Steam train runs May 1 - October 21, 2018. Until June 2 only up to Planalp (not the peak). The steam train departs up to 8 times between 08:36 and 16:36.
Return tickets steam train only 92/46Sfr. Up to two kids per adult travel for free, otherwise 10Sfr. Tickets for a round trip with return journey from Brienz across Brünig to Lucerne are available at the Tourist Information in Lucerne.