The importance of writing publishable articles is a repeated and step-by-step process in order to maintain self-confidence in writing articles. In other words, many students struggle to publish their articles because the rate of successful articles can be affected by the common mistake made. Therefore, this qualitative study aimed to find how undergraduate students’ perceived confidence in writing publishable articles since they may still have difficulties in writing articles. The researcher used thematic data analysis to summarize data points. This study applied a criterion-based sampling as a technique to determine the sample. The total number of the participants was 8 students. This study focused on English Language Education Study Program (ELESP) students in semester 8 at Sanata Dharma University who once joined a conference and published their articles. Data were collected from interviews, Focus Group Discussion (FGD), and document analysis. The findings showed that most of ELESP students faced some challenges in writing articles. The challenges experienced frequently by students were the use of grammar and vocabulary. Nonetheless, the results showed that ELESP students utilized some online tools and benefited feedback from other parties in order to increase their confidence in writing articles.