This article focuses on the potential benefits of migration. Using the author's previous research on remittances and return migration, some of the welfare gains that can stem from the migratory process are highlighted. In the first part of the article, the impact of remittances on child well-being in Vietnam is investigated. Both the incidence of child labour and school attendance rates in remittance recipient households are assessed. In the second part of the article, the contribution made by Tunisian return migrants to the development of their country of origin is examined. Both analyses suggest that, if certain conditions are met, migration can produce beneficial outcomes for the people and the countries involved in the process.