Dec – Feb
Short days
The shortest daylight of the year, which makes the five-and-a-half-hour listings the sensible choice and the 11.5-hour ones a long day in the dark at both ends.
Day trip
Ten of the sixteen listings on this site say in their own descriptions that they leave from the Slovenian capital, and a Postojna cave tour from Ljubljana is what most visitors end up booking, because the road out is about an hour in each direction. That single hour decides the shape of everything else. Two hours of driving is why the pair of the cave and Predjama Castle fits inside five and a half to six hours, and why adding Lake Bled pushes the same day out to ten, eleven or eleven and a half. This page sets the ten side by side using nothing but their own figures: fare, rating, review count and length. The lowest is $74 at six hours; the longest and highest-priced of the ten is $228. Our pick is $192, rated 4.8 from 878 reviews.

Quick answer
The short answer. If you want a Postojna cave tour from Ljubljana and want to be back for dinner, book one of the two short ones: $79, five and a half hours with a private transfer for up to eight and a rating of 4.9, or $121, also five and a half, with tickets included and a rating of 4.8. If you want the most tested booking, take $130 with its 2,846 reviews at 4.8 over six hours. If you would rather spend the whole day out and see Lake Bled as well, $192 is our pick at 11.5 hours, and $127 does the same three sights in small groups of up to eight. Free cancellation applies on every tour on this site.
The one thing to understand
Every Postojna cave tour from Ljubljana is built around the same journey: about an hour south, and about an hour back. Nothing on this page is more useful than holding that figure in your head while you read fares, because it explains why the ten listings fall into two clean groups rather than sitting on a smooth scale.
The short group: five and a half to six hours. Two hours of that is road. What remains is enough for the cave and for Predjama Castle nine kilometres further on, and that is exactly what these listings sell. $79 does it in five and a half with a private transfer for up to eight people and an English driver-guide, rated 4.9 from 490 reviews. $121 does it in the same time with tickets included, rated 4.8. $74 takes six hours and is the lowest fare on the whole site. $130 also takes six and carries more reviews than any other listing here.
The long group: ten to eleven and a half hours. Once a third sight goes into the day, the arithmetic changes completely. $192 and $164 both run 11.5 hours; $127 runs eleven; $131 and $118 run ten. A Postojna cave tour from Ljubljana of that length is a full day out and should be planned as one, not slotted around a lunch reservation in the capital.
Why there is nothing in between. There is no seven-hour version of the cave and Bled, because the driving does not allow one. The only seven-hour listing of the ten is $228, which spends the extra time differently: it adds a boat tour and the park around the cave rather than a second town. That is the honest shape of this niche, and it is better to choose within it than to hope for a compromise nobody sells.
The ten, on their own figures
Fare, rating, reviews and length, ordered from the shortest day to the longest. Nothing here is our judgement; all of it is printed on the listing pages.
| The listing | Fare | Rating and reviews | Length |
|---|---|---|---|
| A private transfer for up to 8, with the castle | $79 | 4.9 · 490 | 5.5 hours |
| The half day with tickets included | $121 | 4.8 · 199 | 5.5 hours |
| The guided trip, lowest fare on this site | $74 | 4.6 · 212 | 6 hours |
| The tickets-and-tour listing, most reviewed here | $130 | 4.8 · 2,846 | 6 hours |
| The day that adds a boat tour | $228 | 3.8 · 4 | 7 hours |
| Three sights with a pletna boat to Bled Island | $131 | 4.9 · 288 | 10 hours |
| The small-group day that adds Piran | $118 | 4.9 · 459 | 10 hours |
| Three sights in small groups up to 8 | $127 | 4.9 · 178 | 11 hours |
| Cave, castle and Lake Bled in a group | $164 | 4.7 · 228 | 11.5 hours |
| Our top pick: Lake Bled and the cave, tickets in | $192 | 4.8 · 878 | 11.5 hours |
| All ten | Free cancellation | Stated on the listing page | As booked |

Choosing between the ten
All ten go to the same cave. Nine of the ten also go to Predjama Castle. So the real decision is about the shape of your day, and there are only three questions worth asking.
How long do you want to be out? Five and a half hours leaves you most of a day in the capital. Eleven and a half does not. If this is your only full day in Slovenia, the long version earns its fare: $192 at 11.5 hours is our pick on this site and its 878 reviews at 4.8 are the second-largest body of evidence here. If you have a week, a short Postojna cave tour from Ljubljana leaves room for everything else.
How big a group can you live with? Three listings state their own ceiling: $118 and $127 both cap at eight guests, and $79 is a transfer for up to eight with an English driver-guide. All three are rated 4.9. A small vehicle is a different day from a coach, and these are the listings that put a number on it rather than leaving you to guess.
What else do you want in the day? This is where the ten genuinely differ. $131 is the fullest itinerary of the lot: Lake Bled, a traditional pletna boat out to Bled Island, Bled Castle, Predjama Castle and a train ride into the cave, all inside ten hours, rated 4.9 from 288 reviews. $118 swaps the lake for the Adriatic and the old coastal town of Piran. $228 adds a boat tour and the park around the cave. A Postojna cave tour from Ljubljana can be a cave trip, a lake trip or a coast trip — the fare follows the itinerary, not the cave.
One word about the newest listing. $228 has four reviews so far, at 3.8. Four reviews is not evidence of much in either direction, and we say so rather than dressing a thin number up as a verdict. It is the listing that adds a boat tour, and if that is what you want, it is the only one here that offers it.
Before you book
Read off the listing pages and the plain geography of the route. None of it is a promise about weather, crowds or what the cave will look like on the day.
About an hour each way. It is the reason a Postojna cave tour from Ljubljana of five and a half hours covers the cave and the castle and stops there.
Nine of these ten listings include Predjama Castle, nine kilometres from the cave. If you specifically do not want it, $192 is the one here that pairs the cave with Lake Bled instead.
Several descriptions say so outright, including $192 and $121. Check the inclusions on the listing page before you book, because that page is what governs.
Eight guests maximum on $118 and $127, and up to eight in the private transfer of $79. All three sit at 4.9.
That does not change with the season, so pack a jacket for the cave even when the capital is warm. Nobody can tell you what the surface weather will do.
$164 and $192 cost more than the half days because they add Lake Bled and 11.5 hours of guiding, and $228 costs more because it adds a boat tour. Everyone sees the same passages below ground. If a lake or a boat is what you came for, the extra fare is buying exactly that.
The window is stated on the listing page. On a long day out with an early start, that is worth reading before you commit.

