Aircraft trajectory generation is based on diverse sources of information, including flight plans, flight procedures, airspace constraints, weather forecast, aircraft performance data, airlines preferred speeds and the aircraft state. Business Intelligence can help to collect data regarding the average landings per day in each place, average flight duration between any two destinations, average seat capacity utilization by passengers during different times of the day, average delay in take-off or landing and average turnaround time of air crafts. The ability to generate accurate, application-specific aircraft trajectories is essential to Air Traffic Management (ATM). Ground-based Decision Support Tools compute trajectories for tasks such as conflict detection, conflict resolution, scheduling and re-routing. Recent advances in the Centre TRACON Automation System (CTAS) Trajectory Synthesizer (TS) software have allowed flexible and detailed modeling of complex and diverse trajectories. Traffic Management Advisor (TMA) provides air traffic controllers and Traffic Management Coordinators (TMCs) with a time-based metering function, arrival flow visualization and statistics, and runway allocation to increase capacity and reduce delay.