The average bus between Arklow and Castleknock takes 2h and the fastest bus takes 1h 32m. There is an hourly bus service from Arklow 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.
Buses run hourly between Arklow and Castleknock. The earliest departure is at 3:07 AM at night, and the last departure from Arklow is at 9:45 PM which arrives into Castleknock at 11:33 PM. All services require a transfer at Clare Street and take an average of 2h. The schedules shown below are for the next available departures.

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2h 10m • 1 change
1h 45m • 1 change
1h 47m • 1 changeWant to know about travelling from Arklow 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 bus from Arklow to Castleknock. However, there are services departing from Ferrybank station and arriving at Morgan Place station via Clare Street station. The journey, including transfers, takes approximately 2h.
Arklow to Castleknock bus services, operated by Expressway (Bus Éireann), depart from Ferrybank station.
Arklow to Castleknock bus services, operated by Dublin Bus, arrive at Morgan Place station.
The distance between Arklow and Castleknock is 65.4 km. The road distance is 78 km.
You can take a bus from Ferrybank to Morgan Place via Clare Street and National Gallery in around 1h 49m.