Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 20:45 and arrives at Port Moresby Jacksons International Airport at 05:30.
The flighttime is about 6h 45m. The distance travelled ("as the bird flies"): 4259 Km. So the average speed is roughly 631 Km.
There is an 2 hour time difference between Hong Kong and Port Moresby