Social media are acknowledged as an important information source that influences tourists’ travel choices. However, qualitative studies that take an inductive approach to identify the roles of social media by investigating how social media affect travel choices are limited. By interviewing 21 tourists who had recently taken trips, this article aimed to identify the roles that social media played in the tourists’ choices of six travel components (destination, transportation, accommodation, food and dining activities, attractions, as well as shopping and leisure activities). Four roles have been identified: Need Generator, Supporter, Guider and Approver. Theoretical and practical implications along with future research suggestions are discussed.