Are there nonstop flights from Cincinnati / Covington (CVG) to Seoul (ICN)?

No. The fastest connection is via Chicago, about 13h 53m of total flying time.

What is the fastest connection from Cincinnati / Covington (CVG) to Seoul (ICN)?

via Chicago ≈ 13h 53m, via Minneapolis ≈ 13h 56m, via Detroit ≈ 13h 58m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Cincinnati Northern Kentucky International Airport (CVG) to Incheon International Airport (ICN)・10,931 km

No nonstop flights. The fastest connection is via Chicago (ORD), about 13h 53m of flying time (layover not included).

With milesANA 30,000 miles+ (via SFO)JAL 45,000 miles+ (via SEA)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

18 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.