Conflans–Fin d'Oise is a railway station serving Conflans-Sainte-Honorine. It is a two-level station situated on the lines from Saint-Lazare to Cergy-le-Haut and from Saint-Lazare to Mantes-la-Jolie via Conflans-Sainte-Honorine. The lower station of Conflans-Fin-d'Oise welcomed nearly 9,500 passengers per day in 2009.