Are there nonstop flights from Beijing (PKX) to Bandar Seri Begawan (BWN)?

Yes. Royal Brunei Airlines fly this route. Flight time is about 5h 1m.

What is the fastest connection from Beijing (PKX) to Bandar Seri Begawan (BWN)?

via Shenzhen ≈ 5h 32m, via Hong Kong ≈ 5h 33m, via Kota Kinabalu ≈ 5h 36m (estimated flying time, excluding layovers).

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

Beijing Daxing International Airport (PKX) to Brunei International Airport (BWN)・3,845 km

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

With milesANA 18,000 miles+ (via SZX)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.