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.

Two Jersey charity leaders become MBEs in King's Birthday Honours
Election voter turnout revealed
States members sworn in as Chief Minister discusses Ministerial options
Man (36) found guilty of child sexual abuse
Healthcare campaigners make a stand as new States is sworn in
Jersey students heading to university to receive Meningitis B vaccine
Farnham to remain Chief Minister
Hole in road causes gridlock in St Helier