Window or aisle? American Air app makes it easier to slide into your preferred seat

The app can now place flyers in their preferred seat once it opens up, free of charge. But there is a catch (or three). American Airlines just debuted a new feature on its app that makes it easier to snag your preferred seat (window, aisle, or even middle) — but there is no shortage of caveats. The new feature allows flyers to select their seat characteristics after booking, so they don’t have …