Abstract: A system for generating tailored trajectories for aircraft operating in an airspace includes a trajectory generation program. In operation, the system receives real-time data from various aircraft operating in the airspace and stores the real-time data in a medium accessible to the trajectory generation program. The trajectory generation program accesses the real-time data and flight characteristics data associated with a corresponding aircraft to generate a trajectory for the corresponding aircraft that is at least partially tailored to the real-time data and the flight characteristics data.