The average bus between Castleknock and Dún Laoghaire takes 1h 27m and the fastest bus takes 1h. The bus runs at least 3 times per hour from Castleknock to Dún Laoghaire. 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 Castleknock and Dún Laoghaire. The earliest departure is at 5:57 AM in the morning, and the last departure from Castleknock is at 11:07 PM which arrives into Dún Laoghaire at 12:09 AM. All services require a transfer, and take on average 1h 27m. The schedules shown below are for the next available departures.

1h 21m • 1 change

1h 18m • 1 change

1h 16m • 1 change

1h 18m • 1 change
Want to know about travelling from Castleknock to Dún Laoghaire? 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 Castleknock to Dún Laoghaire. However, there are services departing from Castleknock station and arriving at Dún Laoghaire station via Nassau Street. The journey, including transfers, takes approximately 1h 27m.
Castleknock to Dún Laoghaire bus services, operated by Dublin Bus, depart from Castleknock station.
Castleknock to Dún Laoghaire bus services, operated by Dublin Bus, arrive at Dun Laoghaire SC station.
The distance between Castleknock and Dún Laoghaire is 17.4 km. The road distance is 23 km.
You can take a bus from Castleknock to Dun Laoghaire SC via Nassau Street in around 1h 30m.