Fares have now gone up to Eur 1.90. Or else get a ticket for Eur 1.70 from the transport information desk in the airport arrivals hall. Valid for travel for 90 minutes from time of first validation. Another handy bus route serving the airport is the 746 service to/from Dun Laoghaire. There are other routes listed on the Dublin Bus website, but they only operate once or twice per day. You can also get a Eur 6.00 adult day ticket which can be used on all Dublin Bus services including the Airlink (747 & 748) services which usually cost Eur 6.00 one-way. If you're going anywhere served by the Luas (www.luas.ie), the best value ticket is a combined Adult One Day/Luas ticket for Eur 6.50.