Deal found on July 8, 2026
Phoenix to Denver
$66$20267% off
Round trip
Even cheaper now! We flagged Denver out of Phoenix at $130 just yesterday, and today Frontier dropped it to $66, a 56% cut off the typical $151 fare. Dates stay flexible into the fall, so grab the nonstop for a quick Rockies hiking trip or a Denver brewery weekend.
Travel dates
Sep 14 to Sep 23
Date options
6 at this price
Lowest we've seen
$51
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