The Oishida to Tendo route is primarily serviced by local JR trains, specifically the JR Ou Main Line. This line generally operates at speeds of approximately 85 km/h (53 mph), making the journey between these two towns around 15 to 20 minutes. Trains typically depart every 30 minutes, providing a steady flow of service for travelers.
The main operator on this route is the local rapid service, which offers basic amenities suited for short-distance travel, including standard seating and bicycle accommodation. This service connects Oishida and Tendo, both of which are known for their scenic landscapes and local attractions. While not as swift as high-speed services in larger cities, the JR Ou Main Line provides a reliable and efficient method for passengers to navigate between these two destinations in Yamagata Prefecture.