The average bus between Castleknock and Belfast takes 3h 25m and the fastest bus takes 3h. There is a bus service every few hours from Castleknock to Belfast. 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 Belfast. The earliest departure is at 7:54 AM in the morning, and the last departure from Castleknock is at 11:06 PM which arrives into Belfast at 3:20 AM. All services require a transfer, and take on average 3h 25m. The schedules shown below are for the next available departures.

3h 21m • 1 change

3h 9m • 1 change

3h 34m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 9m • 1 change

3h 34m • 1 change

3h 24m • 1 change

3h 21m • 1 change

3h 9m • 1 change

3h 34m • 1 change

3h 24m • 1 change

3h 26m • 1 change

3h 22m • 1 change

3h 22m • 1 change

3h 19m • 1 change
Want to know about travelling from Castleknock to Belfast? 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 Belfast. However, there are services departing from Castleknock station and arriving at Belfast station via Europa Bus Centre. The journey, including transfers, takes approximately 3h 25m.
Castleknock to Belfast bus services, operated by Dublin Bus, depart from The Gresham Hotel station.
Castleknock to Belfast bus services, operated by Dublin Bus, arrive at Europa Bus Centre station.
The distance between Castleknock and Belfast is 139.1 km. The road distance is 177 km.
Aircoach operates a bus from The Gresham Hotel to Europa Bus Centre hourly. Tickets cost £13–19 and the journey takes 2h 30m.