This paper addresses several less-explored dimensions of current scholarship on globalisation, migration and transnationalism: north-south migration streams, the role of second-generation heritage migrants' and the importance of social capital within unequal transnational social fields. We compare two circuits of second-generation migrants, Turk-Germans and Turk-Americans, engaged in intensive transnationalism' having independently moved to reside in their parents' homeland. Istanbul becomes the site of homeland return for these distinct streams of educated heritage migrants. Cross-national comparison of the children of the more stigmatised Turk-German guest workers' with the socially less salient Turk-Americans of middle-class backgrounds offers insight into the way class networks and national capital are distinctly leveraged by adult children with immigrant parents of distinct contexts of homeland exit.