I remember getting a couple of years back a Finnair bus class to HKG, it was via helsiki. turnaround was less than 1 hour.
price was around 1600 + tax. BA was close to 4000. funny thig was that it was a BA flight to helsinki!
btw i just flew jetstar from Changi to HK, they are Aus easyjet, even down to the color of the uniforms! as a budget airline the product was good, seats dont recline but are nice and soft.