There's really nothing you can complain about when it comes to Southwest...well, almost nothing. I like Southwest for their cheap fares and being able to make sure you can get where you are going fairly quickly. They seem to keep adding destinations for the Pittsburgh area to travel to which is also a big plus.
Planes seem to be some of the cleanest out there, and I think that I have only ever been delayed once when flying this airline. So, like I said, not much you can complain about. But let me try.
My biggest gripe about this airline is that if you want to check in early you pay extra and that doesn't even guarantee that you get a stellar seat. And I feel as if you are playing roulette when boarding. You have no idea where you will be seated and when you do find a seat, will it be a good seat? Am I going to have a crying kid behind me, am I going to be seated next to an armrest hog, etc. Unless you are flying with a friend or family, good luck in that area.