Last night I looked at the flights to Oklahoma City as if I was going to visit Jeri. On my previous visits I flew Frontier Airlines, which has a lot of flights out of Denver. When I went this spring there was a choice between regular size jets and the Bombardier Q400 Turboprop. I decided to take the Turboprop because I wanted to see what it would be like.
Here is a regular size jet:

This is the Q400 Turboprop (flying over the Grand Canyon):

It's a larger plane than a little tiny puddle jumper. This is taken from Row 19, the very last row in the airplane - it holds 76 passengers. On a real airplane Row 19 is about halfway down the length of the plane. The overhead compartments were smaller than standard, so hardly anything would fit in them. Our 'carry-on' baggage was put in with the checked baggage - we turned it over to the baggage handlers at the door of the plane.
One good thing was there was better leg room than most airplanes, but side-to-side the seats were smaller so if you've got two fat people sitting next to each other, it's very friendly.

Being smaller, we flew lower, and the plane was more susceptible to turbulence. The take offs and landings were a little scary, or in the current street vernacular: sketchy. And it was very noisy.
Given a choice, I would not want to fly that type of plane in any kind of rainy or snowy weather. Or windy. Or sunny and calm.
All said, it was more adventurous than I'd planned, and due to changes in the routes, now all the Frontier flights from Denver to Oklahoma City are on this type of airplane. Therefore, I'll be looking at the United Airlines schedule for my next visit. Unless by that time I'm ready for another adrenaline rush.