How much does it cost to change your flight date with US Airways?

Hi. I have a flight on US Airways on the 22 but I want to move it to tomorrow night if possible. Is this expensive? How much does it cost? Is it difficult? How do I do it? Thanks.How much does it cost to change your flight date with US Airways?It all depends on the fare class of the ticket you bought and the penalties pertaining to that fare class, only US Airways can answer your question accurately. The best way and probably only way to do it is to give US Airways a call. Good luck.