When I heard that there was a new Whataburger open at ABIA I just assumed that it would be in the terminal with Taco Deli, Saxon Pub and Jo's Coffee. It isn't.
It's located in the cell phone lot at 2901 Spirit of Texas Drive. Whataburger says that this location is "specifically designed to greet travelers coming and going."
So the next time your plan lands at ABIA, you can get your Double Meat with Cheese before even leaving the airport grounds. That's a pretty good homecoming celebration.