The average bus between Rathgar and Castleknock takes 1h 8m and the fastest bus takes 46 min. The bus runs at least 3 times per hour from Rathgar 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 20 minutes between Rathgar and Castleknock. The earliest departure is at 5:49 AM in the morning, and the last departure from Rathgar is at 11:01 PM which arrives into Castleknock at 11:55 PM. All services require a transfer at Camden Street Lower and take an average of 1h 8m. The schedules shown below are for the next available departures.

54 min • 1 change

54 min • 1 change

54 min • 1 change

54 min • 1 change

1h 1m • 1 change

58 min • 1 change

57 min • 1 change

1h • 1 change
Want to know about travelling from Rathgar 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 Rathgar to Castleknock. However, there are services departing from Rathgar station and arriving at Castleknock station via St Brigid's Church. The journey, including transfers, takes approximately 1h 8m.
Rathgar to Castleknock bus services, operated by Dublin Bus, depart from Leeson Street Lower station.
Rathgar to Castleknock bus services, operated by Dublin Bus, arrive at St Brigid's Church station.
The distance between Rathgar and Castleknock is 9 km. The road distance is 17 km.
Dublin Bus operates a bus from Leeson Street Lower to St Brigid's Church every 15 minutes. Tickets cost €3 and the journey takes 54 min.