Are there nonstop flights from Jakarta (CGK) to Kota Kinabalu (BKI)?

Yes. Indonesia AirAsia fly this route. Flight time is about 2h 30m.

What is the fastest connection from Jakarta (CGK) to Kota Kinabalu (BKI)?

via Bandar Seri Begawan ≈ 3h, via Kuching ≈ 3h 3m, via Singapore ≈ 3h 43m (estimated flying time, excluding layovers).

from 15,000 JAL miles (economy, one way, based on the published award charts).

Soekarno-Hatta International Airport (CGK) to Kota Kinabalu International Airport (BKI)・1,698 km

Nonstop flights available (1 airline). Flight time about 2h 30m. Nonstop return flights also operate.

With milesJAL 15,000 miles+ (via KUL)Economy, one way, estimate. Tap a connection for miles by cabin.

10 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.