You can always climb on the wheels and hide as a stowaway. It can't get any cheaper than this.
If you don't like uncomfortable, then Delta is your choice. If you are taller than 6', those budget airlines are brutal.
choo what is point A and point B in your trip.
choo what did you end up paying?
anything under $600 is a decent fare round-trip.
trust that there's only one stop in hartsfield-jackson.