Keihin-Tōhoku Line
Kannai Station is served by the Negishi Line from to in Kanagawa Prefecture. with through services inter-running to and from the Keihin-Tōhoku Line and also the Yokohama Line. It is 3.0 kilometers from the terminus of the Negishi line at Yokohama, and 62.1 kilometers from the northern terminus of the Keihin-Tōhoku Line at . It is also served by the underground Yokohama Subway Blue Line, and is 19.7 km from the terminus of the Blue Line at .