The exchange of any Standard or Comfort ticket purchased as of June 28, 2022, is free of charge up until one week prior to departure. Your ticket may still be changed after this date for a penalty of €15. 

Standard & Comfort:

• Up until 7 days before departure: Eligible for free exchange (with the exception of any difference in price between the old and the the new ticket).
• Starting from 6 days before departure: Exchangeable for a fee of €15 per ticket (plus any price difference between the old and new ticket) up to the time of departure stated on your ticket.

Premium: Eligible for free exchange (with the exception of any difference in price between the old and the the new ticket) up until one hour after the departure time of your train stated on your ticket.