The average bus between Longford and Castleknock takes 2h 1m and the fastest bus takes 1h 43m. The bus service runs several times per day from Longford 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 2 hours between Longford and Castleknock. The earliest departure is at 2:50 AM at night, and the last departure from Longford is at 7:52 PM which arrives into Castleknock at 9:35 PM. All services require a transfer, and take on average 2h 1m. The schedules shown below are for the next available departures.

1h 43m • 1 change

1h 46m • 1 change

2h 2m • 1 change

1h 47m • 1 change

3h 15m • 1 change

1h 43m • 1 change

1h 46m • 1 change

2h 2m • 1 change

3h 15m • 1 change

1h 43m • 1 change

1h 46m • 1 change

2h 2m • 1 change

3h 15m • 1 change

1h 43m • 1 change

1h 46m • 1 change

2h 2m • 1 change

3h 15m • 1 change

1h 43m • 1 change

1h 46m • 1 change

2h 2m • 1 change
Want to know about travelling from Longford 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 Longford to Castleknock. However, there are services departing from Longford station and arriving at Castleknock station via Liffey Valley SC. The journey, including transfers, takes approximately 2h 1m.
Longford to Castleknock bus services, operated by Expressway (Bus Éireann), depart from Longford Stn station.
Longford to Castleknock bus services, operated by Expressway (Bus Éireann), arrive at Liffey Valley SC station.
The distance between Longford and Castleknock is 102.6 km. The road distance is 115 km.
Expressway (Bus Éireann) operates a bus from Longford Stn to Liffey Valley SC every 2 hours. Tickets cost €17–24 and the journey takes 1h 36m.