I'm assuming you're talking about SW airlines and their Wanna Get Away fare level? Sometimes they do, sometimes they don't. It largely depends on how well the flight is selling. If the flight is looking like it may sell out, then there is no reason to offer lower fare levels. If it starts lagging and Revenue Management things it might go out with too many empty seats, they will open lower fare levels. If the flight you're looking at is in the next couple months, probably not going to go any lower. If it's at the end of the current release, it very well may.