Where are you planning to go to? It's a difficult time of the year to find cheap airfares to Ireland, as July / Aug are by far the most popular for tourists. The best option at the moment seems to be either direct with EI/AA from LAX to DUB, or with CO via EWR. Either way, the fare will be about $800 - 900.
If you let me know what part of Ireland you're hoping to stay in, I can make some suggestions for hotels...
star_world