Through the year
Five bars, one for each part of the year. All ten listings run through the year, and the cave itself is unchanged at about 10 °C; what the bars measure is how much daylight the above-ground half of the day has to work with.
Dec – Feb
The shortest daylight of the year, which makes the five-and-a-half-hour listings the sensible choice and the 11.5-hour ones a long day in the dark at both ends.
Mar – Apr
One of the two best windows: enough daylight for the long days and comfortable hours on the shore at Lake Bled.
May – Jun
Every length on this page works, including the pletna boat out to Bled Island in the late afternoon light.
Jul – Aug
The cave is the coolest hour of the day. These are the European holiday weeks, so the small-group listings capped at eight guests are worth booking well ahead.
Sep – Oct
Long enough days for the full itineraries and comfortable hours for the walking parts above ground.
Every trip, current fare
The two half days, the six-hour trips, the day with a boat tour and the long days that add Lake Bled or Piran, with what each includes and what it works out to per hour.
| Tour | Length | Price | What is included | Cost per hour | Rating |
|---|---|---|---|---|---|
| From Ljubljana: Postojna Cave & Predjama Castle Guided TripThe lowest fare on this site | 6 h | $74 | A guided cave visit and a historic castle tour | $12.33 | 4.6 · 212 |
| Ljubljana: Postojna Cave and Predjama Castle TourRated 4.9, private transfer | 5.5 h | $79 | Transfer for up to 8 with an English driver-guide | $14.36 | 4.9 · 490 |
| From Ljubljana: Postojna Cave, Predjama Castle, & Piran TourRated 4.9, max 8 guests | 10 h | $118 | Cave, castle and Piran on the Adriatic, max 8 guests | $11.80 | 4.9 · 459 |
| Postojna Cave & Predjama Castle half-day – tickets includedHalf a day, rated 4.8 | 5.5 h | $121 | Stalactites and stalagmites, the cave castle, tickets in | $22.00 | 4.8 · 199 |
| From Ljubljana: Lake Bled, Postojna Cave and Predjama CastleSmall groups, up to 8 | 11 h | $127 | Bled, the cave and the castle, small groups up to 8 | $11.55 | 4.9 · 178 |
| Ljubljana: Postojna Cave & Predjama Castle Tickets and TourThe most-reviewed tour here | 6 h | $130 | Cave and castle tickets, and a guided tour of both | $21.67 | 4.8 · 2,846 |
| Ljubljana: Lake Bled, Postojna Cave, and Predjama Day TourThree sights, rated 4.9 | 10 h | $131 | A pletna boat, Bled Castle, the castle, and a train ride | $13.10 | 4.9 · 288 |
| From Ljubljana: Postojna Cave, Predjama Castle and Lake BledA group day of 11.5 hours | 11.5 h | $164 | The underground passages and Lake Bled, in a group | $14.26 | 4.7 · 228 |
| From Ljubljana: Lake Bled & Postojna Cave with Entry TicketsOur top pick on this site | 11.5 h | $192 | Lake Bled and the cave, with entry tickets included | $16.70 | 4.8 · 878 |
| Ljubljana: Postojna Cave, Predjama Castle & Boat TourFour reviews so far | 7 h | $228 | The cave, the castle and a boat tour in one day | $32.57 | 3.8 · 4 |
Working out whether to drive yourself instead? The distance page sets out the time the road takes in each direction.
See the distance→Book direct
Two half days, four six-hour trips, the day with a boat tour and the long days that add Lake Bled or the Adriatic coast. Every Postojna cave tour from Ljubljana on this site, from the lowest fare here to our top pick.
★ 4.6 · 212 reviews
★ 4.9 · 490 reviews
★ 4.9 · 459 reviews
★ 4.8 · 199 reviews
★ 4.9 · 178 reviews
★ 4.8 · 2,846 reviews
★ 4.9 · 288 reviews
★ 4.7 · 228 reviews
★ 4.8 · 878 reviews
★ 3.8 · 4 reviews
Common questions
Between five and a half and eleven and a half hours. The short versions cover the cave and Predjama Castle; the long ones add Lake Bled, Bled Island or Piran. About two hours of any of them is driving.
$74, a six-hour guided trip covering the cave and a historic castle tour, rated 4.6 from 212 reviews. It is the lowest fare on the whole site.
$130, with 2,846 reviews at 4.8 over six hours, tickets and a guided tour of both the cave and the castle included.
Two listings run five and a half hours: $79, a private transfer for up to eight with an English driver-guide and a 4.9 rating, and $121, with tickets included and a 4.8.
Yes, and six of the ten do. $192 is our pick at 11.5 hours, $131 adds a pletna boat to Bled Island and Bled Castle in ten hours, and $127 does three sights in small groups of up to eight over eleven.
The descriptions answer that in one phrase they keep repeating: tickets included. A guided booking bundles the entrance and the transport for the same day, which is the practical case for it. Whether that suits you depends on how you like to travel.
Free cancellation applies on every tour listed on this site, within the window stated on the listing page.
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