Driving Distance and Travel Time from Flagstaff to Phoenix

The most common way to travel between Flagstaff and Phoenix is by car on Interstate 17 (I‑17). According to route‑planning data, the non‑stop driving distance is about 144 miles, and the average travel time is roughly 2 hours 8 minutes when driving at typical highway speeds (Source: distance‑cities.com). This direct route runs north‑south through the heart of Arizona, connecting the two cities in a little under two and a half hours under normal traffic conditions.