Deal found on August 31, 2026
Phoenix to Denver
$68$21769% off
Round trip
This Frontier nonstop usually runs about $118, and it's down to $68 right now, a genuinely cheap way to get from the desert to the mountains. Denver works well as a jumping-off point for fall hiking before ski season ramps up, and at this price it barely dents a travel budget. One of the most bookable fares in today's lineup.
Travel dates
Dates in October
e.g. Oct 17 – Oct 26 · 9 nights
Date options
3 at this price
Lowest we've seen
$51
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