Originally Posted by
newyorkgeorge
But would not the next day mean a change fee and reprice.
No, as long as you're within 12 hours of the flight you're trying to change to. For example, if you're on the 11:45 PM departure from LAX-JFK, and you want to change to the 7 AM departure the next morning, you can start checking for E inventory as early as 7 PM that night, and call to snag it if it exists.