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Home/Slovenia/Postojna Cave

Postojna Cave: Slovenia's Ultimate Underground Adventure

Embark on an unforgettable subterranean adventure through Postojna Cave, one of the world's most stunning karst cave systems. Journey deep into the heart of Slovenia with a unique electric train ride, marveling at breathtaking stalactites, stalagmites, and rare cave fauna. Whether you are seeking a guided cave tour, a historical sightseeing adventure, or a day trip to nearby Predjama Castle, our curated experiences offer something for every traveler. Discover the magic of this natural wonder and book your professional guided tour today for a truly spectacular underground experience!

4.75/5 avg ratingFrom $89.54 per person82 unique experiences91% free cancellation

At a glance

Tour Price

Tour Price

$136–$424 typical

Median price is $180, with a range up to $917

Rating

Rating

4.75★ average

Based on 3,372 pooled reviews with ~89% positive sentiment

Tour Length

Tour Length

5–11 hours typical

Median duration is 6.5 hours

Best For

Best For

Nature & Cave Tours

Nature themes (94%) and Cave Tours (80%) are most common

Booking Perks

Booking Perks

91% free cancellation

94% of options also offer instant confirmation

Languages

Languages

8 languages offered

Includes English, Italian, German, Spanish, French, Croatian, Chinese, and Czech

82 Products

Postojna Cave and Predjama Castle - Entrance Tickets Included

Postojna Cave and Predjama Castle - Entrance Tickets Included

6 hrsEco-FriendlyFree cancellation
4.83 (1,021 reviews)
90.54%
9.46%
Lovely tripFabulousvery good experience
Viator
$128
Book now
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Postojna Cave and Predjama Castle - Entrance Tickets Included
Summary

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 elec...

Inclusions
  • 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
  • English Speaking Driver/Guide
Exclusions
  • Food and drinks
  • Your personal expenses
Itinerary
  • Postojna Cave
  • Predjama Castle
Good to know
  • 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.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama

Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama

10 hrsEco-FriendlyFree cancellation
4.86 (911 reviews)
88.54%
11.46%
stunninggreat tourvery best tour guides
Viator
$153
Book now
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Slovenia in One Day: Small-Group Bled, Postojna Cave & Predjama
Summary

The Slovenia in One Day tour, running small-group from Ljubljana since 2011: Lake Bled, Postojna Cave, and Predjama Castle in one day, with a licensed local guide and no more than 8 guests. One day, three of Slovenia's best-known places! You'll glide across Lake Bled on a traditional pletna boat t...

Inclusions
  • Central Ljubljana meeting point
  • Licensed local English-speaking guide-driver
  • Comfortable air-conditioned minivan, small group of up to 8, not a big coach
Exclusions
  • Pletna boat ride to Bled island
Itinerary
  • Postojna Cave
  • Predjama Castle
  • Lake Bled
  • Bled Island
  • Bled Castle (Blejski Grad)
Good to know
  • 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, Minimum numbers 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 or full refund., Please keep in mind that there are quite a few stairs at the Bled island, Bled castle, and Predjama castle, but you would do that in a fairly slow pace., Small group tour - up to 8 people per van., Warm and comfortable clothes and footwear are essential to visit the Postojna cave (temperature in the cave is 9°C / 48 Fahrenheit).
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Postojna cave, Predjama castle and Piran tour from Ljubljana

Postojna cave, Predjama castle and Piran tour from Ljubljana

10 hrsEco-FriendlyFree cancellation
4.97 (93 reviews)
96.29%
3.71%
excelenteGreat tripterrific tour guide
Viator
$132
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Postojna cave, Predjama castle and Piran tour from Ljubljana
Summary

The road will initially lead us to the Postojna cave, where we will admire one of the most popular karst caves in the world. While riding on the cave train, everyone will be fascinated by the cave's might and its karst phenomena. We will then continue our trip and reach the unique and largest cave c...

