Our article addresses two aspects of young migrants’ understandings of integration: their own ideas of what integration is, and their perception of the destination society’s concepts and expectations regarding their integration. We analyze qualitative interviews which were conducted in the Horizon 2020 project MIMY, in Germany, Luxembourg and Norway, using the grounded theory methodology. Our exploration shows that the young migrants’ awareness of the existing ideas of integration surrounding them creates a complex reflective interaction between their own ideas and the (perceived) expectations from society. We identified aspects of consonance, where young migrants’ ideas coincide with the expectations they perceive. More importantly, however, our research has discovered that the youth experience tensions and dissonance between their own ideas of what integration should be and the concepts and expectations regarding integration they feel confronted with by society. Our analysis revealed that while young migrants’ understandings of integration are very close to state-of-the-art scientific conceptualizations of integration, this view is not matched by the meaning of integration they perceive around them.