Korean SkyPass used to be a Chase Transfer Partner, though that relationship ended last year. One of the strengths of the program has been the ability to get a free stopover in Korea, but they are ending free stopovers on award tickets for travel on Korean Airlines metal effective for travel on July 1, 2020 or later. That means that if you speculatively transferred miles to Korean before the partnership ended, you’ve still got more than a year to book travel with a free stopover.
Effective for travel from July 1, 2020
Again, the good news here is that it isn’t taking effect for quite a while. You can currently book a stopover on each one-way journey when booking an award on Korean Airlines flights. You’ll still be able to do that for travel before July 1, 2020. To be clear, that’s not a ticketing deadline but rather a travel deadline — if you’re flying after that date (which of course is not yet bookable), you’re subject to the new rule.
After July 1, 2020, you’ll only be allowed up to 24 hours to transit. A stop of more than 24 hours will cause the award to price as two separate awards. For instance, if you fly from North America to Souteast Asia on Korean with a stop of more than 24 hours in Korea, you’ll pay separately for the flight from North American to Korea and then for the flight from Korea to Southeast Asia, which will cause awards to become more expensive.
You can read the very brief announcement here on the Korean website.
You can see the Korean Airlines award chart here.
H/T: Traveling for Miles