Passenger trains serve the station 17 and a half hours a day; the departure time between trains is roughly 30 minutes during the morning peak with reduced frequency at other times.

The section of the Tōhoku Main Line including this station was transferred to Aoimori Railway on 4 December 2010.

[3] The station is primarily served by trains operating on a local service on the Aoimori Railway Line between Aomori and Hachinohe.

Passenger trains serve Asamushi-Onsen Station for 17 and a half hours each day from 6:01 am to 11:31 pm.

[4] In 2018, a daily average of 683 passengers boarded trains at Asamushi-Onsen Station,[5] an increase from the daily average of 330 passengers the station served in 2010, the final year of its ownership by JR East.