Are there nonstop flights from Singapore (SIN) to Nanning (NNG)?

Yes. Scoot fly this route. Flight time is about 3h 20m.

What is the fastest connection from Singapore (SIN) to Nanning (NNG)?

via Phnom Penh ≈ 3h 51m, via Sanya ≈ 3h 54m, via Hanoi ≈ 3h 57m (estimated flying time, excluding layovers).

from 18,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Singapore Changi Airport (SIN) to Nanning Wuxu International Airport (NNG)・2,406 km

Nonstop flights available (1 airline). Flight time about 3h 20m. Nonstop return flights also operate.

With milesANA 18,000 miles+ (via HKG)JAL 23,000 miles+ (via KMG)Economy, one way, estimate. Tap a connection for miles by cabin.

34 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.