Introduction: This study explores the application of the flipped classroom approach in teaching professional English to Civil Engineering students at the Technical University of Košice. This pedagogical shift aims to improve language proficiency, engagement, and critical thinking. Methods: A flipped classroom approach was implemented over one semester with two student groups. Instructional materials, including videos and quizzes, were provided prior to class via the Moodle platform. In-class time was dedicated to practical language use, discussions, and case studies. Results: A post-semester survey involving 40 students indicated increased satisfaction, improved English skills, and greater engagement. 75% found pre-class materials helpful, and 60% reported improved language proficiency. Discussion: The flipped classroom approach allowed for deeper in-class interaction and skill development. Students gained exposure to real-life communication scenarios in the field of civil engineering. Limitations: Challenges included students' time management, motivation, and occasional technical difficulties. However, a portion of students preferred traditional methods. Conclusions: With effective planning and support, the flipped classroom approach enhances student engagement and language acquisition in professional English education.