a VirtualTourist member from Singapore
Are there any coach departures from Hong Kong Airport to Guangzhou New Baiyun Airport before 7 am? I wish to know the ways to connect to a domestic flight in Guangzhou at 12.05 pm from Hong Kong Airport. Or is Dragonair flight the only way to reach New Baiyun Airport in a short time?
According to the HKG airport authority web site, you are out of luck, first bus is at 7am, there is also a limo service which starts at 7am and may get you there faster than a bus, you might check their web site to see if it is possible.
Buses take around three and half hours and the ones direct to Baiyun start at 8. I think flying is your only way to achieve what you want.