
We went to WDW in June and flew from DFW. We were thinking that we would end up driving because initially the flights that we found were $350 per person!

At that point driving made sense. We had estimated $500 for gas, $200 in hotel cost (one each way) and $100 food costs on the road. We estimated $800 to be our break even point.
I kept playing with the dates, plus or minus one each way. I found flights and hotel booked together through AirTran for $1465. This was for 4 non-stop flights and 7 nights at All Star Sports. (They had other Disney hotels but we wanted the cheapest Disney property!)
The cost of booking the room only was around $800 so that meant we could fly for the the difference of less than $700. (Is my math making sense?)
At that point, we decided to fly.
I would consider driving but to be honest, I would dread it. My kids are 7 and 5 and we have a DVD player in the car, lots of gadgets, etc... I think that if you do decide to drive, take it easy on the day you arrive, and the day you leave. You don't want to be too exhausted!
We looked at flying SW but they were much more expensive than AirTran. AA and SW were very competitive in pricing when we were looking. Since DFW is so much closer than Love for us, we were happy that we ended up on Air Tran.
Good luck!