Are there nonstop flights from Portland (PWM) to Seoul (ICN)?

No. The fastest connection is via New York, about 14h 34m of total flying time.

What is the fastest connection from Portland (PWM) to Seoul (ICN)?

via New York ≈ 14h 34m, via Newark ≈ 14h 34m, via Detroit ≈ 14h 48m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Portland International Jetport (PWM) to Incheon International Airport (ICN)・10,838 km

No nonstop flights. The fastest connection is via New York (JFK), about 14h 34m of flying time (layover not included).

With milesANA 30,000 miles+ (via EWR)JAL 47,000 miles+ (via DFW)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.