Abstract: Routes for performing missions such as deliveries by air within a region may be selected based on historic exposures to noise within the region. Where a plurality of missions are performed by aerial vehicles at or near locations within a region, noises radiated by such aerial vehicles during such missions may be tracked or determined, and the extent to which ground-based locations are exposed to such noises may be modeled accordingly. Subsequently, when another mission is to be performed by air within the region, aspects of an optimal route to be traveled by an aerial vehicle while performing the mission, including but not limited to courses, speeds, altitudes, orientations or operational characteristics of the aerial vehicle, as well as paths to be traveled by the aerial vehicle or waypoints to be reached, may be selected in a manner that takes into account historical exposures to noises within the region.