Are there nonstop flights from Toronto (YYZ) to Guangzhou (CAN)?

Yes. China Southern Airlines fly this route. Flight time is about 15h 8m.

What is the fastest connection from Toronto (YYZ) to Guangzhou (CAN)?

via Beijing ≈ 15h 38m, via Shanghai ≈ 15h 51m, via Seoul ≈ 15h 51m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Toronto Pearson International Airport (YYZ) to Guangzhou Baiyun International Airport (CAN)・12,441 km

Nonstop flights available (1 airline). Flight time about 15h 8m. Nonstop return flights also operate.

With milesANA 30,000 miles+ (via PEK)JAL 45,000 miles+ (via PVG)Economy, one way, estimate. Tap a connection for miles by cabin.

33 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.