Fixed departures
Dates are published in advance and run whether or not the boat fills, subject to a minimum.

Day & Short Trips
A fixed departure with other travellers. The cheapest legitimate route onto the island, and the format most solo travellers and couples end up booking.
Find a DepartureHow It Works
The operator sets the route and the departure; you buy a seat or a cabin on it.
Dates are published in advance and run whether or not the boat fills, subject to a minimum.
Day boats commonly carry a dozen or more; liveaboard open trips are limited by cabin count.
Stops are decided by the operator. You cannot move the schedule to suit your light or your lie-in.
From around USD 90 per person for a day trip. Park and ranger fees are usually separate.
Cost, one or two people
Cost, four or five
Departure time
Ranger group
The break-even is around four people. Below it, an open trip is clearly cheaper; above it, the gap closes fast.
Komodo Luxury publish open-trip dates and will tell you which ones still have space at the hour worth leaving.