Flight Tan Son Nhat International Airport departs from Ho Chi Minh City Tan Son Nhat International Airport at 15:40 and arrives at Guangzhou Guangzhou Baiyun International Airport at 19:40.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 876 Km. So the average speed is roughly 292 Km.
There is an 1 hour time difference between Ho Chi Minh City and Guangzhou