The average bus between Donegal and Castlebar takes 4h and the fastest bus takes 2h 50m. The bus service runs several times per day from Donegal 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 4 times a day between Donegal and Castlebar. The earliest departure is at 8:40 AM in the morning, and the last departure from Donegal is at 8:15 PM which arrives into Castlebar at 12:00 AM. All services require a transfer, and take on average 4h. The schedules shown below are for the next available departures.

3h 34m • 1 change

3h 33m • 1 change

5h 13m • 1 change

3h 50m • 1 change

3h 34m • 1 change

5h 13m • 1 change

3h 50m • 1 change

3h 45m • 1 change

3h 34m • 1 change

3h 33m • 1 change

5h 8m • 1 change

3h 50m • 1 change

3h 27m • 1 change

5h 13m • 1 change

3h 50m • 1 change

3h 45m • 1 change

3h 26m • 1 change

5h 13m • 1 change

2h 50m • 1 change
Arrives next day

3h 45m • 1 change

3h 34m • 1 change

3h 33m • 1 change

5h 13m • 1 change

3h 50m • 1 change
Want to know about travelling from Donegal 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 Donegal to Castlebar. However, there are services departing from Donegal station and arriving at Castlebar station via Claremorris. The journey, including transfers, takes approximately 4h.
Donegal to Castlebar bus services, operated by Expressway (Bus Éireann), depart from Donegal station.
Donegal to Castlebar bus services, operated by Expressway (Bus Éireann), arrive at Claremorris station.
The distance between Donegal and Castlebar is 117.5 km. The road distance is 173 km.
Expressway (Bus Éireann) operates a bus from Donegal to Claremorris 3 times a day. Tickets cost €20–28 and the journey takes 2h 38m. Bus Feda Teoranta also services this route twice daily.