Flagstaff
Best for: High-elevation outdoors, Dark-sky nights, Northern Arizona road trips, Families who want variety
Trip shape: 3 to 4 days · car-essential
Flagstaff is where northern Arizona trips get their breathing room. Use the high country for one big outdoor day, keep downtown for food and dark-sky evenings, and do not treat the Grand Canyon, Sedona, and volcanic monuments as same-day errands.