Prior to the partial suspension of services by the 2011 earthquake and tsunami, all trains originated from Aoba-dōri Station, with most running to Tagajō or Higashi-Shiogama.
Local trains and rapid service trains that ran the entire length of the line operated at 30-minute intervals.
When the line was fully recovered in 2015, rapid services were switched to the route via the Senseki-Tōhoku Line.
Therefore, under the 2015 timetable, the section between Aoba-dōri and Takagimachi is served only by local trains.

At Sendai Station, the line crosses under the Tōhoku Main Line and its platforms, similar to the situation with the Keiyō Line in Tokyo and the Chikuhi Line in Hakata (which connects via the Fukuoka Airport Subway Line).

The segment from Aoba-dōri to Higashi-Shiogama is a key part of Sendai's transportation system, and becomes very crowded during peak periods, and headways are as short as 4 minutes.
During non-peak times 3–5 trains run per hour.
Between Higashi-Shiogama and Ishinomaki two trains run per hour.

In addition to all-stations "local" trains, there are limited-stop "rapid" and "special rapid" services on the Senseki Line section between Takagimachi and Ishinomaki.
Between Sendai and Takagimachi, the "rapid" and "special rapid" services operate on the Senseki-Tōhoku Line.
The special rapid services make only stop at Yamoto in the Senseki Line section, while the rapid services also stop at Nobiru, Rikuzen-Ono, Rikuzen-Akai, Hebita and Rikuzen-Yamashita.

A "Mangattan Train" operates on the Senseki Line, with a livery featuring Ishinomori Manga characters.
Prior to the partial suspension of services by the 2011 earthquake and tsunami, all trains originated from Aoba-dōri Station, with most running to Tagajō or Higashi-Shiogama. Local trains and rapid service trains that ran the entire length of the line operated at 30-minute intervals. When the line was fully recovered in 2015, rapid services were switched to the route via the Senseki-Tōhoku Line. Therefore, under the 2015 timetable, the section between Aoba-dōri and Takagimachi is served only by local trains.
At Sendai Station, the line crosses under the Tōhoku Main Line and its platforms, similar to the situation with the Keiyō Line in Tokyo and the Chikuhi Line in Hakata (which connects via the Fukuoka Airport Subway Line).
The segment from Aoba-dōri to Higashi-Shiogama is a key part of Sendai's transportation system, and becomes very crowded during peak periods, and headways are as short as 4 minutes. During non-peak times 3–5 trains run per hour. Between Higashi-Shiogama and Ishinomaki two trains run per hour.
In addition to all-stations "local" trains, there are limited-stop "rapid" and "special rapid" services on the Senseki Line section between Takagimachi and Ishinomaki. Between Sendai and Takagimachi, the "rapid" and "special rapid" services operate on the Senseki-Tōhoku Line. The special rapid services make only stop at Yamoto in the Senseki Line section, while the rapid services also stop at Nobiru, Rikuzen-Ono, Rikuzen-Akai, Hebita and Rikuzen-Yamashita.
A "Mangattan Train" operates on the Senseki Line, with a livery featuring Ishinomori Manga characters.
Senseki Line