Translink is advising passengers that a special timetable will operate over the Christmas and New Year period, starting on Monday December 24 and continuing until January 1 inclusive.
No Ulsterbus, Metro, Goldline, Airport Express, NI Railways or Enterprise services will operate on Christmas Day.
There will be some limited Goldline, Ulsterbus and Metro services on Boxing Day.
Holiday timetables will apply on many services between December 27 and January 2.
Translink NI Railways will be introducing a new enhanced timetable from January 7, offering more frequent services between Belfast and Whitehead and Belfast and Coleraine.
Full details of holiday timetables, special offers for the festive season and new timetables are available on-line at www.translink.co.uk or use the online journey planner. Passengers can call the contact centre on 02890 666630.