We used TACA from LAX last week and they were excellent. You can fly Southwest to Lax, though you can not make connection to SAC same day on the way back. If your flexible, you might try hotwire.com for the lax-bze portion. While you don't officially know what time you will fly when you buy the ticket, the chances are overwhelming it will be the TACA red eye that puts you in BZE at 9:50am. Good luck!