Are there nonstop flights from Seoul (ICN) to Boise (BOI)?

No. The fastest connection is via Seattle, about 11h 36m of total flying time.

What is the fastest connection from Seoul (ICN) to Boise (BOI)?

via Seattle ≈ 11h 36m, via San Francisco ≈ 12h 40m, via Salt Lake City ≈ 12h 42m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Incheon International Airport (ICN) to Boise Air Terminal/Gowen Field (BOI)・9,014 km

No nonstop flights. The fastest connection is via Seattle (SEA), about 11h 36m of flying time (layover not included).

With milesANA 30,000 miles+ (via SFO)JAL 37,000 miles+ (via SEA)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

9 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.