To travel between CDG and Orly, two public transport combinations are available:

RER B + Line 14 (recommended): journey of approximately 70 minutes for €13
RER B + ORLYVAL

Trains run every day from 5:00 AM to midnight. It is recommended to purchase your Ticket Paris Région–Aéroports in advance via the Île-de-France Mobilités app. Navigo passes (zones 1-5, Liberté+) and the Paris Visite card are also accepted at no extra cost.

⚠️ Le Bus Direct service no longer exists since 2020.

From Orly → CDG

Take metro line 14 from Aéroport d’Orly station (near Orly 3, all other terminals are accessible on foot) to Châtelet, then the RER B towards Aéroport Charles de Gaulle.

From CDG → Orly

Take the RER B towards Paris (St-Rémy-lès-Chevreuse or Massy-Palaiseau) to Châtelet-les-Halles, then line 14 to Aéroport d’Orly.

CDG 1 and 3 → Aéroport Charles de Gaulle 1 station
CDG 2 → Aéroport Charles de Gaulle 2 station