The average bus between Rathgar and Castleknock takes 1h 23m and the fastest bus takes 52 min. The bus runs at least 2 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 30 minutes between Rathgar and Castleknock. The earliest departure is at 6:39 AM in the morning, and the last departure from Rathgar is at 11:41 PM which arrives into Castleknock at 6:54 AM. All services require a transfer at Lombard Street East and take an average of 1h 23m. The schedules shown below are for the next available departures.

1h 1m • 1 change

1h 7m • 1 change

1h 7m • 1 change

1h 18m • 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 Lombard Street East. The journey, including transfers, takes approximately 1h 23m.
Rathgar to Castleknock bus services, operated by Dublin Bus, depart from Rathgar West 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.
You can take a bus from Rathgar West to St Brigid's Church via Lombard Street East and Shaw Street in around 1h 23m.