So i started researching flights for our July trip. 
We are flying July 1-10th from Baltimore to Orlando.
Currently it would cost $633.60 for four people for Airtran (doesn't count checked bags which we will have 3)
It would cost $1100 to fly Southwest.... this seems like such a HUGE difference.
I like Southwest but Airtran seems to be so low. I flew Airtran once to Atlanta a year or so ago and had no problems... Should I just book with Airtran or wait it out to see if Southwest fares go down.
What would you do??? Thanks for your help in advance.

We are flying July 1-10th from Baltimore to Orlando.
Currently it would cost $633.60 for four people for Airtran (doesn't count checked bags which we will have 3)
It would cost $1100 to fly Southwest.... this seems like such a HUGE difference.
I like Southwest but Airtran seems to be so low. I flew Airtran once to Atlanta a year or so ago and had no problems... Should I just book with Airtran or wait it out to see if Southwest fares go down.
What would you do??? Thanks for your help in advance.