Dingle is at the end of the road in west Kerry, and reaching it is part of the experience. There is no train station and the only public transport is a few daily buses.
By car. The most flexible option. From Killarney it is about an hour and a half on the N72 and N86 via Castlemaine and Annascaul. From Tralee about an hour. From Cork around three hours via Killarney. From Dublin, allow at least five hours, longer in summer traffic.
By bus. Bus Éireann route 275 runs between Tralee and Dingle several times a day, with stops at Castlemaine and Annascaul. The route is scenic and slow. From Killarney you usually need to change at Tralee. Wild Atlantic Way coach tours stop in Dingle as a lunch break — useful for a day trip but not for getting around.
By air. Kerry Airport (KIR) at Farranfore, an hour and a quarter east, has flights from Dublin, Manchester, and London Luton. The wider regional alternative is Shannon (SNN), about two and a half hours by car.
By bike. The Dingle peninsula is part of the Wild Atlantic Way cycle route and is best approached by bike from Tralee via the Dingle Way path or by ferry from the Iveragh peninsula (Cromane to Annascaul). The roads are narrow and the hills are real.