Mmmm interesting question-I debate this every time we go.
So far I have flown 4 times and have driven 3 times.
Usually when I go with just one of my kids I fly. I dh and my other daugther come we drive.
We did fly altogether once out of Buffalo and hated it - the waiting, the luggage, stroller, all those people, then retrieving the luggate yuck and the immigration and customs thing was a pain the a.. so we make it the start of the vacation as soon as we leave the house.
Kids love to drive and watch movies, game boy, colouring, stickers etc. We usually stay over at a hotel one night. During March Break we made it to Beckley and had left around 9:00 a.m. from Ajax, (east of Toronto). Another time we had made it to Charlotte but we had left at 2:00 a.m. and were on the go for about 16 hours.
I think I preferred leaving in the early morning hours.
We get to Disney by the end of the second day around dinner time.
We have debated driving straight through but if we got there in the morning we figure we would be exhausted and the kids would be ready to go go go- so we feel there is no advantage to that.
The cost down for us was $200 for gas and $100.00 for hotel - I admit I won't just stay anywhere - the country inn and suites and Hampton or Red Roof inn are my favourite
On the way back we stay over two nights and try to stay over at the outlet mall in Pennsylvania and shop
We drive a Ford Freestyle and had good usage of gas considering this vehicle is an SUV/van crossover ( 10.6 litres per 100 km)
Take care and good luck
Denise