Cheapest return flights from Denver to Phoenix in May from $55

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

Return flights

12 May - 15 May Frontier Airlines direct
02 May - 04 May Frontier Airlines direct
09 May - 10 May Frontier Airlines direct
14 May - 18 May Frontier Airlines direct
08 May - 10 May Frontier Airlines direct
01 May - 03 May Frontier Airlines direct
21 May - 25 May Frontier Airlines direct
21 May - 24 May Frontier Airlines direct

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

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