Originally Posted by
Repooc17
Pretty sure the OP is referring to Korean Airline in the sense of an airline from Korea. The OP had also referred to American Airline, and last I had checked, AA does not serve SPN either.
The OP is likely referring to OZ - Asiana Airline.
Well, the OP could avoid the cabotage issue completely if he flew one Korean airline from the Mainland U.S. to Korea, and a different Korean airline from Korea to Saipan.
As Asiana has previously been the subject of a U.S. cabotage enforcement action, the OP might want to speak with Asiana directly, if Asiana is, in fact, the carrier on both tickets.