Are there nonstop flights from Jakarta (CGK) to Nanjing (NKG)?

Yes. Xiamen Airlines fly this route. Flight time is about 5h 41m.

What is the fastest connection from Jakarta (CGK) to Nanjing (NKG)?

via Hong Kong ≈ 6h 12m, via Shenzhen ≈ 6h 12m, via Guangzhou ≈ 6h 13m (estimated flying time, excluding layovers).

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

Soekarno-Hatta International Airport (CGK) to Nanjing Lukou International Airport (NKG)・4,405 km

Nonstop flights available (1 airline). Flight time about 5h 41m. Nonstop return flights also operate.

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

19 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.