For our trip in May of last year, we paid approx. $130 RT per person on SWA from KC to MCO. The May airfares usually don't book up as fast as the ones in March. I wasn't as lucky as Aleson and missed (by 3-4 hours) when they first opened up the March dates for this year. By the time I checked, the cheapest was from STL and it was $365 per person and MCI-MCO was even higher. Wasn't going to pay that so now unless a DING comes through, I guess we will be driving in March.
I'm taking my laptop with me to WDW in Feb. so I can check for DINGS for March and for SWA to open schedule for our May trip. (By the way our airfare from MCI-MCO on SWA in Feb. is only $117 RT per person.)
Good luck!
Donna