I'm sure this info is on here but it's a bit difficult to sift through all the threads. Feel free to post a link to any helpful information.

I am flying on AA from AZO to MCI on December 14th Flight 4025 (11:05am). Because of a meeting change I need to fly in December 13th 4025 (2:25pm).

I called AA to see what my options were and the first piece of information was what I expected. $150.00 change fee along with $62.00 in additional charges. My flight is booked through a company and cost $324.00. My girlfriend is also booked on this same round trip flight for the same rate but I used a couple vouchers I had and paid the difference. Before the phone call ended the agent told me that I also had the option to change flights the day of for $75.00 as long as it was 12 hours or less before takeoff. He said I could just call ahead or go to the airport and change as long as seats were available.

Can someone explain his second option in more detail? I will take this option as a last resort, but It seems really last second. Do a lot of people do this? Also, is there any other ways around the AA change fees? I read in another forum that it is possible to change flight dates as long as the times and locations the same..