The JR Suburban Train Series 221 comprising either four or six cars is used mainly for the 'Miyakoji Rapid Service' and the 'Rapid Service,' while the one comprising four cars mainly enters the Nara Line.
主に「みやこ路快速」「快速列車」で4両編成や6両編成で運用されるが、奈良線には主に4両編成が入線する。