Global Cities and Air Transport MobilityOne of the preeminent challenges in developing a meaningful framework for differentiating world cities is the ability to capture inter-city flows of information, goods, capital and people. In this context, no single metric should take precedence; rather, the ability to capture varying levels of interactions between cities can provide layers of empirical perspective and is a noted strength of the world city framework. One increasingly important component of the world city interaction matrix is the global, commercial airline network and its associated air passenger flows. This project examines the role of global airline networks and their relationships to world cities. Elements of deregulation, airline network topology, city connectivity, accessibility and hierarchy formation are explored.