Along these same lines, I am taking the evening p.s. flight LAX-JFK, but have to check-out of my Santa Barbara hotel at noon. If I shuttle to LAX around noon, can I check my bag then (10 hours or so early)? It will be the same day with no baggage left overnight. I know that the supposed cutoff is 4 hours, but if it is same-day, would they let you do that at LAX for 10+ hours??