A flight control method of an unmanned flying object includes acquiring first positional information indicating a position of the unmanned flying object using a position sensor, receiving a position reset command and second positional information that indicates a position of an operation device from the operation device used to operate the unmanned flying object, determining a rotation angle needed to orient a movement direction of the unmanned flying object in a predetermined direction in accordance with the first positional information and the second positional information, and performing control to orient the movement direction of the unmanned flying object in the predetermined direction in accordance with the rotation angle.