AirHint found the following cheapest return flights from Phoenix (PHX) to Denver (DEN) in February 2026 (see full year).
Return flights
| 01 Feb - 03 Feb | Frontier Airlines | direct | |
| 24 Feb - 28 Feb | Frontier Airlines | direct | |
| 27 Feb - 01 Mar | Frontier Airlines | direct | |
| 02 Feb - 15 Feb | Frontier Airlines | direct |
Also check the deals for one-way flights from Phoenix to Denver in February.
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