Where can I take the bus returning to HKIA from Tianhe District, Guangzhou? Thanks

Where are you staying at exactly? Anyway, there are cross-border coaches from some hotels in Guangzhou to HKIA. You may find the coaches at local Garden Hotel, Dongfang Hotel, Rosedale Hotel and Guangzhou Hotel.

Thanks Chuck. I will staying at the Marriott Hotel in Tianhe.

Then I suggest you take a taxi from your hotel to Garden Hotel, near which you can find the coaches to HKIA. I remember buses for the journey are scheduled at 06:30, 07:30, 08:30, 10:00, 12:30, 13:30, 16:00, 18:00 and 18:30 (this one is only in servie on Sundays and special holidays).

Thanks again Chuck. -tony