Are there nonstop flights from Seoul (ICN) to Jiamusi (JMU)?

Yes. Jeju Air fly this route. Flight time is about 1h 47m.

What is the fastest connection from Seoul (ICN) to Jiamusi (JMU)?

via Harbin ≈ 2h 29m, via Shenyang ≈ 2h 34m, via Dalian ≈ 2h 52m (estimated flying time, excluding layovers).

from 11,000 ANA miles, from 15,000 JAL miles (economy, one way, based on the published award charts).

Incheon International Airport (ICN) to Jiamusi Songjiang International Airport (JMU)・1,093 km

Nonstop flights available (1 airline). Flight time about 1h 47m. Nonstop return flights also operate.

With milesANA 11,000 miles+ (via PEK)JAL 15,000 miles+ (via YNT)Economy, one way, estimate. Tap a connection for miles by cabin.

8 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.