I have a business trip to SE Asia in a few months and I will be flying Korean Air out of Atlanta. My ticket is a codeshare flight with a DL flight #(DL 7xxx). Normally, for codeshare flights, we check in with the operating carrier. Hence, I presume I would check-in with Korean Air, right? Also, is the Korean Air check in counter at ATL in the same location as the DL check in counter or are they located somewhere else such as in another terminal?

Thanks.