Are there nonstop flights from Jakarta (CGK) to Lanzhou (LHW)?

No. The fastest connection is via Chengdu, about 6h 36m of total flying time.

What is the fastest connection from Jakarta (CGK) to Lanzhou (LHW)?

via Chengdu ≈ 6h 36m, via Kunming ≈ 6h 37m, via Singapore ≈ 6h 38m (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 Lanzhou Zhongchuan International Airport (LHW)・4,752 km

No nonstop flights. The fastest connection is via Chengdu (TFU), about 6h 36m of flying time (layover not included).

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

None.

20 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.