There are numerous ferries to Siquijor every day. However, you should make sure that you are at the pier early enough.
If your flight arrives late in Dumaguete, it is usually too late to take one of the ferries. You will then have to spend the night in Dumaguete.
The last ferry to Siquijor Pier leaves at 7:10 p.m. This information is not guaranteed.
Please find out about the current timetable. Transfers booked in advance can only be carried out according to the respective ferry departure times.

