On travel-related websites interface metaphors can help travelers plan their trips and make the trip planning process more entertaining and engaging. This study first conceptualizes interface metaphors on travel-related websites by providing a taxonomic analysis based on their functional roles. It then examines the extent to which interface metaphors influence users' perceptions of website usability and their overall experiences when using search engines for planning a trip through an online test. Findings show that interface metaphors significantly affect users' perceptions of system usability and their overall experience with a website. Last, theoretical and managerial implications are discussed.