Are there nonstop flights from Toronto (YYZ) to Changsha (CSX)?

No. The fastest connection is via Seoul, about 15h 22m of total flying time.

What is the fastest connection from Toronto (YYZ) to Changsha (CSX)?

via Seoul ≈ 15h 22m, via Shanghai ≈ 15h 29m, via Guangzhou ≈ 16h 16m (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 Changsha Huanghua International Airport (CSX)・11,917 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 15h 22m of flying time (layover not included).

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

None.

8 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.