I was talking to a senior F/A at Mesa. She loved the schedules because they see Canada and Mexico and all of the Western U.S. I talked to her on the last day of her 3 day trip. That last day, they were doing SAN-Los Cabos-SAN-PHX. It sounds like they do about 5 hours of flying a day. Keep in mind they use the CRJ900 meaning they fly routes 2 hours and up.