The average train between Dundalk and Castleknock takes 1h 34m and the fastest train takes 1h 18m. There is a train service every few hours from Dundalk to Castleknock. 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 hourly between Dundalk and Castleknock. The earliest departure is at 5:30 AM in the morning, and the last departure from Dundalk is at 10:16 PM which arrives into Castleknock at 11:47 PM. All services require a transfer, and take on average 1h 34m. The schedules shown below are for the next available departures.

1h 51m • 1 change

1h 51m • 1 change

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1h 51m • 1 change

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1h 54m • 1 change

1h 54m • 1 change

2h 24m • 1 change

1h 54m • 1 change

2h 1m • 1 change

1h 40m • 1 change

1h 55m • 1 change

1h 54m • 1 change

2h 1m • 1 change

1h 40m • 1 change

1h 55m • 1 change

1h 54m • 1 change

2h 1m • 1 change

1h 40m • 1 change

1h 55m • 1 change
Want to know about travelling from Dundalk to Castleknock? 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 Dundalk to Castleknock. However, there are services departing from Dundalk station and arriving at Castleknock station via Dublin Connolly. The journey, including transfers, takes approximately 1h 34m.
Dundalk to Castleknock train services, operated by Iarnród Éireann (Irish Rail), depart from Dundalk station.
Dundalk to Castleknock train services, operated by Iarnród Éireann (Irish Rail), arrive at Castleknock station.
The distance between Dundalk and Castleknock is 69.8 km. The road distance is 96 km.
You can take a train from Dundalk to Castleknock via Dublin Connolly in around 1h 37m.