The first section of the line opened in 1898 in a part between Kashiwara Station and Furuichi Station by Kayō Railway Co., Ltd.. The next year Kanan Railway Co., Ltd. took over the line, then the company renamed itself Osaka Railway Co., Ltd.. The railway constructed its own access line to Osaka center, completed in 1923 and electrified at 1,500 V DC, then the highest voltage in Japan. Later extension to Nara Prefecture, present Kashiharajingū-mae was built in 1929 and through operation began to Yoshino Railway Co., Ltd., now Yoshino Line. The entire route was competing with the present Osaka Line, but Osaka Railway was merged to the then Kansai Kyūkō Electric Railway Co., Ltd., predecessor of Kintetsu, in 1943.
Operations
Some trains go through to the Nagano Line or the Yoshino Line, some operate between Furuichi and Gose Station on the Gose Line, and some from Gose run through to Osaka Abenobashi. Local trains run between Osaka Abenobashi and Fujiidera or Furuichi, and between Furuichi and Kashiharajingū-mae.
Rapid service
Local train Running all day, but the operation is divided at Furuichi station except in the early morning and late night. Osaka-Abenobashi-Furuichi Osaka Abenobashi - Fujiidera or Furuichi is the basic operating pattern, with four trains per hour between Osaka-Abenobashi and Fujiidera during the day, along with two additional trains between Osaka Abenobashi and Furuichi. A few trains run from Kawachi-Amami to Osaka Abenobashi in the early morning and back to Kawachi-Amami station late at night. Local trains are overtaken by Semi express trains at Imagawa, and by Limited Express or express trains at Kawachi Amami. Furuichi-Kashiharajingu-Mae or Yoshino Normal operation is between Furuichi and Kashihara Jingu-mae. Some trains continue to Yoshino on the Yoshino Line in early morning and late nights. In this section semi-express trains make all stops, but few trains operate here as most run on the Nagano Line after Furuichi. Local and semi-express trains to Osaka Abenobashi twice per hour alternate to provide constant daytime service. There is a direct connection from the Gose Line at Shakudo, and some trains run between Shakudo and Kashihara Jingu-mae only on weekday mornings. ;Semi-Express Semi-express trains operate between Osaka Abenobashi - Kashihara Jingu-mae or Kawachinagano. Two trains per hour run to Kashihara Jingu-mae and four to Kawachinagano. During morning rush hours, some trains operate from Gose to Osaka Abenobashi. A few trains also continue from Kashihara Jingu-mae to Yoshino as well. ;Suburban Express One train on weekday mornings from Kashihara Jingu-Mae to Osaka Abenobashi and two trains on weekday evenings and one on weekend evenings in the reverse direction. ;Express Two trains per hour from Osaka Abenobashi, through to Yoshino on the Yoshino line. Unlike other trains on this line, they are not overtaken by limited express trains at intermediate stations.
;Rapid Express Rapid express trains are operated in spring, and the stops on the Minami Osaka Line are the same as for express trains. It waits for up to 12 minutes at Kashihara Jingu-mae Station where it is overtaken by limited express trains, taking longer than normal express trains. ;Limited Express Limited express trains operate between Osaka Abenobashi and Kashihara Jingu-mae or Yoshino, one to two trains per hour on weekdays and two per hour on weekends. Some trains are operated by dedicated Sakura Liner rolling stock. To board limited express trains, a limited express ticket is needed in addition to a regular ticket. Limited Express Blue Symphony. Stations are the same as regular limited express trains. Limited Express. To board the Limited Express Blue Symphony, a limited express ticket and special car ticket are needed in addition to a regular ticket.
