The average bus between Castleknock and Dundalk takes 2h 29m and the fastest bus takes 1h 47m. There is a bus service every few hours from Castleknock to Dundalk. 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 Dundalk. The earliest departure is at 6:39 AM in the morning, and the last departure from Castleknock is at 11:47 PM which arrives into Dundalk at 8:00 AM. All services require a transfer at Parnell Square East and take an average of 2h 29m. The schedules shown below are for the next available departures.

2h 5m • 1 change

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2h 10m • 1 change

2h 6m • 1 change

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Want to know about travelling from Castleknock to Dundalk? 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 Dundalk. However, there are services departing from Castleknock station and arriving at Dundalk station via Parnell Square East. The journey, including transfers, takes approximately 2h 29m.
Castleknock to Dundalk bus services, operated by Dublin Bus, depart from Castleknock station.
Castleknock to Dundalk bus services, operated by Dublin Bus, arrive at Marshes Shop Cntr station.
The distance between Castleknock and Dundalk is 69.8 km. The road distance is 91 km.
You can take a bus from Castleknock to Marshes Shop Cntr via Parnell Square East and Cumberland Street N in around 2h 16m.