Are there nonstop flights from Busan (PUS) to Lanzhou (LHW)?

No. The fastest connection is via Qingdao, about 3h 41m of total flying time.

What is the fastest connection from Busan (PUS) to Lanzhou (LHW)?

via Qingdao ≈ 3h 41m, via Shijiazhuang ≈ 3h 43m, via Beijing ≈ 3h 51m (estimated flying time, excluding layovers).

from 11,000 ANA miles, from 15,000 JAL miles (economy, one way, based on the published award charts).

Gimhae International Airport (PUS) to Lanzhou Zhongchuan International Airport (LHW)・2,280 km

No nonstop flights. The fastest connection is via Qingdao (TAO), about 3h 41m of flying time (layover not included).

With milesANA 11,000 miles+ (via PEK)JAL 15,000 miles+ (via NKG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

14 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.