Much prior research has focused on understanding how host nationals’ negative opinions of the impact of migration and arriving communities affect their attitudes towards newcomers. Yet, the role of host nationals’ positive opinions has remained largely underinvestigated. The present study aims to move beyond the negative intergroup paradigm and contribute to the literature by examining whether positive opinions of refugees’ impact on the host society are related to host nationals’ positive behavioural intentions towards them. Specifically, the study investigated (1) the mediating role of social proximity in the relationship between positive opinions of refugees’ impact and readiness to assist them and (2) symbolic and realistic threats as potential moderators that might influence this direct/indirect relationship. The results provide initial evidence of the important role of positive opinions of refugees’ impact on the host community in promoting positive behavioural intentions towards newcomers via indirect association with closer social proximity. Moreover, our findings suggest that this relationship might be particularly beneficial for host nationals who perceive immigrants as imposing a realistic threat to their lives and to society as a whole—individuals who tend to be amongst the most prejudice-prone and resistant to change.