We offer Seychelles ferry tickets for all the ferry companies between Mahé, Praslin and La Digue.
So here is the schedule for the Cat Cocos ferries which ply between all 3 islands. They have few connections that go all the way to La Digue though.
As an alternative, you can book Mahé – Praslin with Cat Cocos and then Praslin – La Digue with Cat Rose (their schedule is found below).
This gives you more connections and more options if you wish to go from Mahé to La Digue (or from La Digue back to Mahé).
This is the schedule for the Cat Rose ferries which ply between Praslin and La Digue only.
They have lots of connections between those beautiful Seychelles islands: