In recent years, it has been well established that study abroad participation is a socially selective process. Today, scholars generally focus on single social markers, often using cross-sectional data. In this article, we instead adopt an intersectional and longitudinal approach to improve our understanding of the development of social selectivity in study abroad, with a particular focus on the intersection between socioeconomic background and gender. Our analyses are based on the Learning Conditions and Student Orientations (N = 49,931), a representative survey of German higher education students, and covers the period 1994 to 2016. Our analyses indicate that social selectivity in German study abroad programs increased in 2003 and remained stable afterward, which can be partly explained by differences in cultural, economic, and social capital. Finally, our analysis suggests that cultural capital also explains the gender imbalance in study abroad programmes.