Delta has LOTS of flights into MCO. Skybus has ONE daily flight into St. Augestine. If the Skybus plane breaks you are STUCK. If the Delta plane breaks you will eventually get to MCO.....
That alone is a consideration.
As for major airports vs. smaller ones. As a general rule smaller airports are nice for flight arrival and departure. However, you pay for that on the transportation side.
Delta flies to MCO. Skybus flies to St. Augustine. At MCO you have a choice of DME and/or LOTS of rental cars. At St Augustine you have
Enterprise....
If something does happen Delta has a phone line (granted it's not great) that you can call to work on the issue. Let me know when you find the Skybus phone number.
Since the DIS places a HUGE amount of emphasis on assigned seating. Delta has it Skybus has the following:
"We use “open” seating, and board by groups. We don’t assign seats, but you can purchase Priority Boarding if you’d like to be among the first to board. In general, the sooner you check in the more seats you’ll be able to choose from. To learn more about Priority Boarding, click here. "
In other words... Assigned seating $10 a pop.... Not "industry standard", but it may be eventually. (And Skybus doesn't even give you the 24 hour check in SW does. If you have to sit with junior either pay up are arrive EARLY!)
And as for luggage.
Delta gives you TWO FREE pieces under 50 lbs.
Skybus gives you ZERO FREE pieces under 50 lbs.
IMHO that's not "Essentially the same scheme "
Now if you live in Columbus this might still be the way to go (although the limited flights etc would make me nervous.) Howver if you live in Hartford or some other city and are going to MCO remember that you have to claim your luggage and recheck in Columbus. All fees must be paid twice. (Luggage, "priority" boarding) Also, you need to really read the booking info and other info on thier website There is one statement that would REALLY concern me if I was doing a "connection" "If you miss your flight there are no refunds and no credit towards another. " There is also a statement that there is no standby. So if the flight INTO Columbus is delayed and you miss the flight to your destination, you could be vacationing in lovely Columbus Ohio