May I buy a ticket at the CDG to the Auber station, do RER A and B have the same tickets?
1 answer
RER tickets that you buy at CDG train stations to get to Paris (Auber station is inside Paris transport city zone 1) are valid for travel on the RER B and your transfer onto RER A to get to Auber station. The RER ticket you'll buy at CDG Airport is good for any transfers on the RER or Metro system inside Paris zone 1.