Inclusions
  • Hotel pick up and drop off
  • Professional English speaking guide
  • Transport by air-conditioned minivan
Exclusions
  • Food and drink
  • Gratuities (optional)
  • Postojna Cave and Predjama Castle entrance fee
  • Postojna Cave ticket only (without Castle) - 29,5 €
Itinerary
  • Postojna Cave
  • Predjama Castle
  • Piran
Good to know
  • Specialized infant seats are available, Suitable for all physical fitness levels
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Postojna Cave and Predjama Castle - Private Tour from Trieste

Postojna Cave and Predjama Castle - Private Tour from Trieste

6 hrsSkip the linePrivate tourFree cancellation
5 (11 reviews)
95.74%
4.26%
Muy buenoMarvelous experiencewould recommend
Viator
$292
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Postojna Cave and Predjama Castle - Private Tour from Trieste
Summary

Wonderland Does Exist! Join us on this exclusive small group shore excursion journey to the world`s famous Postojna Cave and fairytale Predjama Castle in a comfortable, clean, air conditioned up to date passenger van for up to 8 persons max. Definitely one of the best options to experience sLOVEnia...

Inclusions
  • Ticket for the Predjama Castle
  • English speaking driver/ escort / guide
  • All Private Transportation
  • Basic Insurance
  • Complimentary bottle of water
  • All transportation in up to date comfortable, air- conditioned passenger van for up to 8 persons
  • Hotel or cruise port pickup and drop-off
  • Ticket for the cave
Exclusions
  • Food is not included.
Itinerary
  • Trieste Terminal Passeggeri
  • Postojna Cave
  • Predjama Castle
  • Trieste Terminal Passeggeri
Good to know
  • Wheelchair accessible, Infants and small children can ride in a pram or stroller, Service animals allowed, Specialized infant seats are available, Transportation options are wheelchair accessible, All areas and surfaces are wheelchair accessible, Suitable for all physical fitness levels, All participants under the age of 18 must have at least one adult in the group, Small group goes for the time of transportation only (up to 20). Since the caves are under national protection you will join a larger group guided by a local cave guide, Pickup is from Trieste cruise terminal but is also available from any location within Trieste town limits. Please provide us pickup location at the time of booking reservation., Children aged 5 and younger pay only insurance (1 Eur), You will receive exact optimized tour departure time by the last week before the tour after we receive the final update for the ship arrival / departure times from the port authorities, Please provide your ship name and arriv dissembark/ departure times at the time of booking., PLEASE BE AWARE THAT THE TEMPERATURE IN THE CAVES IS AROUND 10 degrees Celsious or 50 degrees Fahrenheit ALL YEAR ROUND SO WEAR APPROPRIATE CLOTHES. (SPORT SHOES AND A JACKET), This tour operates in all weather conditions so please wear appropriate clothes in case of wind or rain.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Slovenian highlights - Lake Bled, Postojna Cave & Predjama Castle from Ljubljana

Slovenian highlights - Lake Bled, Postojna Cave & Predjama Castle from Ljubljana

10.5 hrsFree cancellation
4.93 (102 reviews)
94.65%
5.35%
fantasticfantastic tourhighly recommend
Viator
$140
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Slovenian highlights - Lake Bled, Postojna Cave & Predjama Castle from Ljubljana
Summary

This full-day tour will start in the heart of the Alps, where we will visit one of the largest natural attractions in Slovenia - Lake Bled. Besides the blue-green lake, we will be able to admire also the picturesque architecture of the Bled castle, which is built atop a cliff that rises above the la...

Inclusions
  • Discount on tickets for Postojna Cave and Predjama Castle (13% off through our tourist agency)
  • Hotel pick up and drop off
  • Professional English speaking guide
  • Transport by air-conditioned minivan
Exclusions
  • Food and drink
  • Postojna Cave and Predjama Castle entrance fee (41,5 €)
  • Optional: Pletna boat (20€) - cash only
  • Optional: Bled castle entrance fee (19€)
Itinerary
  • Bled
  • Postojna Cave
  • Predjama Castle
Good to know
  • Specialized infant seats are available, Suitable for all physical fitness levels
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

The Best of Slovenia: Bled Lake, Postojna Cave & Ljubljana

The Best of Slovenia: Bled Lake, Postojna Cave & Ljubljana

10 hrsFree cancellation
4.96 (24 reviews)
96.76%
3.24%
amazingenjoyed our tripenjoyed
Viator
$352
Book now
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The Best of Slovenia: Bled Lake, Postojna Cave & Ljubljana
Summary

Discover the Best of Slovenia in 1 day on this day trip from Zagreb. Enjoy the view of Bled lake, explore Postojna cave and get to know Ljubljana the capital of Slovenia.

