Postojna Cave Underground Tours at a glance
- Our pick: Postojna Cave & Predjama Castle Tour from Ljubljana: Skip the Line, € 114 per person (6h, 4.81★ · 1,192).
- Top rated: Postojna Cave and Predjama Castle tour from Ljubljana, € 70 per person (5h 30m, 4.96★ · 67).
- Shortest: Postojna Cave & Predjama Castle Tour: Electric Train Ride, € 116 per person (5h, 4.42★ · 57).
Price per person across the 10 options priced per person: € 70–€ 232 (median € 114). With 100+ reviews: 2 of 11.
Of the 11 options: 11 with live guides in English, 11 with free cancellation, 9 with instant confirmation, 8 with hotel pickup, 9 kid-friendly, 3 private and 5 bookable last-minute.
How we rank: quality, number of reviews, availability, booking conditions and relevance to the topic. In the comparison table, our top 3 comes first. Prices are per person, except options priced per group: that price is for the whole group, and the per-person figure assumes the group is full. “Top rated” = the highest score among options with at least 50 reviews.
Postojna Cave Underground Tours
Based on each operator's calendar. Confirmed when you book.
11 options
Postojna Cave & Predjama Castle Tour from Ljubljana: Skip the Line Visit Postojna Cave's 21 km underground system and Predjama Castle on a 100-meter cliff with skip-the-line access, driver-guide and pickup from Ljubljana. Every day · 08:00, 09:00, 12:20 and 13:00 · Hotel pickup · All ages ★ 4.81 (1,192 reviews) Duration: 6h Live guide: EN ✓ Free cancellation. from € 114 per person
Postojna Cave Tickets: Train Ride Through Underground Chambers Half-day trip from Ljubljana to Postojna Cave and Predjama Castle with skip-the-line entry, electric train, guide, and all fees included. Next departure: 16 Mar 2027 · All ages ★ 4.59 (121 reviews) Duration: 5h 30m Live guide: EN ✓ Free cancellation. from € 109 per person
Postojna Cave & Predjama Castle Tour: Electric Train Ride Travel by underground electric train from Koper to Postojna Cave, then visit Predjama Castle clinging 123 meters up a cliff with guide and hotel pickup. Every day · No fixed time · Hotel pickup ★ 4.42 (57 reviews) Duration: 5h Live guide: EN · DE · IT ✓ Free cancellation. from € 116 per person
Postojna Cave & Predjama Castle from Koper: 5-Hour Tour Postojna Cave tour from Koper with electric train ride, underground walk & Predjama Castle photostop. 5 hours, AC transport, guide included, port pickup. Next departure: 8 May 2027 · All ages ★ 4.87 (61 reviews) Duration: 5h Live guide: EN ✓ Free cancellation. from € 99 per person
Postojna Cave & Predjama Castle tour from Koper Day trip from Koper cruise port featuring an electric train ride through Postojna Cave's chambers, a guided tour of Predjama Castle, and return transport to your ship. Every day · No fixed time ★ 4.79 (38 reviews) Duration: 5h Live guide: EN · CS · DE · IT +1 ✓ Free cancellation. from € 135 per person
Postojna Cave and Predjama Castle tour from Ljubljana Ride an underground train through Postojna Cave and tour clifftop Predjama Castle on this guided day trip from Ljubljana with hotel pickup. Next departure: 1 Apr 2027 · Hotel pickup · All ages ★ 4.96 (67 reviews) Duration: 5h 30m Live guide: EN ✓ Free cancellation. from € 70 per person
Postojna Cave tour from Koper: Ride the underground train Ride an electric train through a 24 km underground cave system from Koper, stopping at Predjama Castle for photos with guide and entrance fees. Every day · No fixed time · Pickup available ★ 4.48 (21 reviews) Duration: 5h Live guide: EN ✓ Free cancellation. from € 80 per person
