Not to my knowledge. I've been at XJT almost 5 years and flying on CAL, XJT, and CHQ is almost seamless....we travel as SA3's (same as CAL employees) on all three and only pay the minimal fee we're subject to. I tried Commute Air some time ago, and ended up going with an ID90 through a different carrier. Same thing on COAIR, I have access to almost all carriers except a couple "connection" carriers.