They had one for Black Friday, i went to book but missed out on the low prices to the U.S. for next September, i checked a few days later on November 28th, and what i was looking for had dropped back to the Black Friday sale prices, so i booked, Dublin to NYC outward, Chicago to Dublin return, €499 incl a 23kg bag, a good price.
But they do have sales every few months so hang tight, allthough August, is always a peak travel time for flights, so never gets that cheap for August.