Jersey's incoming ferry operator, DFDS, now says it hopes to announce its schedule on Monday 23 December.
The Danish ferry firm says it "understands the importance of timely and accurate information for islanders" and is still working on the schedules.
The company previously said its 2025 timetable would be published by the end of this week.
In a statement released on Friday night, the company said: "DFDS is still working on the schedules for Jersey, and expect to be able to provide more details on Monday.
"We understand the importance of timely and accurate information for islanders and we want to ensure that we create schedules that respond to the needs of the island."
DFDS' website now allows prospective passengers to register their interest in sailings to Jersey and be notified as soon as the schedule is finalised.

Nude Dunes available to rent as a shop or commercial unit
Neil MacRae returns to Jersey Cricket as Director
Soups and Santas raise £32k for Jersey charities
Guernsey's former Chief Minister resigns as deputy after admitting making indecent images of children
Alcohol licensing law overhaul to go to Jersey's States for approval
LibertyBus replaces 22 buses in its fleet
The Shelter Trust Soup Kitchen returns with 41 flavours
Hospital looking for dementia patients' family and carers opinions