Are there nonstop flights from Istanbul (SAW) to Johannesburg (JNB)?

No. The fastest connection is via Cairo, about 9h 48m of total flying time.

What is the fastest connection from Istanbul (SAW) to Johannesburg (JNB)?

via Cairo ≈ 9h 48m, via Doha ≈ 11h 31m, via Abu Dhabi ≈ 11h 55m (estimated flying time, excluding layovers).

from 37,000 JAL miles (economy, one way, based on the published award charts).

Istanbul Sabiha Gökçen International Airport (SAW) to O.R. Tambo International Airport (JNB)・7,455 km

No nonstop flights. The fastest connection is via Cairo (CAI), about 9h 48m of flying time (layover not included).

With milesJAL 37,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

11 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.