Are there nonstop flights from Hohhot (HET) to Seoul (ICN)?

Yes. Eastar Jet fly this route. Flight time is about 2h 3m.

What is the fastest connection from Hohhot (HET) to Seoul (ICN)?

via Dalian ≈ 2h 32m, via Beijing ≈ 2h 33m, via Tianjin ≈ 2h 34m (estimated flying time, excluding layovers).

from 11,000 ANA miles, from 12,000 JAL miles (economy, one way, based on the published award charts).

Hohhot Baita International Airport (HET) to Incheon International Airport (ICN)・1,314 km

Nonstop flights available (1 airline). Flight time about 2h 3m. Nonstop return flights also operate.

With milesANA 11,000 miles+ (via PEK)JAL 12,000 miles+ (via YNT)Economy, one way, estimate. Tap a connection for miles by cabin.

22 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.