My brother is a Pilot for ASA flying Delta Connection flights. I am listed as his Delta travel companion and have flown only only Delta flights. I understand travel companions are not eligible for ZED fares, correct? Are there any other airlines that I would be able to fly on? Do I have any privileges on Skywest flights not operated by Delta since my brother is with ASA? I guess I am trying to determine to limitations and boundries of my privileges. Thanks for the help! :D