Dublin Airport is only 20 kilometers away. The airport is serviced by Dublin Bus routes (41, 41a, 41b, 41c) which will take you into the city centre where you can transfer onto a bus to Dún Laoghaire. There is also a private bus service, Aircoach, which run hourly coaches to all areas of Dún Laoghaire- Rathdown in comfort and speed.
Travel by DART (Dublin Area Rapid Transit) from Dublin to Dún Laoghaire. The journey offers spectacular views of Dublin Bay. With trains running every 5 minutes during rush hour periods and every 15 minutes during the day, it is definitely one of the most convenient ways to arrive.
Irish Rail is the national rail service and operates a regular service throughout the country including stops at Dún Laoghaire.
The DART also links up with Irish Rail and the Luas at Connolly Station.