Based on 20 in-depth interviews with young Spaniards who have migrated to the London region, this article explores the linked processes of migration, adaptation and young-adult life transitions from the perspective of psychosocial well-being. Although most young Spaniards have moved for economic reasons, they also have personal and emotional motivations. The article explores factors that mediated their well-being experiences in the destination setting, such as the role of social networks and the achievement of their aspirations. Aspirations were not only material, in the form of a steady and higher income, but also factors such as language improvement, reuniting with a partner or friend, and being independent from their family.