| Railway | Line | Linetype |
| JR East | Yonesaka | JR railway |
| Yamagata | Flower (Furawa) Nagai | Non JR railway |
| Opened | 1926-1936 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Yonezawa | JR East: Ōu Hon [Yamagata] (Fukushima - Shinjō ), JR East: Yamagata Shinkansen | 0.0 | Yonezawa-shi | Yamagata |
| Map | Map | Imaizumi | Yamagata: Flower (Furawa) Nagai | 23.0 | Nagai-shi | |
| Map | Map | Uzen-Tsubaki | | 30.1 | Iide-machi | |
| Map | Map | Oguni | | 58.3 | Oguni-machi | |
| Map | Map | Sakamachi | JR East: Uetsu Hon | 90.7 | Murakami-shi | Niigata |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Rapid Kaisoku 快速 | Benibana べにばな | Yonezawa - Sakamachi - Niigata | 1 | 2h54 | 48 km/h |
| Local Futsū 普通 | Yonezawa - Sakamachi | 4 | 1h54 | 48 km/h | |
| Yonezawa - Uzen-Tsubaki | 3 | 39 min | 46 km/h | ||
| Yonezawa - Imaizumi | 1 | 33 min | 42 km/h | ||
| Oguni - Sakamachi | 1 | 37 min | 53 km/h |
| Opened | 1913-1923 | Tracks | Single track | |
| Owner change | 1988 | From JR to Yamagata Railway |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Akayu | JR East: Ōu Hon [Yamagata] (Fukushima - Shinjō ), JR East: Yamagata Shinkansen | 0.0 | Nanyō-shi | Yamagata |
| Map | Map | Imaizumi | JR East: Yonesaka | 12.2 | Nagai-shi | |
| Map | Map | Nagai | | 18.3 | Nagai-shi | |
| Map | Map | Arato | | 30.5 | Shirataka-machi |
| Type | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|
| Local Futsū 普通 | Akayu - Arato | 12 | 53 min | 35 km/h |
