Are there nonstop flights from Hanoi (HAN) to Johannesburg (JNB)?

No. The fastest connection is via Singapore, about 13h 48m of total flying time.

What is the fastest connection from Hanoi (HAN) to Johannesburg (JNB)?

via Singapore ≈ 13h 48m, via Addis Ababa ≈ 14h 20m, via Shenzhen ≈ 14h 33m (estimated flying time, excluding layovers).

from 36,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Noi Bai International Airport (HAN) to O.R. Tambo International Airport (JNB)・9,875 km

No nonstop flights. The fastest connection is via Singapore (SIN), about 13h 48m of flying time (layover not included).

With milesANA 36,000 miles+ (via SIN)JAL 45,000 miles+ (via HKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

15 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.