Looking out the window at the landscape below remains the best part of flying. My family and I went to Boise, Idaho, last week and the views were extra good. I've driven from Fort Collins to Cody, Wyoming, and Idaho Falls, Idaho, for Thanksgiving in years past when I had more time than money, but I'm done with that. BOI-DEN-Fort Collins (last leg by car) takes 5 hours, maximum. Traversing Wyoming on the ground via I-80 (Wyoming alone, not counting the CO, UT, ID legs) in Winter takes 2d6 + 4 hours.
I was on the north side of a 737-900 leaving Boise at 7 a.m. Friday and got some superb early morning views of the Lost River (ID), Teton (WY), Wasatch (UT), Uintah (UT), Rawah (CO), and Never Summer (CO) ranges.