Underground Tours in Ljubljana at a glance
- Our pick: Postojna Cave & Predjama Castle Tour from Ljubljana: Skip the Line, € 114 per person (6h, 4.81★ · 1,192).
- Best value: Postojna Cave and Predjama Castle tour from Ljubljana, € 70 per person (5h 30m, 4.96★ · 67).
- Also recommended: Postojna Cave Tickets: Train Ride Through Underground Chambers, € 109 per person (5h 30m, 4.59★ · 121).
Price per person across the 5 options priced per person: € 70–€ 130 (median € 114). With 100+ reviews: 2 of 5.
Of the 5 options: 5 with live guides in English, 5 with free cancellation, 5 with instant confirmation, 3 with hotel pickup, 5 kid-friendly, 1 private and 3 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. Price per person.
Underground Tours in Ljubljana — Predjama Castle, Postojna Cave and 1 more
Based on each operator's calendar. Confirmed when you book.
5 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 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
Skocjan Cave Day Trip: Underground Walk with Local Guide Day trip from Ljubljana to Skocjan Cave with English-speaking driver-guide, hotel pickup at 8:30am, and a guided walk through the caves. Add Piran Coast. Every day · 08:30 · All ages ★ 5.00 (8 reviews) Duration: 5h Live guide: EN ✓ Free cancellation. from € 130 per person
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 5 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 LjubljanaBest valuePickup offered | € 70 per person | 5h 30m | 4.96★ · 67 | Next departure: 1 Apr 2027 | English |
| Postojna Cave Tickets: Train Ride Through Underground ChambersAlso recommendedGroup of up to 8 | € 109 per person | 5h 30m | 4.59★ · 121 | Next departure: 16 Mar 2027 | English |
| Skocjan Cave Day Trip: Underground Walk with Local GuidePrivate | € 130 per person | 5h | 5.00★ only 8 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 (1): Skocjan Cave Day Trip: Underground Walk with Local Guide (€ 130 per person)
- 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)