Originally Posted by
ijgordon
Fair point - it's 331 days per the Wiki, which would be through 5/29/19 as of today. That said, the CX and I think maybe BA programs can book earlier, 355 days it seems, so there's always a chance any initial allotment of seats have already been snatched up.
I checked the HKG-DPS leg, and found lots of economy and some business from mid May to the 28 or 29th.