Originally Posted by
aviators99
Make sure you cancel *before* the flight boards!. Even refundable tickets may not be refundable if you are a no-show! This can be tricky, since if you are *too* early for a flight, TSA can give you a hard time for that!
Of course, cancellation can be made right after the BP is printed, whether it's printed at home, or at an AP kiosk. Despite the magic flashlights and the advanced magnification tools, the knights/officers, of course, know not the difference.