I want to travel from airport Charles de Gaulles by RER. How much will it cost? By | May 14, 2017 | in Vote Up 0 Vote Down Answered Public Public Private Questions Anonymous asked May 14, 2017 I want to travel from airport Charles de Gaulles to Versailles by RER on the 20th of may. How much will it cost? Sincerely yours Bo Aronsson 1 answer Vote Up 0 Vote Down Public Ben ⋅ Staff ⋅ May 16, 2017 A RER ticket from CDG airport to Versailles Rive Gauche should be roughly 14.50€ #1 Please login or Register to Submit Answer Username or Email Address Password Remember Me