The average bus between Dublin Port and Castlebar takes 3h 51m and the fastest bus takes 3h 43m. The bus service runs several times per day from Dublin Port to Castlebar. 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 Dublin Port and Castlebar. The earliest departure is at 6:53 AM in the morning, and the last departure from Dublin Port is at 11:44 PM which arrives into Castlebar at 3:45 AM. All services require a transfer at Burgh Quay and take an average of 3h 51m. The schedules shown below are for the next available departures.

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Want to know about travelling from Dublin Port to Castlebar? 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 Dublin Port to Castlebar. However, there are services departing from Dublin Port station and arriving at Castlebar station via Castlebar. The journey, including transfers, takes approximately 3h 51m.
Dublin Port to Castlebar bus services, operated by Dublin Bus, depart from Crampton Quay station.
Dublin Port to Castlebar bus services, operated by Dublin Bus, arrive at Castlebar station.
The distance between Dublin Port and Castlebar is 211 km. The road distance is 246 km.
Citylink operates a bus from Crampton Quay to Castlebar every 4 hours. Tickets cost €21–30 and the journey takes 3h 30m.