
Postojna Cave and Predjama Castle Tour from Ljubljana
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September 2026
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Who is going?
Adults
Age 13 and over
Children
Age 12 and under
Select a highlighted day to see live departure times and the exact price for your group.
Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
5.0/5
Based on 5 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Postojna Cave and Predjama Castle Tour from Ljubljana worth booking?
Postojna Cave and Predjama Castle Tour from Ljubljana is a 5-hour experience in Ljubljana, Slovenia, from $100 per person. It scores 62 out of 100 on the Outty Ranking, which we label “Solid Choice”, based on a 5/5 rating across 5 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 62 / 100
- Rating
- 5/5 (5)
- Duration
- 5 hours
- From
- $100 per person
Discover the unparalleled beauty of Slovenia with our day trip to Postojna Cave and Predjama Castle. What sets us apart is our commitment to providing an immersive and unforgettable experience from start to finish. Begi
What you get
- Bottled water
- On-board WiFi
- In-vehicle air conditioning
- Parking fees
About this experience
Discover the unparalleled beauty of Slovenia with our day trip to Postojna Cave and Predjama Castle. What sets us apart is our commitment to providing an immersive and unforgettable experience from start to finish. Begin your journey by delving into the mesmerizing underground world of Postojna Cave, where ancient formations and rare creatures await. Led by expert guides. Next, we'll transport you to Predjama Castle, an architectural marvel nestled within a cliffside cave to enjoy the view. With our attention to detail and personalized service, you can rest assured that every aspect of your day trip is carefully curated to exceed your expectations. Whether you're a nature enthusiast, a history buff, or simply seeking a day of exploration, our tour promises an unforgettable experience that will leave you with memories to last a lifetime. Don't miss out on this extraordinary journey through Slovenia's most iconic landmarks. Book your adventure with us today!
What's included
Included
- Bottled water
- On-board WiFi
- In-vehicle air conditioning
- Parking fees
Not included
- Snacks
- Gratuities
- Admission fees
What you'll see and do
Postojna Cave
Postojna Cave, in Slovenia, is a captivating natural wonder known for its intricate underground formations and rich biodiversity. Carved by the Pivka River over millions of years, this vast karst cave system spans 24 kilometers, boasting labyrinthine passages and majestic chambers adorned with stalactites and stalagmites. A highlight is its unique ecosystem, home to rare species like the olm, or "human fish." Guided tours offer insights into the cave's geology, history, and conservation efforts. Explore this subterranean marvel for an unforgettable journey into a hidden world of surreal beauty and ecological significance.
120 minutes here · Admission included
Predjama Castle
Predjama Castle is a captivating medieval fortress nestled within a cliffside cave in Slovenia. Its dramatic location and rich history make it a must-visit destination for travelers. Explore its intriguing architecture and legendary tales on a quick stop that promises to leave a lasting impression.
15 minutes here · Admission not included
Where it starts and ends
Hotel pickup
Pickup is included for all travelers. Pickup begins about 5 minutes before departure.
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 8 travelers per booking
- Operated by
- Adventure holiday tours
Know before you go
- Wheelchair accessible
- Infants and small children can ride in a pram or stroller
- Specialized infant seats are available
- Travelers should have at least a moderate level of physical fitness
- Total Tour duration Includes Travel Time
Photos






Good to know
- Duration
- 5 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- 1+
- Availability
- Bookable today
- Runs on
- Every day
- Price range
- $100 to $270
- Hotel pickup
- Included for all travelers
- Booked in 30 days
- 2
- Verdict
- Solid Choice
Why this scores 62
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Postojna Cave and Predjama Castle Tour from Ljubljana: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Ljubljana.
How much does Postojna Cave and Predjama Castle Tour from Ljubljana cost?
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Prices start at $100 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Ljubljana usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Postojna Cave and Predjama Castle Tour from Ljubljana take?
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Plan for about 5 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Ljubljana is not rushed.
Is Postojna Cave and Predjama Castle Tour from Ljubljana worth it?
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It holds an Outty Ranking of 62 out of 100, which we label "Solid Choice". That score blends traveler sentiment (5/5 across 5 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Ljubljana, and how flexible the cancellation terms are.
Can I cancel or reschedule Postojna Cave and Predjama Castle Tour from Ljubljana?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Postojna Cave and Predjama Castle Tour from Ljubljana suitable for kids and families?
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The operator sets a minimum age of 1. Older children generally do well here, and families should factor in the 5-hour running time when deciding.
How far in advance should I book Postojna Cave and Predjama Castle Tour from Ljubljana?
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Around 2 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Ljubljana can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Ljubljana and add a light layer if any part of the 5-hour experience runs outdoors or after sunset.
Where does Postojna Cave and Predjama Castle Tour from Ljubljana start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Ljubljana within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Ljubljana?
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On Outty we rank every Ljubljana experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama, Postojna Cave and Predjama Castle - Entrance Tickets Included, Lake Bled and Bohinj with Savica waterfall included. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Ljubljana?
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Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Ljubljana?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
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