Abstract: A method, apparatus, system, and computer program product for managing flight leg data for flight legs flown by a plurality of aircraft. A computer system receives the flight leg data for the flight legs flown by the plurality of aircraft in real-time. The computer system associates aircraft operation data and airport data with the flight leg data such that the aircraft operation data and airport data associated with the flight leg data forms flight activity data for the flight legs. The computer system displays a selected view of the flight activity data in real-time in a graphical user interface on a display system in response to a query for the flight activity data using the selected view.