Are there nonstop flights from Seoul (ICN) to San Juan (SJU)?

No. The fastest connection is via Montréal, about 17h 4m of total flying time.

What is the fastest connection from Seoul (ICN) to San Juan (SJU)?

via Montréal ≈ 17h 4m, via Boston ≈ 17h 5m, via New York ≈ 17h 5m (estimated flying time, excluding layovers).

from 47,000 JAL miles, from 61,000 ANA miles (economy, one way, based on the published award charts).

Incheon International Airport (ICN) to Luis Munoz Marin International Airport (SJU)・13,663 km

No nonstop flights. The fastest connection is via Montréal (YUL), about 17h 4m of flying time (layover not included).

With milesJAL 47,000 miles+ (via DFW)ANA 61,000 miles+ (via EWR)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

12 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.