Resumen: During the COVID-19 pandemic over the academic year 2020–2021, many universities and faculties had to deal with hybrid teaching by combining face-to-face and virtual teaching approaches. The main objective herein considered was to analyze the perceptions of students and teachers from Spanish universities regarding how e-learning has actually been adopted before, during, and after the COVID-19 lockdown. We also wished to know their opinions about the usefulness and applicability of the e-learning and hybrid teaching methodologies regarding their impacts on the teaching–learning process in the university context. A thematic analysis was performed using three discussion groups (two made up of four teachers each, and another comprising five teachers with university management posts). Seventy-nine open questionnaires completed by students were also analyzed. The participants were from eight different Spanish universities: six public and two private. The obtained results revealed a preference for face-to-face teaching over virtual teaching, and the advantages offered by closer interpersonal relationships were stressed. However, the participants also indicated the potential of the e-learning and hybrid teaching methodologies, which they believed complemented one another and reinforced learning personalization. Thus, a specific need for training in the e-learning methodology and hybrid teaching format was apparent. Idioma: Inglés DOI: 10.3390/su141912003 Año: 2022 Publicado en: Sustainability (Switzerland) 14, 19 (2022), 12003 [19 pp.] ISSN: 2071-1050 Factor impacto JCR: 3.9 (2022) Categ. JCR: ENVIRONMENTAL STUDIES rank: 48 / 128 = 0.375 (2022) - Q2 - T2 Categ. JCR: ENVIRONMENTAL SCIENCES rank: 114 / 275 = 0.415 (2022) - Q2 - T2 Categ. JCR: GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY rank: 5 / 9 = 0.556 (2022) - Q3 - T2 Categ. JCR: GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY rank: 34 / 46 = 0.739 (2022) - Q3 - T3 Factor impacto CITESCORE: 5.8 - Engineering (Q1) - Energy (Q2) - Social Sciences (Q1) - Environmental Science (Q1)