Mark,
KLM.ie will give you prices for flights into ORK and DUB, if this is any good to you. These will be via AMS with KL/NW. Alternatively ba.com will also give prices directly into ireland, as will aa.com. AC also fly directly into DUB, and offer some really good fares. US are not bad either. There are lots of good fares out there, and lots of airline options, as long as you are not too determined to fly into one specific airport.
Brian.