If you arrive the Charles de Gaulle airport in Paris it shouldn’t be too hard for you to get downtown Paris within 30-40 minutes. The airport terminals are connected to the RER B line, and it will take you to the center within 30 minutes. Depending on what terminal you arrive to there might be that you will have to use some free shuttle buses between the terminals. The general advice is simply to follow the signs to the “RER” or “Paris by train.” This is the cheapest way getting from Charles de Gaulle Airport to Paris.
The RER B stops at the following metro stops:
Gare du Nord, Chatelet-les-Halles, Saint-Michel/Notre Dame, Luxembourg, Port-Royal, Denfert-Rochereau
You can also take the Roissybus departing every 15 minutes from terminal 1, 2 and 3. Arrival after approximately 1 hour to the station Opera. Price is a bit less than 10 Euro.
Arrange your Paris airport transfer beforehand
If you want to have a driver waiting for you as you arrive to Paris and to the Charles de Gaulle Airport, visit the Paris Airport transfer site and book a transfer right away.