We are doing something similar, but I wanted a direct flight instead of multiple stops. So I got direct flights from Buffalo to Phoenix for $160 each way, 4 hour flight. We are doing Grand Canyon, Bryce, Moab, Zion, Lake Powell, Sedona, Monument Park. We will be gone 11 days. Haven't booked my air bnbs or hikes yet, but plan to camp out a few nights out there.