Are there nonstop flights from Sanya (SYX) to Ulaanbaatar (UBN)?

Yes. MIAT Mongolian Airlines, Hunnu Air fly this route. Flight time is about 4h 21m.

What is the fastest connection from Sanya (SYX) to Ulaanbaatar (UBN)?

via Ordos ≈ 4h 52m, via Hohhot ≈ 4h 58m, via Guangzhou ≈ 5h 4m (estimated flying time, excluding layovers).

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

Sanya Phoenix International Airport (SYX) to Ulaanbaatar Chinggis Khaan International Airport (UBN)・3,271 km

Nonstop flights available (2 airlines). Flight time about 4h 21m. Nonstop return flights also operate.

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

NEWStarting soon: Juneyao Air

16 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.