Inclusions
  • Hotel pickup and drop-off
  • Driver/guide
Exclusions
  • Food and drinks, unless specified
Itinerary
  • Zico Tours
  • Postojna Cave
  • Lake Bled
  • Ljubljana Old Town
  • Zagreb Glavni Kolodvor
Good to know
  • Travelers should have at least a moderate level of physical fitness, Children must be accompanied by an adult
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Best of Slovenia: Bled, Postojna, Ljubljana Day Tour from Zagreb

Best of Slovenia: Bled, Postojna, Ljubljana Day Tour from Zagreb

12 hrsFree cancellation
4.95 (22 reviews)
100%
0%
fantasticcomfortablebest day tour
Viator
$259
Book now
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Best of Slovenia: Bled, Postojna, Ljubljana Day Tour from Zagreb
Summary

We are specialized in providing day tours from Zagreb. Best of Slovenia tour offers unique opportunity to visit Slovenia top highlights on a tour from Zagreb to Postojna Cave, Lake Bled, and Ljubljana. During the Slovenia day tour you’ll be free to explore each destination. This tour ensures good s...

Inclusions
  • Guide
  • Free Hotel pickup and drop-off
Itinerary
  • Postojna Cave
  • Bled Island
  • Bled
  • Ljubljana Old Town
Good to know
  • Wheelchair accessible, Infants and small children can ride in a pram or stroller, Service animals allowed, Specialized infant seats are available, Travelers should have at least a moderate level of physical fitness
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Postojna cave and Predjama castle Tour from Ljubljana

Postojna cave and Predjama castle Tour from Ljubljana

5.5 hrsFree cancellation
4.94 (32 reviews)
97.1%
2.9%
Amazinghighly recommendexcellent experience
Viator
$82
Book now
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Postojna cave and Predjama castle Tour from Ljubljana
Summary

A half-day trip from Ljubljana to Postojna Cave and Predjama Castle is an unforgettable experience for visitors. Postojna Cave is one of the largest karst caves globally, renowned for its impressive stalactite formations and unique underground life, including rare cave-dwelling animals. Visitors tra...

Inclusions
  • Discount on tickets for Postojna Cave and Predjama Castle (10% off through our tourist agency)
  • Hotel pick up and drop off
  • Professional English speaking guide
  • Transport by air-conditioned minivan
Exclusions
  • Food and drink
  • Gratuities (optional)
  • Postojna Cave and Predjama Castle entrance fee - 41,5 €
  • Postojna Cave entrance (without the Castle) - 29,5 €
Itinerary
  • Postojna Cave
  • Predjama Castle
Good to know
  • Service animals allowed, Specialized infant seats are available, Suitable for all physical fitness levels
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Ljubljana: Postojna cave & Predjama castle small group tour

Ljubljana: Postojna cave & Predjama castle small group tour

5.5 hrsFree cancellation
4.83 (167 reviews)
91.52%
8.48%
fantasticPerfect tripPerfect guide
Viator
$89
Book now
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Ljubljana: Postojna cave & Predjama castle small group tour
Summary

Visit two of Slovenia’s top attractions in one afternoon on this small-group, half-day tour from Ljubljana. Begin at Predjama Castle, perched on a cliff high above the beautiful Inner Carniola region. Explore the chambers and stairwells and learn about the castle’s most famous resident, Erazem of Pr...

Inclusions
  • Central Ljubljana meeting point
  • Comfortable transport by air-conditioned minivan
  • Professional English speaking guide
Exclusions
  • Postojna Cave & Predjama Castle combined ticket: from 45 € per person (dynamic prices)
  • Postojna cave only: from 33 € per person
Itinerary
  • Predjama Castle
  • Postojna Cave
Good to know
  • Travelers should have at least a moderate level of physical fitness, Minimum numbers 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 or full refund., Not wheelchair accessible., Please keep in mind that there are quite a few stairs at the Predjama castle, but you would do that in a fairly slow pace., Small group tour - up to 8 people per van., Warm and comfortable clothes and footwear are essential to visit the Postojna cave (temperature in the cave is 9°C / 48 Fahrenheit).
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

Ljubljana, Postojna Cave&Predjama Castle with Tickets from Zagreb

Ljubljana, Postojna Cave&Predjama Castle with Tickets from Zagreb

11 hrsFree cancellation
4.91 (35 reviews)
94.52%
5.48%
amazinginterestinghappy
Viator
$200
Book now
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Ljubljana, Postojna Cave&Predjama Castle with Tickets from Zagreb
Summary

Discover the biggest gems of Croatia’s neighboring country - Slovenia. We start with Postojna cave to soak up some mesmerizing views of underground karst life. After a guided tour in the cave we continue to the astonishing Predjama Castle. We conclude the experience with Ljubljana, an enchanting cit...

