In the past when using SW i don't believe i have ever saw were there was no flights available for any category/price prior to day of flight. I have been checking our flights daily making sure they have not dropped any. I noticed the past few days that there is nothing available to buy for most of the flights on our depature. Does that mean that all the flights are all booked or will they open up more a few days before? Also does anyone know how they determine who they bump if they have overbooked?