could learn from someone's experience to imitate the habits of the four selected students at SMK N 1 Tanon.