Hello, landlord.
Guangzhou South Railway Station is located in Panyu District of Guangzhou, and New Baiyun Airport is located in Huadu District of Guangzhou. I think it&;s faster. Because Guangzhou South Railway Station and the airport are connected by subway!
Take Metro Line 2 from Guangzhou South Railway Station and sit at Jiahe Wanggang Station, then transfer to the north extension of Metro Line 3 heading for the airport at Jiahe Wanggang Station and sit at the airport.
The whole journey will take about 68 minutes, pass through 27 stops and cost 9 yuan money.
This subway, it&;s faster.
Also, I don&;t recommend taking a taxi very much, because the time and road conditions on the road are difficult to predict. If you take a taxi by the meter, the cost is not cheap. If you bargain, you may be cheated if you are unfamiliar.
I hope the above answers are helpful to you. Thank you.