I have a flight at 7am on a SUnday and would like to take the first train from gare du nord at 4.55am. I am just worried that the RER B ticket machine might not be open at that time? Does anyone knows if it is 24 hours? And I read that you cannot buy a RER ticket in advance...
1 answer
You can buy RER tickets in advance from ticket vending machines or ticket windows and use them at any time in the future, 1 hour, 1 day, 10 years, etc. RER tickets do not expire.