Get 'em while they last! This evening i found flights from San Francisco to Dublin for only $465 roundtrip! The flights I found (on Kayak) are on American Airlines departing November 11th and returning the 18th.
Trusted Travel Girl Bonus Tip: Book them ASAP before they are unavailable. Also, search for nearby dates incase these are already sold out. Since these flights are on American, you can hold them for 24 hours! This way you can book/hold them now and still have a full day to figure out the other details to make sure you can take the time off of work or school.