Abstract: Systems and methods for deconflicting small Unmanned Aircraft Systems (sUAS) within a domain. One example system includes a plurality of UAM/AAM vehicles; and a processor configured to: receive environmental data for a domain, the environmental data determined based on operational weather prediction models or weather observations; process the environmental data through an atmospheric model of the domain to determine mesoscale and microscale weather forecast data for the domain and a positional uncertainty of the sUAS vehicles within the domain; generate a Weighted Graph that describes and spans a plurality of possible sUAS vehicle routes over the domain; determine a route and a corresponding flight schedule for at least one of sUAS vehicles within the domain based on the Weighted Graph; and provide the route and the corresponding flight schedule to the at least one of the sUAS vehicles.