The $9 fare club tends to offer a lot of last minute bookings for flights that aren't full. On many occasions, we have booked last minute flights for cheap prices. The key is flexibility, though. Take going to WDW for instance,; if you are willing to fly into Tampa instead of Orlando and planned on renting a car anyway, you may be able to work with those cheaper flights. Sometimes cheaper flights only work for one of the legs of the trip. When we are able to get both ways, that's a definite score. In addition, a lot of the flights are on slower Tuesdays and Wednesday's. At the very least, if you travel a few times a year with them, you'll save money on your bags if you take them. As an extra thought, you could sign up for the club for the free (60 days I believe) and at least watch their ads and how their metric for flight availability works during that time period. I'm sure there are a lot of naysayers, but we've been doing this Spirit gig for about 10 years and it seriously saves money while getting us the non-stop flights we desire.