Are there nonstop flights from Phuket (HKT) to Changsha (CSX)?

No. The fastest connection is via Hanoi, about 4h 13m of total flying time.

What is the fastest connection from Phuket (HKT) to Changsha (CSX)?

via Hanoi ≈ 4h 13m, via Bangkok ≈ 4h 14m, via Bangkok ≈ 4h 14m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 18,000 ANA miles (economy, one way, based on the published award charts).

Phuket International Airport (HKT) to Changsha Huanghua International Airport (CSX)・2,725 km

No nonstop flights. The fastest connection is via Hanoi (HAN), about 4h 13m of flying time (layover not included).

With milesJAL 15,000 miles+ (via HKG)ANA 18,000 miles+ (via BKK)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

18 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.