There are a few left over Sweetspots after the Alaska Mileage Club revamped the awards (https://awardcracker.com/new-alaska-mileage-plan-sweetspots/) and Korean Air is one of them. I was looking through the premium cabin award space in early 2025 for a friend and found two business class seats on nonstop Korean Air flights from several US cities to Seoul (see the image below from Seats.aero).
Korean Air Boeing 777-300ER Business Class
Award Booking Hotels in Seoul
Hyatt
Hilton
IHG
Flights from Seoul to neighboring Asian countries
It is easy to fly from Seoul (ICN) airport to several major cities in Asia using the free one-way stopover feature of Alaska miles.
Conclusion
Korean Air has a wonderful business class soft product and Alaska miles can be used to maximize visits to more than one Asian destination with a free stopover program.