We were going to drive (again as just did early last month) in August doing a WDW pre-stay and
DCL cruise. When Southwest released their latest dates (with $99 out of Buffalo to Orlando) it spurned me to look elsewhere. I've had a friend fly Spirit out of Pittsburgh so we looked at them out of Detroit. We ended up booking an Orlando direct flight for $59 USD and booked back out of Tampa direct for $79 USD so for $138 USD each (or around $170 CDN at that time) all 6 of us will be flying for $1020 CDN.
True we will still have a 4 hr drive to Detroit with parking ($60 USD) and a one-way rental from PC to Tampa ($104 CDN for a van) but with the cost of gas around $275 USD last month with our van (forget Gas Buddy's underestimated costs and gas has gone up about 15% since last month), meals on the road for all and (maybe if exhausted) a nights accommodation on the road, for a few hundred $ more we eliminate better than 32 hours of driving, arrive late morning down south and leaving to return north early evening (great flight times). Add the bonus of not arriving exhausted from a drive straight (we've done numerous times) or adding the cost of accommodation with a stop en-route
AND not having to do the long drive back after a relaxing vacation (the worst part of driving) we'll really enjoy flying this time around with the cheap flights found. Now all we have to hope is the airline stays afloat till we return