I have been searching for ATL-SIN award in business for sometime in October on KE metal. Tried Wandr.me tool with different origin ORD/LAX/ATL to ICN but that only shows first class availability. DL.com does not show any availability? Flightstats shows 4 seats in D, not sure if that is business for award booking? Couple of questions here:

1. What are the airlines I can search for ATL-SIN?
2. Anyway of finding KE Business award availability online before calling in delta reps?

Thanks.