Are there nonstop flights from Bangkok (BKK) to Changzhou (CZX)?

No. The fastest connection is via Nanning, about 4h 18m of total flying time.

What is the fastest connection from Bangkok (BKK) to Changzhou (CZX)?

via Nanning ≈ 4h 18m, via Changsha ≈ 4h 19m, via Vientiane ≈ 4h 20m (estimated flying time, excluding layovers).

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

Suvarnabhumi Airport (BKK) to Changzhou Benniu International Airport (CZX)・2,804 km

No nonstop flights. The fastest connection is via Nanning (NNG), about 4h 18m of flying time (layover not included).

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

None.

23 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.