Iarnród Éireann’s new timetable, which starts on Sunday 10 December, includes additional inter-city and commuter services.
The operator says the changes include extra inter-city train services between Dublin and Cork, Carlow, and Westport.
There are also additional trains in the commuter belt between Dublin and Portlaoise, Dublin and Drogheda, and Cork and Mallow.
Customers on all routes – including inter-city, DART and commuter – are advised to check times before travel, as there may be minor time changes affecting some services.
The new timetable has been approved by the National Transport Authority, and follows a public consultation in September 2023, in which over 1,650 customers participated.