The 12 best of 15 options, side by side
✓ 2026-10-15Postojna Cave Castle Tours 15 options
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Postojna Cave & Predjama Castle Tour from Ljubljana: Skip LineVisit 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.★ 4.81 (1,174)6h✓ Free cancellationfrom€ 114per person
Ljubljana: Lake Bled, Postojna Cave & Predjama Castle Day TripFull-day small-group tour from Ljubljana to Lake Bled, Postojna Cave, and Predjama Castle. Includes pletna boat, underground train, and licensed guide. Hotel pickup available.★ 4.86 (946)10h✓ Free cancellationfrom€ 115per person
Ljubljana: Postojna Cave & Predjama Castle Small GroupHalf-day tour from Ljubljana visiting Predjama Castle and Postojna Cave with mini-train ride, local guide, and air-conditioned transport. Groups capped at 8 people.★ 4.84 (174)5h 30m✓ Free cancellationfrom€ 68per person
Lake Bled, Postojna Cave & Predjama Castle from LjubljanaFull-day tour from Ljubljana to Lake Bled, Postojna Cave and Predjama Castle with English-speaking guide, hotel pickup and discounted cave entry.★ 4.91 (141)10h 30m✓ Free cancellationfrom€ 119per person
Postojna Cave Tickets: Train Ride Through Underground ChambersHalf-day trip from Ljubljana to Postojna Cave and Predjama Castle with skip-the-line entry, electric train, guide, and all fees included.★ 4.58 (119)5h 30m✓ Free cancellationfrom€ 106per person
Ljubljana: Postojna Cave, Predjama Castle & Piran Day TripFull-day tour from Ljubljana to Postojna Cave with underground train, Predjama Castle, and Piran. Includes hotel pickup, English guide, and minivan transport. 10 hours.★ 4.97 (115)10h✓ Free cancellationfrom€ 112per person
Ljubljana: Postojna Cave, Predjama Castle & Piran Day TripFull-day tour from Ljubljana with Postojna Cave train ride, Predjama Castle entry, and Piran coastal walk. Tickets and transport included. Around 10 hours.★ 4.77 (71)10h 30m✓ Free cancellationfrom€ 139per person
Postojna Cave and Predjama Castle tour from LjubljanaRide an underground train through Postojna Cave and tour clifftop Predjama Castle on this guided day trip from Ljubljana with hotel pickup.★ 4.95 (66)5h 30m✓ Free cancellationfrom€ 70per person
Postojna Cave & Predjama Castle from Koper: 5-Hour TourPostojna Cave tour from Koper with electric train ride, underground walk & Predjama Castle photostop. 5 hours, AC transport, guide included, port pickup.★ 4.87 (61)5h✓ Free cancellationfrom€ 99per person
Postojna Cave & Predjama Castle Tour: Electric Train RideTravel by underground electric train from Koper to Postojna Cave, then visit Predjama Castle clinging 123 meters up a cliff with guide and hotel pickup.★ 4.41 (56)5h✓ Free cancellationfrom€ 116per person
Postojna Cave, Predjama Castle & Lake Bled from LjubljanaVisit three Slovenian landmarks on a full-day tour from Ljubljana: explore Postojna Cave's 21km of passages, see Predjama Castle on a cliff.★ 4.82 (45)11h 30m✓ Free cancellationfrom€ 121per person
Postojna Cave & Predjama Castle tour from KoperDay 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.★ 4.79 (38)5h✓ Free cancellationfrom€ 135per person
Postojna Cave & Predjama Castle Tour: Cave Train IncludedPrivate tour from Bled visiting Postojna Cave's underground train and Predjama Castle, the world's largest cave castle, with professional guide.★ 4.67 (6)6h✓ Free cancellationfrom€ 225per person
Postojna Cave & Predjama Castle tour: Private excursionEight-hour private tour from Koper port with guide, driver and hotel pickup: ride the electric train through Postojna Cave's underground chambers.★ 5.00 (2)8h✓ Free cancellationfrom€ 630per group
Postojna Cave & Predjama Castle tour from Slovenian CoastSix-hour tour from Portoroz with cave train and medieval castle entry included. Live guide in English, Spanish, Italian or French.★ 4.50 (2)6h✓ Free cancellationfrom€ 232per person
Postojna Cave Castle Tours at a glance
- Our pick: Postojna Cave & Predjama Castle Tour from Ljubljana: Skip Line, € 114 (6h, 4.81★ · 1,174).
- Best value: Ljubljana: Postojna Cave & Predjama Castle Small Group, € 68 (5h 30m, 4.84★ · 174).
- Top rated: Ljubljana: Postojna Cave, Predjama Castle & Piran Day Trip, € 112 (10h, 4.97★ · 115).
Real price per person across the 15 options: € 68–€ 232 (median € 115). With an extra fee to pay on site: 5 of 15. With 100+ reviews: 6 of 15.
Of the 15 options: 15 with free cancellation, 13 with instant confirmation, 10 with hotel pickup, 15 kid-friendly, 1 private and 11 last-minute.
How we rank: quality, number of reviews and relevance to the topic. In the comparison table, our top 3 comes first. Real price per person: the group price divided by the seats it includes.
Frequently asked questions
Can I book with free cancellation?
Yes: 15 of the 15 options offer free cancellation, so you can book now and confirm your plans later.
How long do these experiences last?
Most options last half a day or longer. There are also shorter and longer formats to fit your itinerary.
Which one is the travelers' favorite?
Postojna Cave & Predjama Castle Tour from Ljubljana: Skip Line is the travelers' favorite, rated 4.81 out of 5 across 1,174 reviews.