Inclusions
  • Predjama Castle entrance fee with audio guide
  • Transport by air-conditioned vehicle
  • Postojna cave entrance fee with guided tour
  • Professional English speaking guide
  • Ljubljana city tour with licensed guide
  • Hotel pickup and drop-off (selected hotels only)
Exclusions
  • Food and drinks
Itinerary
  • Postojna Cave
  • Predjama Castle
  • Ljubljana
Good to know
  • Public transportation options are available nearby, Not recommended for travelers with poor cardiovascular health, Suitable for all physical fitness levels, Instant confirmation at the time of your booking., Small group for a GREAT experience (maximum 8 participants)., A moderate amount of walking with some steep parts is involved., The temperature in the cave is around 8 Celsius (46 Fahrenheit), please wear appropriate warm clothes., The tour operates in all weather conditions.
Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

...

Pairs well with

Landmarks travelers visit on the same route as Postojna Cave.

Predjama Castle (Predjamski Grad)
Learn more

Predjama Castle (Predjamski Grad)

7.0 km away • from $34

Skocjan Caves (Skocjanske Jame)
Learn more

Skocjan Caves (Skocjanske Jame)

21 km away • from $94

Hrastovlje
Learn more

Hrastovlje

38 km away • from $102

Portoroz
Learn more

Portoroz

56 km away • from $30

Frequently Asked Questions

Get answers to the most common questions travelers ask before visiting.

Among the tours we compare across booking platforms, prices typically fall between $90 and $917, with most options clustering in the $136–$424 range and a median of around $180. The variation reflects different tour lengths, group sizes, and what's included, so it's worth checking what each option offers before booking.

The cave earns an impressive 4.75 stars across more than 3,300 combined reviews across booking platforms. Reviewers consistently use words like amazing, fantastic, excellent, and stunning when describing the experience. Around 89% of reviews are positive overall, making it one of the standout natural attractions in the region.

Private tours are unusually common here, accounting for 38% of the options we compare. They're ideal if you want a flexible pace, personalized attention, or to travel with your own group. Most private options still include a professional guide and come with free cancellation, so they're worth considering even if they cost more than group alternatives.

Tours typically last between 5 and 11 hours, with most averaging around 6.5 hours. The length depends on whether the tour combines the cave with nearby attractions like Predjama Castle or a city visit, so check the itinerary when booking to match it to your schedule.

The most common inclusions are a professional guide (84% of options), entry to the cave itself (29%), and hotel pickup and drop-off (46%). About a quarter of tours also include transport to the site. Since coverage varies, always review what's bundled before you book to avoid surprises.

Yes, free cancellation is standard here. 91% of the options we compare offer free cancellation, so you can book with confidence and adjust your plans if needed. Additionally, 94% offer instant confirmation, meaning you'll have your booking confirmed immediately.

About 24% of the options we compare are tagged as eco-friendly across booking platforms. If sustainability matters to you, filter for these when browsing, though it's worth checking the tour description to understand what that label means for each specific option.

Take a direct train from Ljubljana to Postojna, which takes about 30 minutes. Trains run frequently throughout the day. You can also rent a car or join a guided tour from Ljubljana.

The main cave passages are mostly accessible with paved paths and elevators. However, some sections require climbing stairs. Contact the cave office in advance to discuss your specific needs.

Yes, caves are open year-round. Winter visits offer fewer crowds and cooler temperatures inside. The cave maintains a constant 8-10°C temperature, so bring a jacket regardless of season.

Predjama Castle (Predjamski Grad)7kmSkocjan Caves (Skocjanske Jame)21.1kmLipica28kmLjubljanica River33.9kmKrizanke Summer Theatre (Poletno Gledalisce Krizanke)37.3kmCankar Centre (Cankarjev Dom)37.4kmNational and University Library of Slovenia (Narodna in Univerzitetna Knjiznica)37.4kmTivoli Park and Mansion37.6kmMuseum of Illusions Ljubljana37.6kmCobblers' Bridge (Cevljarski Most)37.6kmCongress Square (Kongresni Trg)37.6kmLjubljana Castle (Ljubljanski Grad)37.8km