Postojna Cave & Predjama Castle Tour: Cave Train Included Private tour from Bled visiting Postojna Cave's underground train and Predjama Castle, the world's largest cave castle, with professional guide. Every day · Every 30 min, 07:00 to 11:00 · Season until 30 Nov · Hotel pickup · All ages ★ 4.67 (6 reviews) Duration: 6h Live guide: EN · DE · IT · FR +1 ✓ Free cancellation. from € 225 per person
Postojna Cave & Predjama Castle tour from Slovenian Coast Six-hour tour from Portoroz with cave train and medieval castle entry included. Live guide in English, Spanish, Italian or French. Every day · Every 30 min, 07:00 to 11:00 · Hotel pickup · All ages ★ 4.50 (2 reviews) Duration: 6h Live guide: EN · DE · IT · FR +1 ✓ Free cancellation. from € 232 per person
Postojna Cave & Predjama Castle tour: Private excursion Eight-hour private tour from Koper port with guide, driver and hotel pickup: ride the electric train through Postojna Cave's underground chambers. Every day · 08:30 · Hotel pickup ★ 5.00 (2 reviews) Duration: 8h Live guide: EN ✓ Free cancellation. from € 630 per group
Postojna Cave and Predjama Castle Trip from Ljubljana On this trip you ride an electric train into Postojna Cave, walk its halls, then reach Predjama Castle, built into a 123 m cliff. Every day · 08:30 · Pickup available · All ages ★ 4.60 (5 reviews) Duration: 5h–6h Live guide: EN ✓ Free cancellation. from € 129 per person
All 11 options, side by side
✓ 2026-11-14| Option | Price | Duration | Rating | Days and times | Guide languages |
|---|---|---|---|---|---|
| Postojna Cave & Predjama Castle Tour from Ljubljana: Skip the LineOur pickPickup offered | € 114 per person | 6h | 4.81★ · 1,192 | Every day · 08:00, 09:00, 12:20 and 13:00 | English |
| Postojna Cave and Predjama Castle tour from LjubljanaTop ratedPickup offered | € 70 per person | 5h 30m | 4.96★ · 67 | Next departure: 1 Apr 2027 | English |
| Postojna Cave & Predjama Castle Tour: Electric Train RideShortestPickup offered | € 116 per person | 5h | 4.42★ · 57 | Every day · No fixed time | English, German, Italian |
| Postojna Cave Tickets: Train Ride Through Underground ChambersGroup of up to 8 | € 109 per person | 5h 30m | 4.59★ · 121 | Next departure: 16 Mar 2027 | English |
| Postojna Cave & Predjama Castle from Koper: 5-Hour Tour | € 99 per person | 5h | 4.87★ · 61 | Next departure: 8 May 2027 | English |
| Postojna Cave & Predjama Castle tour from Koper | € 135 per person | 5h | 4.79★ · 38 | Every day · No fixed time | English, Czech, German +2 |
| Postojna Cave tour from Koper: Ride the underground trainPickup offered | € 80 per person | 5h | 4.48★ · 21 | Every day · No fixed time | English |
| Postojna Cave & Predjama Castle Tour: Cave Train IncludedPrivate · Pickup offered | € 225 per person | 6h | 4.67★ only 6 reviews | Every day · Every 30 min, 07:00 to 11:00 · Season until 30 Nov | English, German, Spanish +2 |
| Postojna Cave & Predjama Castle tour from Slovenian CoastPrivate · Pickup offered | € 232 per person | 6h | 4.50★ only 2 reviews | Every day · Every 30 min, 07:00 to 11:00 | English, German, Spanish +2 |
| Postojna Cave & Predjama Castle tour: Private excursionPrivate · Pickup offered | € 630 per group up to 2 people · ≈ € 315 per person if 2 go | 8h | 5.00★ only 2 reviews | Every day · 08:30 | English |
| Postojna Cave and Predjama Castle Trip from LjubljanaGroup of up to 8 · Pickup offered | € 129 per person | 5h–6h | 4.60★ only 5 reviews | Every day · 08:30 | English |
By what you need
- Private (3): Postojna Cave & Predjama Castle Tour: Cave Train Included (€ 225 per person) · Postojna Cave & Predjama Castle tour from Slovenian Coast (€ 232 per person) · Postojna Cave & Predjama Castle tour: Private excursion (€ 630 per group)
- Small groups (up to 15) (2): Postojna Cave Tickets: Train Ride Through Underground Chambers (€ 109 per person) · Postojna Cave and Predjama Castle Trip from Ljubljana (€ 129 per person)