In an uninhabited aircraft flight management system 1, there is a three-dimensional map data storage section 172 for storing three-dimensional map data in horizontal and height directions where no ground objects exist and where an uninhabited aircraft 6 is allowed to fly, a current position acquisition section 175 for acquiring a current position, a transport instruction acquisition section 166 for acquiring a destination, a path calculation section 167 for calculating a path, a lidar data acquisition section 121 for acquiring wind condition data, a dangerous wind condition area judgement section 123 for calculating a warning area where flight should be avoided, from the wind condition data, and a path recalculation section 164 for recalculating the path avoiding the warning area when the path calculated by the path calculation section 167 is one which passes through the warning area calculated by section 123.