This article is from the Paris, France FAQ, by Thierry E. Toniutti and Delphine Kensit nemo_n@yahoo.com.
The Roissybus runs daily between Charles de Gaulle Airport and Opera
in Paris. It departs from the airport every 15 minutes from 6h to 20h,
and every 20 minutes from 20h to 23h. Departure from Opera starts at
5h45 to 23h, and operates at the same frequency as the trip from the
airport. The 45FRF ticket can be purchased on the bus, and the trip to
the city takes about 45 minutes. From Opera, you can connect to Metro
lines 3, 7, 8, 14.
 
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