Transport for Ireland operates a bus from Dublin to Cleggan every 30 minutes. Tickets cost $21 - $25 and the journey takes 2 h 30 min. 2 other operators also service this route.
How to get from Dublin to Cleggan
From Heuston Train Station train to Galway Coach Station then bus to Olivers. 5 h 3 min 54€. From Dublin City South, Burgh Quay bus to Galway Coach Station then bus to Olivers. 5 h 15 min 30€. From Dublin drive to Cleggan. 3 h 26 min 39€.