An axial compressor comprising: a tubular casing; a drive shaft extending in axially rotatable manner inside the central cavity of said casing coaxial to the latter; a number of annular blade rows spaced along and stably fixed to the drive shaft; and a number of annular vane rows stably fixed to the peripheral wall of said casing intercalated to the annular blade rows; the compressor being additionally provided with at least one bleed cavity formed within the peripheral wall of said casing, and a corresponding bleeding slot which is formed in the peripheral wall to put said bleed cavity into direct communication with the central cavity of said casing; the compressor additionally comprising at least one air deflector member which is located inside the bleed cavity, and is adapted to divert/guide the airflow (f) of compressed air entering and/or circulating inside the bleed cavity for reducing the air turbulence area inside the bleed cavity; the compressor being characterized in that said at least one air deflector member is located inside the bleed cavity adjacent to said annular bleeding slot, and is designed to guide/divert said airflow (f) towards the air outlet/s of the bleed cavity, so as to reduce the size of the vortices that the airflow (f) forms while flowing out of the bleed cavity via the corresponding air outlet/s; said at least one air deflector member being provided with a circumferentially-arranged flap portion that rises from the inner surface of the bleed cavity to form a ramp or slope for the airflow (f) that has an arched profile so as to smoothly turn the velocity vector of said airflow (f) in direction of the air outlets; said flap portion having, on its front face, a number of protruding fins which are spaced side-by-side to one another in a circumferential direction. the compressor being additionally provided with at least one bleed cavity formed within the peripheral wall of said casing, and a corresponding bleeding slot which is formed in the peripheral wall to put said bleed cavity into direct communication with the central cavity of said casing; the compressor additionally comprising at least one air deflector member which is located inside the bleed cavity, and is adapted to divert/guide the airflow (f) of compressed air entering and/or circulating inside the bleed cavity for reducing the air turbulence area inside the bleed cavity; the compressor being characterized in that said at least one air deflector member is located inside the bleed cavity adjacent to said annular bleeding slot, and is designed to guide/divert said airflow (f) towards the air outlet/s of the bleed cavity, so as to reduce the size of the vortices that the airflow (f) forms while flowing out of the bleed cavity via the corresponding air outlet/s; said at least one air deflector member being provided with a circumferentially-arranged flap portion that rises from the inner surface of the bleed cavity to form a ramp or slope for the airflow (f) that has an arched profile so as to smoothly turn the velocity vector of said airflow (f) in direction of the air outlets; said flap portion having, on its front face, a number of protruding fins which are spaced side-by-side to one another in a circumferential direction.