[Problem] To provide a flying body having a new structure capable of improving flight efficiency. [Solution] The problem is addressed by a flying body capable of traveling along at least a first direction and comprising a fuselage part and an auxiliary part wherein the fuselage part has a body part and a lift generating part, the body part having a right part and a left part extending along the first direction and a connecting part whereby the ends of the right part and the left part in a second direction opposing the first direction are connected. The flying body is thus configured so as to create a surrounded space surrounded by the left part, the right part, and the connecting part when seen from a third direction perpendicular to the first direction.