United will not change the outbound leg without re-faring the entire trip in addition to any change fee ($100). So, if you are on any type of discount ticket, you will most likely owe them a bunch of money. You can stand-by for a different flight on the same day, which I have done to catch an earlier flight, with no charge.

[This message has been edited by tods27 (edited 10-23-2003).]