Are there nonstop flights from Islamabad (ISB) to Seoul (ICN)?

No. The fastest connection is via Beijing, about 6h 40m of total flying time.

What is the fastest connection from Islamabad (ISB) to Seoul (ICN)?

via Beijing ≈ 6h 40m, via Beijing ≈ 6h 41m, via Ürümqi ≈ 6h 56m (estimated flying time, excluding layovers).

from 18,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Islamabad International Airport (ISB) to Incheon International Airport (ICN)・4,808 km

No nonstop flights. The fastest connection is via Beijing (PKX), about 6h 40m of flying time (layover not included).

With milesANA 18,500 miles+ (via PEK)JAL 37,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

11 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.