Bus: the nearest bus stops are Boulevard Saint-Michel, (routes 38 and 82) and Rue Gay Lussac (routes 21 and 27).
By plane Orly: 20 km, 35 min by RER B then Orlyval or direct via Roissybus. Shuttles to Denfert-Rochereau. Roissy/Charles de Gaulle: 25 km, 35 min by RER B Euro Disney: 30 min by RER A
By train: Gare Montparnasse: 10 min by Bus 82 Gare du Nord: 10 min by RER B Gare de Lyon: 15 min by RER A