If you need to get from Charles de Gaulle to Orly Airport, you have several options. Below are three ways to get between airports in Paris:
Trains from Charles de Gaulle to Orly
Trains from CDG to Orly are called RER B trains. They are local suburban trains that go through the Paris city center. The journey involves a tram ride at the end that takes passengers from the Orly RER stop (called Antony) to the airport.
Buses from Charles de Gaulle to Orly
Buses from Charles de Gaulle to Orly Airport are operated by Air France. Their coaches are called Les Cars Air France, and they comfortable and offer ample luggage storage space in the hold.
Taxis from Charles de Gaulle to Orly
Taxis are an expensive way to get between airports in Paris, but they are fast and convenient if you have a lot of luggage and if there is no traffic en route.
Whichever way you choose, make sure to leave yourself plenty of time to make your connection.
Additionally, keep in mind that transport strikes are common in Paris, so make sure to check beforehand to make sure that your preferred method of transportation is operating on the day you need to get from Charles de Gaulle to Orly Airport.