Are there nonstop flights from Hailey (SUN) to Seoul (ICN)?

No. The fastest connection is via Seattle, about 11h 45m of total flying time.

What is the fastest connection from Hailey (SUN) to Seoul (ICN)?

via Seattle ≈ 11h 45m, via Salt Lake City ≈ 12h 34m, via San Francisco ≈ 12h 48m (estimated flying time, excluding layovers).

from 37,000 JAL miles (economy, one way, based on the published award charts).

Friedman Memorial Airport (SUN) to Incheon International Airport (ICN)・9,129 km

No nonstop flights. The fastest connection is via Seattle (SEA), about 11h 45m of flying time (layover not included).

With milesJAL 37,000 miles+ (via SEA)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

5 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.