I have immediate family that is a minimum 15-20 hour drive away in 3 different directions, but I have the option to fly and get there much faster for a price. I

I have immediate family that is a minimum 15-20 hour drive away in 3 different directions, but I have the option to fly and get there much faster for a price. If flying was free, how long do you think the lines would be to board planes? The same principle applies here. Do you have an option to drive there and avoid toll roads? If so, how much extra time would it take you? Surely not 15-20 hours like it takes to see my family.