United to resume Denver‑Flagstaff flights in August 2027

United announced it will restart its Denver to Flagstaff service on August 10, 2027, offering two daily year‑round flights after pausing the route in October 2022.
Delta will begin serving Flagstaff from Salt Lake City on June 7, 2027, while American Airlines continues to operate flights from Flagstaff Pulliam Airport to Phoenix and Dallas/Fort Worth.