if you look up on the map where the Cliffs are located, you will see that they are at the west coast of Ireland and far far away from Dublin. We bought a ticket for a bustrip from Dublin to the Cliffs because I heard that it's beautiful over there. We spent 7 hours in a bus and 3 hours on the Cliffs but it was totally worth the drive! I loved it there, and in between all the buildings in Dublin some nature was very welcome (my boyfriend is a huge fan of nature so he was happy as well :D) and we had a great time! The view is amazing and we were lucky that there wasn't any rain (because it rains every day in Ireland, but not necessarily on the same place)
enjoy your weekend!