Presented herein are system and methods for implementing a flight plan initiated beam/null forming antenna. According to an aspect, a terrestrial (i.e., ground) to air communications network can include a beam/null steering antenna that can be configured to operate in conjunction with a spectrum management system to provide one or more communications links between an airborne radio and a ground-based operator. The beam/null steering antenna can also receive the flight plans of aircraft using the system from the spectrum management system. In one or more examples, the beam/null steering antenna can use the flight plan information provided the spectrum management system to determine if a signal received at the antenna is a known desired signal, a known undesired signal, or an unknown undesired signal. In one or more examples the antenna can be configured to direct a beam or null at a particular signal based on the determination.