When you are saying "on line", what site? I'm assuming Korean Air's site, but wasn't sure.

On www.delta.com I can see flights MCO/BKK with legs on Korean Air. I didn't try the various OTAs, but suspect Korean Air would also show up on them.

At least on Delta, I've sometimes found required mileage to be the same from a connecting city and from a gateway city.

You also can request a moderator to move your post to another forum, but SK AAR may have already taken care of that for you.

And welcome to FlyerTalk!