The average bus between Killarney and Castleknock takes 5h 28m and the fastest bus takes 5h 4m. The bus service runs several times per day from Killarney 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 every 3 hours between Killarney and Castleknock. The earliest departure is at 4:30 AM at night, and the last departure from Killarney is at 6:30 PM which arrives into Castleknock at 11:38 PM. All services require a transfer at Bachelors Walk and take an average of 5h 28m. The schedules shown below are for the next available departures.

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Want to know about travelling from Killarney 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 Killarney to Castleknock. However, there are services departing from Killarney station and arriving at Castleknock station via Bachelors Walk. The journey, including transfers, takes approximately 5h 28m.
Killarney to Castleknock bus services, operated by Dublin Coach, depart from Killarney Mission Road station.
Killarney to Castleknock bus services, operated by Dublin Coach, arrive at Bachelors Walk station.
The distance between Killarney and Castleknock is 257.1 km. The road distance is 318 km.
Dublin Coach operates a bus from Killarney Mission Road to Bachelors Walk every 4 hours. Tickets cost €22–35 and the journey takes 4h 30m.