Are there nonstop flights from Seoul (ICN) to Ürümqi (URC)?

Yes. China Southern Airlines fly this route. Flight time is about 4h 25m.

What is the fastest connection from Seoul (ICN) to Ürümqi (URC)?

via Dalian ≈ 4h 55m, via Beijing ≈ 4h 56m, via Hohhot ≈ 4h 56m (estimated flying time, excluding layovers).

from 11,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Incheon International Airport (ICN) to Ürümqi Tianshan International Airport (URC)・3,331 km

Nonstop flights available (1 airline). Flight time about 4h 25m. Nonstop return flights also operate.

With milesANA 11,000 miles+ (via PEK)JAL 23,000 miles+ (via PKX)Economy, one way, estimate. Tap a connection for miles by cabin.

42 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.