Postojna Cave and Predjama Castle - Entrance Tickets Included in Ljubljana
Ljubljana, Slovenia

Postojna Cave and Predjama Castle - Entrance Tickets Included

Outty Ranking 91 4.8 · 1,131 traveler reviews6 hoursFrom $5790+ Club

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September 2026

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Adults

Age 13 and over

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Age 12 and under

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Outty Ranking

91/100

90+ Club. Our proprietary evaluation. How we score

Traveler rating

4.8/5

Based on 1,131 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.

Quick answer

Is Postojna Cave and Predjama Castle - Entrance Tickets Included worth booking?

Postojna Cave and Predjama Castle - Entrance Tickets Included is a 6-hour experience in Ljubljana, Slovenia, from $57 per person. It scores 91 out of 100 on the Outty Ranking, which we label “90+ Club, based on a 4.8/5 rating across 1,131 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing. It sits in the Outty 90+ Club, the top tier of everything we rank.

Outty Ranking
91 / 100
Rating
4.8/5 (1,131)
Duration
6 hours
From
$57 per person

On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible network

What you get

  • Entrance to Postojna cave
  • Pick up and drop of service in central Ljubljana
  • Entrance to Predjama Castle
  • Audio guide in Predjama Castle
  • Skip the line service
  • In-vehicle air conditioning

About this experience

On this day we take you to the biggest and worldwide known Slovenian cave system - the Postojna caves. Amazing two million years old and 21 km long system of underground caves is one of the most easily accessible networks of underground caves in the world. First, you will experience the ride by electric train, after that, a guided walk will follow through a series of cave halls with drop stones, pillars, and translucent curtains that create unforgettable impressions. The underworld system is home to the mysterious, unique, and rare amphibian Proteus Anguinus, or "baby dragon" as it is popularly called here. Back in the daylight, the trip will continue towards the astonishing castle of the robber knight Erasmus. For centuries dramatically hanging in over a 100-meter-high vertical cliff, it's waiting for you to enter and discover its secrets, legends, and myths. Driving through the green scenery, we return to Ljubljana.

What's included

Included

  • Entrance to Postojna cave
  • Pick up and drop of service in central Ljubljana
  • Entrance to Predjama Castle
  • Audio guide in Predjama Castle
  • Skip the line service
  • In-vehicle air conditioning
  • English Speaking Driver/Guide

Not included

  • Food and drinks
  • Your personal expenses

What you'll see and do

  1. Postojna Cave

    Postojna cave entrance fee

    90 minutes here · Admission included

  2. Predjama Castle

    Predjama Castle entrance fee

    60 minutes here · Admission included

Where it starts and ends

Hotel pickup

Pickup is included for all travelers.

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 15 travelers per booking
Operated by
To do in Slovenia

Know before you go

  • Public transportation options are available nearby
  • Specialized infant seats are available
  • Suitable for all physical fitness levels
  • There is a constant temperature of 10°C (50°F) in the caves, dress properly, and wear comfortable shoes (flipflops are not recommended).
  • The minimum number of participants must apply. There is a possibility of cancellation after confirmation if there are not enough passengers to meet requirements. In the event of this occurring, you will be offered an alternative date/tour or full refund.
  • In case you fail to provide us with a desired meeting point up until 24h before departure, your meeting point will be the City hotel (Dalmatinova 15, 1000 Ljubljana)
  • Child rate applies only when sharing with 2 paying adults.

Photos

Postojna cave pathTrain ride inside Postojna CaveInside of Postojna caveWalk through Postojna CaveProteus - ''human fish'' or so called "dragon babies"Postojna Cave entrance

Good to know

Duration
6 hours
Free cancellation
Up to 24h before
Minimum age to book
All ages
Availability
Bookable today
Runs on
Every day
Price range
$57 to $114
Hotel pickup
Included for all travelers
Booked in 30 days
396
Verdict
90+ Club

Why this scores 91

The Outty Ranking is a weighted composite. Here is how this experience performed on each component.

Traveler sentiment (30% weight)86
Review evidence (18% weight)100
Booking momentum (14% weight)100
Value for money (12% weight)95
Listing quality (10% weight)100
Local standing (8% weight)52
Booking flexibility (8% weight)100

Postojna Cave and Predjama Castle - Entrance Tickets Included: questions travelers ask

Practical detail on this experience, plus the wider planning questions for Ljubljana.

How much does Postojna Cave and Predjama Castle - Entrance Tickets Included cost?

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Prices start at $57 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 - Entrance Tickets Included take?

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Plan for about 6 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 - Entrance Tickets Included worth it?

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It holds an Outty Ranking of 91 out of 100, which we label "90+ Club". That score blends traveler sentiment (4.8/5 across 1,131 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most popular in Ljubljana, and how flexible the cancellation terms are. Scoring 90 or above puts it in the Outty 90+ Club, the top tier of everything we rank.

Can I cancel or reschedule Postojna Cave and Predjama Castle - Entrance Tickets Included?

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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 - Entrance Tickets Included suitable for kids and families?

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Yes, all ages are welcome. Families should still weigh the 6-hour running time, and strollers are easier on the earlier, quieter departures.

How far in advance should I book Postojna Cave and Predjama Castle - Entrance Tickets Included?

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Around 396 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 6-hour experience runs outdoors or after sunset.

Where does Postojna Cave and Predjama Castle - Entrance Tickets Included 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, Lake Bled and Bohinj with Savica waterfall included, Classic Ljubljana Group Tour. 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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