Have been trying to find a return schedule from a few East Coast gateways (JFK/YYZ) to Korea and beyond in J (105k return cost...). Although there is ample availability for the intra-Asia flights in J, the main leg NA-Korea has tons of Y availability yet none in J. Dates NOV-DEC 2023.

Anything I am missing re KE release of J seats for AS Mileage Plan members? Is it possible at all all those seats are taken already (even searched for the latest possible date to book, to no avail)

Would appreciate any insight.