United to restart Denver-Flagstaff flights in 2027
United plans to resume year-round Denver-Flagstaff service from August 2027, more than four years after pausing the route. Delta will also begin serving Flagstaff from Salt Lake City next year.

United will restart Denver–Flagstaff, Arizona flights on Aug. 10, 2027, reviving a domestic short-haul route it last flew in 2022. According to the airline, the service will operate twice daily, year-round.
United dropped the route in October 2022. Flagstaff officials said at the time that rising jet fuel prices and staffing shortages shaped the decision.
Delta said last week it will link Flagstaff with Salt Lake City starting June 7, 2027. American Airlines is currently the only carrier at Flagstaff Pulliam Airport, with flights to Phoenix and Dallas/Fort Worth.
Denver → Flagstaff
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Sources
- airlinegeeks.comUnited to Resume Western U.S. Route