The entrance fee for Postojna Cave varies depending on age and ticket type. As of the latest available information, the prices are as follows:
- Adults: €32.90
- Students (16-25 years): €26.30
- Children (6-15 years): €19.70
- Children under 5 years: €1.00
Audio guides are available for an additional fee of €3.90[1]. Tickets can be purchased online and also at the park ticket office. Combination tickets that include entrance to other attractions, such as Predjama Castle and the Vivarium, are also available for a discounted package price[3]. Parking carries an extra cost of €5 for 24 hours[7].