The average train between Dublin and Killarney takes 4h 19m and the fastest train takes 3h 6m. The train service runs several times per day from Dublin to Killarney. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 4 hours between Dublin and Killarney. The earliest departure is at 7:00 AM in the morning, and the last departure from Dublin is at 9:00 PM which arrives into Killarney at 10:11 AM. All services require a transfer, and take on average 4h 19m. The schedules shown below are for the next available departures.

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3h 15m • 1 change

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3h 19m • 1 change
Want to know about travelling from Dublin to Killarney? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Dublin to Killarney. However, there are services departing from Dublin station and arriving at Killarney station via Mallow. The journey, including transfers, takes approximately 4h 19m.
Dublin to Killarney train services, operated by Iarnród Éireann (Irish Rail), depart from Dublin Heuston station.
Dublin to Killarney train services, operated by Iarnród Éireann (Irish Rail), arrive at Killarney station.
The distance between Dublin and Killarney is 261.1 km. The road distance is 297 km.
You can take a train from Dublin Heuston to Killarney via Mallow in around 3h 43m.