This article explores the perspectives of Afghan unaccompanied refugee minors on their own motives and aspirations and on the motives and aspirations of their family and community context at the moment they left their home country and at arrival in the host country. Interviews and questionnaires were used to measure the aspirations of 52 Afghan unaccompanied refugee minors, soon after their arrival in Belgium. Aspirations at departure and evolutions in aspirations over time were examined retrospectively. Finding security and studying particularly influenced their decision to migrate. These aspirations changed over time under the impact of a diversity of factors, such as their own experiences and the opinions of others (e.g. peers, smugglers). Since motives and aspirations might influence the migration trajectories of unaccompanied refugee minors, migration policies and practitioners should take them actively into account so as to improve support for unaccompanied refugee minors.