The average bus between Rathfarnham and Castleknock takes 1h 13m and the fastest bus takes 51 min. The bus runs at least 2 times per hour from Rathfarnham 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 30 minutes between Rathfarnham and Castleknock. The earliest departure is at 5:56 AM in the morning, and the last departure from Rathfarnham is at 11:08 PM which arrives into Castleknock at 11:59 PM. All services require a transfer at Westmoreland Street and take an average of 1h 13m. The schedules shown below are for the next available departures.

58 min • 1 change

1h 8m • 1 change

1h 13m • 1 change

1h 2m • 1 change
Want to know about travelling from Rathfarnham 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 Rathfarnham to Castleknock. However, there are services departing from Rathfarnham station and arriving at Castleknock station via Westmoreland Street. The journey, including transfers, takes approximately 1h 13m.
Rathfarnham to Castleknock bus services, operated by Dublin Bus, depart from Rathfarnham station.
Rathfarnham to Castleknock bus services, operated by Dublin Bus, arrive at St Brigid's Church station.
The distance between Rathfarnham and Castleknock is 9.6 km. The road distance is 18 km.
You can take a bus from Rathfarnham to St Brigid's Church via Westmoreland Street and Aston Quay in around 1h 19m.