Are there nonstop flights from Xining (XNN) to Phnom Penh (KTI)?

No. The fastest connection is via Kunming, about 4h 19m of total flying time.

What is the fastest connection from Xining (XNN) to Phnom Penh (KTI)?

via Kunming ≈ 4h 19m, via Chengdu ≈ 4h 20m, via Chongqing ≈ 4h 26m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 18,000 ANA miles (economy, one way, based on the published award charts).

Xining Caojiabao International Airport (XNN) to Techo International Airport (KTI)・2,813 km

No nonstop flights. The fastest connection is via Kunming (KMG), about 4h 19m of flying time (layover not included).

With milesJAL 15,000 miles+ (via KMG)ANA 18,000 miles+ (via SZX)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.