Keep checking and watching. You can use a price comparison website like kayak.com for most airlines, then check Jetblue and Southwest manually. With that in mind, don't wait long to book - prices don't seem like they're going to come down any time in the near future, but just keep going up.
Also, in this day and age, don't be afraid to book the segments separately - going on one airline, coming home on another. I just saved a Dear Friend a couple of hundred by booking her on United going to a destination and Southwest going home.