Children aged from five years old up to nineteen years are entitled to purchase a child ticket or fare.

Children under the age of five years are entitled to travel for free any Iarnród Éireann services when accompanied by a fare paying adult provided children do not occupy seats required for other fare paying passengers.

Those who wish to book a seat on reservable trains for a child under five years of age, may do so only by selecting the "Free Travel Pass or Valid Ticket' option on the journey planner.