Are there nonstop flights from Astana (NQZ) to Guangzhou (CAN)?

Yes. Air Astana fly this route. Flight time is about 6h 3m.

What is the fastest connection from Astana (NQZ) to Guangzhou (CAN)?

via Ürümqi ≈ 6h 32m, via Xi'an ≈ 6h 39m, via Almaty ≈ 6h 48m (estimated flying time, excluding layovers).

from 18,000 ANA miles (economy, one way, based on the published award charts).

Nursultan Nazarbayev International Airport (NQZ) to Guangzhou Baiyun International Airport (CAN)・4,712 km

Nonstop flights available (1 airline). Flight time about 6h 3m. Nonstop return flights also operate.

With milesANA 18,000 miles+ (via XIY)Economy, one way, estimate. Tap a connection for miles by cabin.

15 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.