  Expected to operate in the imminent future, air taxi service (ATS) is an
aerial on-demand transport for a single passenger or a small group of riders,
which seeks to transform the method of everyday commute. This uncharted
territory in the emerging transportation world is anticipated to enable
consumers bypass traffic congestion in urban road networks. By adopting an
electric vertical takeoff and landing concept (eVTOL), air taxis could be
operational from skyports retrofitted on building rooftops, thus gaining
advantage from an implementation standpoint. Motivated by the potential impact
of ATS, this study provides a review of air taxi systems and associated
operations. We first discuss the current developments in the ATS (demand
prediction, air taxi network design, and vehicle configuration). Next, we
anticipate potential future challenges of ATS from an operations management
perspective, and review the existing literature that could be leveraged to
tackle these problems (ride-matching, pricing strategies, vehicle maintenance
scheduling, and pilot training and recruitment). Finally, we detail future
research opportunities in the air taxi domain.
