Seen below, we found seats in main cabin (regular economy), departing Atlanta ATL on Saturday, May 5, returning from Santa Ana SNA on Tuesday, May 8. Other scattered dates are available, mostly in April and May.
This is a regular economy fare on American, so you'll be able to bring a normal sized carry-on bag plus one small personal item for this price.
Need a room in Santa Ana? Here's what's available for the above dates on Hotelwatchdog.