Nippō line is also used by:
- Hitahikosan line trains between Kokura and Jōno
- Nichinan line and Miyasaki-kūkō line trains between Miyasaki - Minami-Miyasaki

Local trains (Futsū 普通)

Kokura - Nakatsu
There are 66 local trains/day from Kokura. Some of the trains originate in Mojikō or Shimonoseki. The main destinations are Yukuhashi and Nakatsu. Some trains terminate in Kanda, Shindenbaru or beyond Nakatsu in Yanagigaura, Usa and Ōita.

Nakatsu - Ōita
There are 43 local trains/day to Ōita from the north. They originate in Shinmonoseki, Nakatsu, Yanagigaura, Nakayamaga, Kitsuki, Ōga, Hiji and Kamegawa. Some of the trains continue south of Ōita. In addition to the trains going in to Ōita, there are also 5 local trains running Nakatsu - Usa only.

Ōita - Saiki
There are 42 local trains/day from Ōita to the north. Some of them originate north of Ōita. The trains terminate in Ōzai, Kōsaki, Usuki and Saiki.

Saiki - Nobeoka
There are only 3 local trains/day Saiki - Nobeoka, of which two continue to Minami-Nobeoka, and 1 train Ichitana - Minami-Nobeoka.

Nobeoka -Miyazaki
16 local trains/day from Nobeoka, 3 trains from Takanabe and 7 from Sadowara to Miyazaki. Most trains continue to Minami-Miyazaki / Miyazaki-kūkō (airport). Some trains terminate further south on either Nippō line or Nichinan line.

Miyazaki - Miyakonojō - Nishi-Miyakonojō
There are 22 local trains/day from Miyazaki. Most trains terminate in Nishi-Miyakonojō, but some trains terminate in Tano and Miyakonojō or beyond Nishi-Miyakonojō. Two trains continue from Miyakonojō to Kitto line.

Miyakonojō - Kagoshima-chūō
There are 34 local trains/day terminating in Kagoshima-chūō (or beyond on Kagoshima line). Most of them originate in either Miyakonojō (or beyond) [9 trains] or in Kokubu [19 trains]. Two trains are through from Hisatsu line at Hayato and four trains starts in Kagoshima.