Originally Posted by
rjw242
Or buy tickets on another carrier operating out of the same (or an airside-connected) terminal.
In many cases you can get into any terminal of the same airport you are scheduled to fly out of, regardless if the terminal is used by the airline.
Either way, works best with a carrier you don't ever see yourself having a FF account for so there's nothing they can do to you. I don't believe the can ban you from flying, only from participating in their frequent flyer program