Are there nonstop flights from Baoshan (TCZ) to Changsha (CSX)?

Yes. Kunming Airlines fly this route. Flight time is about 2h 16m.

What is the fastest connection from Baoshan (TCZ) to Changsha (CSX)?

via Kunming ≈ 2h 48m, via Chongqing ≈ 2h 55m, via Chengdu ≈ 3h 1m (estimated flying time, excluding layovers).

from 12,000 JAL miles (economy, one way, based on the published award charts).

Tengchong Tuofeng Airport (TCZ) to Changsha Huanghua International Airport (CSX)・1,508 km

Nonstop flights available (1 airline). Flight time about 2h 16m. Nonstop return flights also operate.

With milesJAL 12,000 miles+ (via KMG)Economy, one way, estimate. Tap a connection for miles by cabin.

6 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.