I will travel from CGD airport to Champigny or Joinville-le-Pont station and will take RER B and then RER A .
- Do I need buy another ticket if I transfer from RER B to RER A ?
- Can I buy a day pass for this trip?
- what is the best ticket to buy if I will be in Paris for 2 days and wish to go Versailles ? please give suggestions Thanks! Jean
A single RER ticket, customized by a ticket agent at CDG Airport train station ticket office, will let you transfer from RER B to RER A all the way to Joinville le Pont.
You can use a 1-5 zone Navigo Jour day pass or 1-5 zone Ticket Mobilis for this trip.
If you make a round trip Paris-Versailles only once, and the rest of the time in Paris, then use regular RER tickets for the trip to Versailles and two 1-2 zone Ticket Mobilis or Navigo Jour day passes for your time in Paris.
Keep in mind there is construction along RER A that is affecting evening & weekend train service until September 1, 2019.