Are there nonstop flights from Hanoi (HAN) to Nanchang (KHN)?

No. The fastest connection is via Nanning, about 2h 33m of total flying time.

What is the fastest connection from Hanoi (HAN) to Nanchang (KHN)?

via Nanning ≈ 2h 33m, via Guilin ≈ 2h 34m, via Changsha ≈ 2h 35m (estimated flying time, excluding layovers).

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

Noi Bai International Airport (HAN) to Nanchang Changbei International Airport (KHN)・1,324 km

No nonstop flights. The fastest connection is via Nanning (NNG), about 2h 33m of flying time (layover not included).

With milesJAL 15,000 miles+ (via KMG)ANA 18,000 miles+ (via SZX)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.