Any update on this?
I've booked a WN flight for October for a wedding, and I am pretty sure the price will drop sometime between now and then. Would be great to know when this happens somehow.
Tripit works. But it's not worth the trouble for one random trip. Just follow it manually- maybe weekly. Southwest rarely introduces or matches fares for periods much shorter than that.
Also, smarter travel dot com is useful for having general awareness of the low fares in your market.