The average bus between Castleknock and Harold's Cross takes 1h and the fastest bus takes 44 min. The bus runs at least 3 times per hour from Castleknock to Harold's Cross. 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 Harold's Cross. The earliest departure is at 5:57 AM in the morning, and the last departure from Castleknock is at 10:50 PM which arrives into Harold's Cross at 12:12 AM. All services require a transfer, and take on average 1h. The schedules shown below are for the next available departures.

52 min • 1 change

58 min • 1 change

1h 6m • 1 change

1h 3m • 1 change
Want to know about travelling from Castleknock to Harold's Cross? 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 Harold's Cross. However, there are services departing from Castleknock station and arriving at Harold's Cross station via Kildare Street. The journey, including transfers, takes approximately 1h.
Castleknock to Harold's Cross bus services, operated by Dublin Bus, depart from Castleknock station.
Castleknock to Harold's Cross bus services, operated by Dublin Bus, arrive at Mt Drummond Ave station.
The distance between Castleknock and Harold's Cross is 7.6 km. The road distance is 16 km.
You can take a bus from Castleknock to Mt Drummond Ave via Kildare Street in around 1h 2m.