The return of rejected asylum seekers has a high priority on the national agendas of European States. In order to make well-informed asylum decisions involving children, knowledge of how asylum-seeker children fare after their return to their countries of origin is needed. This study aims to gain knowledge about the child-rearing environment and the social-emotional wellbeing of migrant children who have returned to Kosovo and Albania after a stay in a European host country. Based on a sample of 106 returned families, the study investigated the predictive factors for children’s social-emotional wellbeing after return using regression analyses. The findings show that procedural characteristics and ethnicity predict wellbeing, mediated through the quality of the child-rearing environment. The most vulnerable children did not have a stable resident status in the host country, belonged to a minority ethnic group and were older adolescents. The findings indicate that the wellbeing of returned children is not only dependent on conditions after repatriation, but also on the conditions which the families left in the host country. To enable sustainable return in a child’s best interests, the needs of vulnerable families and children should be thoroughly assessed prior to their return, and reintegration support should be tailored to their situation.