Cheapest return flights from Phoenix to Denver in October from $47

AirHint found the following cheapest return flights from Phoenix (PHX) to Denver (DEN) in October 2025 (see full year).

Return flights

01 Oct - 07 Oct Frontier Airlines direct
21 Oct - 27 Oct Frontier Airlines direct
22 Oct - 27 Oct Frontier Airlines direct
25 Oct - 27 Oct Frontier Airlines direct
07 Oct - 07 Oct Frontier Airlines direct
24 Oct - 27 Oct Frontier Airlines direct
31 Oct - 01 Nov Frontier Airlines direct
23 Oct - 27 Oct Frontier Airlines direct
04 Oct - 07 Oct Frontier Airlines direct
14 Oct - 17 Oct Frontier Airlines direct
17 Oct - 19 Oct Frontier Airlines direct

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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