This study aims to determine the level of ESP students' satisfaction with online ESP learning courses at three faculties of Taras Shevchenko National University of Kyiv. The current study examines students' answers to identify their satisfaction in ESP online courses. The study's research questions were divided into four categories: the effectiveness of online ESP learning, the availability of learning material used by ESP instructors, the evaluation of ESP teachers' results, the effectiveness of online testing, and students' difficulties with ESP distance learning. A descriptive statistical method was used to validate the study. The statistics package JASP was used for data analysis. The authors chose observation, literature analysis, a questionnaire provision, and descriptive data analysis as the research tools. The study results show that students are primarily pleased with ESP courses taught online, students fulfil the expected progress in ESP learning performance. It is revealed that the main problems that influence and impact online ESP learning during COVID-19 are related to technical, academic, and communication challenges. Student satisfaction surveys may lead to changes in ESP online learning activities that may, in turn, boost students' outcomes. The results provide valuable insight into students' satisfaction with online learning and pose practical questions for its implementation. As a result, this study is just a preliminary attempt at offering considerate analysis to Ukraine's policymakers.