The document outlines a concept of operations for uncrewed urban air mobility (UAM). It describes key stakeholders in UAM including the flying public, regulatory agencies, and UAM industry players. The concept involves enabling infrastructure like vertiports and airspace, as well as UAM aircraft and command and control links. A steppingstone approach is proposed that evolves from current piloted UAM to eventually fully autonomous multi-vehicle operations managed remotely. Key roles and responsibilities are defined for entities involved in UAM operations. The passenger journey and nominal flight operations are illustrated from pre-flight planning through post-flight activities.