Just for fun, I tried to see what a flight on SW for our December trip would cost. For the two of us, the cheapest possible (for the days we would need) came to almost $600. Of course, in one case, there were 2 stops, and in the other case, 1 stop. All said, travel time would end up being about 10 hours total to get from our door to Disney in those cases.
Sadly, our direct flights using Delta in 2020 cost us just over $600 (maybe a total of $50 difference). Now, flying on Delta would run us around $1200. 
In both cases, I would then need to add on the cost of transportation to/from the airport.
In any case, we’re driving. Because even with gas prices rising and needing hotel and food, I can pay a total of about $600 for the two of us…plus we end up with a car on property.