A pouring spout for dispensing a liquid present in a liquid container is provided. The pouring spout includes a first tubular body for connecting to the liquid container and a second tubular body which together with the first tubular body forms a passage for dispensing the liquid. The first and second tubular bodies are telescopically movable here relative to each other for leaving clear a radial opening through which the liquid can leave the pouring spout. The pouring spout further includes a venting channel for drawing in air. The invention is characterized in that the venting channel is fixedly connected to the second tubular body.