A good choice for getting from Opera to CDG and vice versa. Much better than taking The RER. You can purchase tickets at the ticket machine if you are paying by credit card or cash to the driver. It is a direct route to CDG airport from there. Just get off at your terminal. It is public transit so load your own luggage. Located right in the backside of the famed Opera building. Just look for the American Express sign above it. This bus goes thru the city and gets affected by Paris city traffic. But it is probably better than taking the RER, which goes thru some bad parts of town and can make you feel unsafe at times. Pleasant and easy to use. Highly recommend if you plan to use public transit to get to CDG. read more