The average bus between Castleknock and Carlow takes 2h 18m and the fastest bus takes 1h 40m. There is a bus service every few hours from Castleknock to Carlow. 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 hourly between Castleknock and Carlow. The earliest departure is at 6:17 AM in the morning, and the last departure from Castleknock is at 11:46 PM which arrives into Carlow at 7:10 AM. All services require a transfer at Arran Quay and take an average of 2h 18m. The schedules shown below are for the next available departures.


1h 53m • 2 changes


1h 59m • 2 changes


2h • 2 changes


1h 55m • 2 changes


2h 27m • 2 changes


1h 48m • 2 changes


1h 53m • 2 changes


1h 59m • 2 changes


1h 58m • 2 changes


1h 56m • 2 changes


1h 49m • 2 changes


2h 9m • 2 changes
Want to know about travelling from Castleknock to Carlow? 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 Carlow. However, there are services departing from Castleknock station and arriving at Carlow station via Arran Quay. The journey, including transfers, takes approximately 2h 18m.
Castleknock to Carlow bus services, operated by Dublin Bus, depart from Castleknock station.
Castleknock to Carlow bus services, operated by Dublin Bus, arrive at Carlow Bus Station.
The distance between Castleknock and Carlow is 70.1 km. The road distance is 95 km.
You can take a bus from Castleknock to Carlow Bus Station via Arran Quay, Usher's Quay, Parkgate Street, and Heuston Station in around 2h 17m.