Higher education institutions are increasingly arranging international programmes to allow trainee teachers to spend periods abroad. In this way, teachers can compare diverse school systems and have the opportunity to reflect on their own teaching identity. This article focuses on trainee teachers' ideas and opinions that emerged during international mobility, underscoring their reflections on personal and professional aspects involved in their participation in internships at schools abroad. To investigate these reflections, the Department of Education at the University of Genoa designed a scoping study administering a questionnaire to 35 Italian trainee teachers who had an international teaching experience. The questionnaire was composed of closed- and open-ended questions to collect both quantitative and qualitative data. The findings emphasise that international experiences gave trainee teachers many opportunities to reflect deeply on several aspects of their personal and professional identities mainly related to their linguistic skills, teaching competencies and self-reflection attitudes.