Taking a train from Dublin to Killarney is an easy way to travel from the capital to the southwest while you are visting Ireland.
Rail services on this route run regularly from Dublin Heuston train station to Killarney station, usually via Mallow. They are run on InterCity trains by the national rail company, Irish Rail.
Trains from Dublin to Killarney depart once every two hours throughout the day. The journey time on direct services is 3 hours and 5 minutes, while the journey time on services that require connections in Mallow is 3 hours and 15 minutes.
The cost of a single ticket for a train from Dublin to Killarney can be as low as 49.99 in first class and 24.99 in standard class for adults if you book online well before travelling. There is also a 3 euro fee for processing and credit cards. Cheaper train tickets are available for youths and holders of farecards.