I mean... which specific LAX -> SJC flight did you have in mind?
Flight 3027[1] does LAX -> SJC, but first it does TPA (Tampa) -> STL (St Louis), and STL -> LAX.
There may be some back and forth flights, but if that plane goes back to LAX right away, it's probably flight 2497 [2], which goes to BWI (Baltimore) after LAX.
If that plane can't leave Florida in the morning, there goes your noon flight to SJC, and your early afternoon flight to LAX. Plus, the plane may not have made it to Baltimore and the schedule is messed up the next day too.
Flight 3027[1] does LAX -> SJC, but first it does TPA (Tampa) -> STL (St Louis), and STL -> LAX.
There may be some back and forth flights, but if that plane goes back to LAX right away, it's probably flight 2497 [2], which goes to BWI (Baltimore) after LAX.
If that plane can't leave Florida in the morning, there goes your noon flight to SJC, and your early afternoon flight to LAX. Plus, the plane may not have made it to Baltimore and the schedule is messed up the next day too.
[1] https://www.southwest.com/air/flight-status/path.html?depart...
[2] https://www.southwest.com/air/flight-status/path.html?depart...