Originally Posted by Morrissey
Historically, the "cheaper" Asia fares have come out around June or July for travel in October and beyond. You may be out of luck for September travel...
This has been my experience as well. I have gotten relatively cheap JFK-SIN fares for late August and early September travel (~700r/t), but most of the availability seems to come up for late September onwards. The fall is usually a good time to find cheap fares to Asia on UA.