The article analyzes technologies for teachers’ professional development to work online in education for sustainable development. The authors emphasize that education for sustainable development (ESD) promotes developing the knowledge, skills, understanding, values and actions required to create a sustainable world, which ensures environmental protection and conservation, promotes social equity and encourages economic sustainability. ESD must engage a wide range of stakeholders from government, private sector, civil society, non-governmental organizations and the general public. The authors note that educational institutions should provide teachers with opportunities to improve their qualifications according to the extraordinary time and the need to have many processes online. The differences between traditional and distance learning systems are revealed. The authors suggest a structure of competencies (technical, professional and methodological) for a distance learning teacher. A promising model of distance learning technologies for teachers’ training is presented in the article.