Letterkenny is a major bus hub for northwestern Ireland. The bus station is by the roundabout at the junction of Ramelton Rd and the Derry road.
Bus Éireann express bus 32 runs to Dublin (€16, four hours) six times daily (four on Sunday) via Omagh (€11, one hour) and Monaghan (€13, 1¾ hours).
Derry (€7, 35 minutes) to Galway (€15, 4¾ hours) bus 64 stops at Letterkenny three times daily (twice on Sunday) before continuing to Donegal (€8, 50 minutes),Bundoran (€12, 1½ hours), Sligo (€12, 2¼ hours) and Galway (€17, 3½ hours)
TheDerry–Cork express bus 53 connects Letterkenny and Donegal (45 minutes), and Sligo (€12, two hours). It runs three times daily (once on Sunday).
John McGinley buses run twice daily Sunday to Thursday (three times Friday, once on Saturday) from Annagry to Dublin (€15, 3¾ hours) through Letterkenny and Monaghan.
Lough Swilly Buses has regular services from Derry (€6.60, one hour) to Dungloe (€8, two hours), via Letterkenny and Dunfanaghy, as well as direct to Letterkenny.
Feda O'Donnell runs a bus from Crolly (€5, 1½ hours) to Galway (€16, four hours) twice daily via Letterkenny, Donegal, Bundoran and Sligo. Buses stop on the road outside the bus station.
McGeehan Coaches (954 6150) runs a service from Letterkenny to Glencolumbcille (€10, 2¼ hours) daily except Sunday.
Letterkenny is connected by bus to both Donegal and Derry Airports