This Intercity Expressway network has over 50 routes serving cities and towns across Ireland - and Northern Ireland in conjunction with Ulsterbus. Buses to Galway (€14), Limerick (€12.50) and Belfast (€14) leave every hour and buses to Derry (€19.50), Cork (€10.50) and Co. Donegal's Letterkenny (€17.50) every two hours. The Belfast jouney runs via Dublin Airport every hour from 05:00 - 21:00 inclusive and every 2hrs from 23:00 - 05:00. (€6). Prices quotes are adult single and subject to change. Tickets do not need to be pre-booked. If you're planning on doing a lot of travelling, especially in a short time period, check the website for various money-saving bus and rail Tourist Travel Passes. Eurolines tickets are also available for travel in 25 European countries, including GB.