ZSSK Website
FIP 50 Tickets
In the purchase process, the discount “FIP Ticket 50%” can be selected.
Reservations
In the connection search, you can select “I have the ticket already I want to purchase only reservation or additional service” on the English website. Then choose “Reservation” and select “International ticket/Rail Pass” as the discount in the passenger selection, ensuring “Entitled for 100% discount” is selected.