Are there nonstop flights from Kota Kinabalu (BKI) to Beijing (PKX)?

Yes. AirAsia fly this route. Flight time is about 4h 54m.

What is the fastest connection from Kota Kinabalu (BKI) to Beijing (PKX)?

via Xiamen ≈ 5h 25m, via Shenzhen ≈ 5h 25m, via Hong Kong ≈ 5h 26m (estimated flying time, excluding layovers).

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

Kota Kinabalu International Airport (BKI) to Beijing Daxing International Airport (PKX)・3,733 km

Nonstop flights available (1 airline). Flight time about 4h 54m. Nonstop return flights also operate.

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

15 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.