The average bus between Sligo and Castleknock takes 3h 53m and the fastest bus takes 3h 16m. The bus service runs several times per day from Sligo to Castleknock. 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 4 hours between Sligo and Castleknock. The earliest departure is at 1:00 AM at night, and the last departure from Sligo is at 6:15 PM which arrives into Castleknock at 9:37 PM. All services require a transfer, and take on average 3h 53m. The schedules shown below are for the next available departures.

4h 5m • 1 change

3h 39m • 1 change

3h 21m • 1 change

3h 41m • 1 change

5h 6m • 1 change

3h 16m • 1 change

3h 41m • 1 change

3h 45m • 1 change

5h 6m • 1 change

3h 16m • 1 change

3h 41m • 1 change

3h 45m • 1 change

5h 6m • 1 change

3h 16m • 1 change

3h 41m • 1 change

3h 45m • 1 change

5h 6m • 1 change

3h 16m • 1 change

3h 41m • 1 change

3h 45m • 1 change

5h 4m • 1 change

3h 38m • 1 change

3h 41m • 1 change

3h 26m • 1 change

7h 4m • 1 change

4h 5m • 1 change

3h 39m • 1 change

3h 21m • 1 change
Want to know about travelling from Sligo to Castleknock? 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 Sligo to Castleknock. However, there are services departing from Sligo station and arriving at Castleknock station via Liffey Valley SC. The journey, including transfers, takes approximately 3h 53m.
Sligo to Castleknock bus services, operated by Expressway (Bus Éireann), depart from Sligo Bus Station.
Sligo to Castleknock bus services, operated by Expressway (Bus Éireann), arrive at Liffey Valley SC station.
The distance between Sligo and Castleknock is 170.5 km. The road distance is 208 km.
Expressway (Bus Éireann) operates a bus from Sligo Bus Station to Liffey Valley SC every 4 hours. Tickets cost €24–35 and the journey takes 3h 14m.