There is an air strip right on Rt 66 near Peach Springs and the Grand Canyon Caverns
If you are interested in the history of route 66 and the Santa Fe line it follows, land at Winslow, AZ and go to the only restored Harvey House resort from the golden age of rail travel! It sits between 66 and the rail line--much info about it on the internet!! Lunch or dinner in the turquoise room!
Cheers,
db
Williams (CMR) is on 66, nice small town, the train leaves there to go to the Grand Canyon, that's a fun ALL day trip. Or land at Valle (40G) and visit the museum, its Chino's auxiliary site. Swing by Sedona (SEZ) and check out the red rocks. Cottonwood (P52) just south of sedona has cheap gas.
The Posada is interesting and well restored and you will be landing at Winslow Airport, designed by Charles Lindbergh for TAT Airlines and the early combined train/plane US crossing route.
Allow time for a short walk from the Posada to the the "Standing on the Corner" statue on Route 66. Complete with a painted-on reflection of the girl in the flat bed Ford and a eagle in the window.
I'll second the recommendation for Sundance (HSD) in Oklahoma City for fuel and/or overnight. Great fuel prices, very good FBO staff, and last year when we stopped in to visit friends they had Range Rovers for crew cars!
Three years ago, my brother and I flew out to Scottsdale to see some spring training baseball. Our fuel stop from Bentonville, AR to Scottsdale was Tucumcari, NM (TCC). Another good Route 66 stop. Good fuel prices. The city had an old police cruiser as the crew car. Still had the spotlight mounted on the side. They directed us to a great diner downtown. Several nice restored Route 66 motels, including one that has a garage for each room.