The average bus between Dún Laoghaire and Castleknock takes 1h 39m and the fastest bus takes 1h 2m. The bus runs at least 2 times per hour from Dún Laoghaire 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 Dún Laoghaire and Castleknock. The earliest departure is at 5:52 AM in the morning, and the last departure from Dún Laoghaire is at 11:47 PM which arrives into Castleknock at 6:54 AM. All services require a transfer, and take on average 1h 39m. The schedules shown below are for the next available departures.

1h 28m • 1 change

1h 21m • 1 change

1h 27m • 1 change

1h 35m • 1 change
Want to know about travelling from Dún Laoghaire 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 Dún Laoghaire to Castleknock. However, there are services departing from Dún Laoghaire station and arriving at Castleknock station via Shaw Street. The journey, including transfers, takes approximately 1h 39m.
Dún Laoghaire to Castleknock bus services, operated by Dublin Bus, depart from Dun Laoghaire SC station.
Dún Laoghaire to Castleknock bus services, operated by Dublin Bus, arrive at St Brigid's Church station.
The distance between Dún Laoghaire and Castleknock is 17.4 km. The road distance is 23 km.
You can take a bus from Dun Laoghaire SC to St Brigid's Church via Shaw Street in around 1h 41m.