SW question

[gracelrm]

We always drive to WDW and are driving again in October, but our daughter needs to come a few days later than us due to her schedule. I've been watching flights on SW from Nashville - and they seem to vary from time to time when I look at the price. Today, they were higher than usual. So at 2 1/2 months out - should I expect that they will start to increase or should I hang on and see if they are lower in a few days.

As I mentioned, we always drive and are fairly inexperienced with airline prices so any advice would be appreciated.