Are there nonstop flights from Dunhuang (DNH) to Seoul (ICN)?

No. The fastest connection is via Beijing, about 4h 14m of total flying time.

What is the fastest connection from Dunhuang (DNH) to Seoul (ICN)?

via Beijing ≈ 4h 14m, via Beijing ≈ 4h 14m, via Xi'an ≈ 4h 33m (estimated flying time, excluding layovers).

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

Dunhuang Mogao International Airport (DNH) to Incheon International Airport (ICN)・2,743 km

No nonstop flights. The fastest connection is via Beijing (PKX), about 4h 14m of flying time (layover not included).

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

None.

15 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.