how to travel from cdg airport to saint quentin en-yevline
1 answer
RER B from CDG to Paris Saint Michel Notre Dame station, transfer to RER C direction Saint Quentin-en-Yvelines then ride until that train to the terminus. Be careful at Saint Michel Notre Dame as many different RER C trains pass through. Just double check with the overhead information screens on your platform that the train you're taking heads to Saint Quentin-en-Yvelines.