Getting between Charles de Gaulle (CDG) and Orly (ORY) airports in Paris is a common necessity for connecting passengers, and there are three main ways to do it. The fastest but most expensive option is a taxi or ride-share (Uber/Bolt), which takes 45 to 80 minutes depending on the notorious Paris traffic and costs roughly €70 to €90. The most reliable public transit option is the RER B train; you take the RER B from CDG to Antony station, then transfer to the OrlyVal light rail which takes you directly to the Orly terminals. This total journey takes about 75 to 90 minutes. While the "Le Bus Direct" shuttle service was a popular direct option in the past, its availability has fluctuated, so travelers in 2026 should verify current shuttle schedules before arriving. If you are on a tight connection, you should allow at least three to four hours between flights to account for luggage retrieval, immigration, transit time, and re-clearing security at the second airport.