Cheapest return flights from Phoenix to Denver in April from $82

AirHint found the following cheapest return flights from Phoenix (PHX) to Denver (DEN) in April 2026 (see full year).

Return flights

25 Apr - 27 Apr Frontier Airlines direct
14 Apr - 16 Apr Frontier Airlines direct
22 Apr - 22 Apr Frontier Airlines direct
02 Apr - 05 Apr Frontier Airlines direct
24 Apr - 27 Apr Frontier Airlines direct
09 Apr - 12 Apr Frontier Airlines direct
16 Apr - 19 Apr Frontier Airlines direct
10 Apr - 13 Apr Southwest Airlines direct

Also check the deals for one-way flights from Phoenix to Denver in April.

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