Dětmarovice is situated on the main railway line from Prague/Vienna to Warsaw. Another important line to Český Těšín–Žilina–Košice splits here from the line to Warsaw.
Dětmarovice plays a vital role as a railway hub along the primary route connecting Prague and Vienna to Warsaw, also serving as a key point for a separate rail line extending to Český Těšín–Žilina–Košice.