Paris - Guide
Getting to/from the airport
The simplest way to get from Charles de Gaulle airport to Paris city centre is to take the RER train (line B) from the terminal to Chatlet les Halles and then change lines according to where you are heading. The journey takes about 40 minutes in total and is fairly cheap (about 10 euros).
Taxis are available at the terminals but be aware that it is not cheap to get to the city centre, expect 50/60 euros depending where you are headed, and traffic can often be very busy which will increase the time of your journey.