If I fly a regional airline such as Comair or Mesa and buy my ticket through Delta or America West and fly the whole flight on Comair or Mesa or some other regional airline, what percentage of the ticket fare will the "main stream company" get of the fare even if I never fly on their aircraft. Just an approx. percentage, I know you can't be exact. Say a $200 ticket from Cincinnati to Austin on Comair aircraft, how much would Delta get of that ?