Airport planners contribute to the design and layouts for aviation facilities. As an airport planner, your duties may include researching and studying the area to decide the best placement for runways, terminals, maintenance buildings, and roads within the airport. You may work for non-commercial airlines and help determine where to build cargo terminals and non-commercial airports. Airport planners are also involved in large-scale projects for airport improvements and expansions, or targeted projects to reduce noise or improve traffic flow.