A look at why DEN to PHX carries the traffic it does, who flies it, and what to expect onboard.
Denver to Phoenix connects two of the busiest hub airports in the Southwest and Mountain regions, and the traffic reflects that hub-to-hub character: a meaningful share of passengers are connecting onward rather than starting or ending their trip at either airport. United and Southwest both run it as a core route in their network, with Southwest in particular using it as a building block for connections across its point-to-point system. The roughly two-hour flight time and steady year-round demand, winter ski traffic into Denver balanced against winter sun-seeker traffic into Phoenix, keeps load factors stable across seasons in a way that purely leisure-driven routes rarely achieve.
Nonstop flights from Denver to Phoenix take approximately 2 hours. The route crosses a single time zone, and block times stay consistent across airlines and seasons.
Every carrier flying DEN ⇄ PHX nonstop, combining both directions, ranked by passenger share.
Which airplane types operate DEN ⇄ PHX, based on official reporting across both directions.
Live nonstop schedules in both directions. Switch tabs to see the return leg.




More of the highest-volume nonstop routes in the country.