Phoenix to Denver in December 2026
PHX to DEN · Round trips departing in December · Economy · Prices per person in USD
Prices updated
Typical in December
$138
Median of 5 date combinations
Usual on this route
$136
December's cheapest is 2% less
Typical price — worth watching
About the usual $136, and prices have been rising this week. Based on 47 days of prices.
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December 2026 by departure day
Cheapest round trip leaving that day| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 $138 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 $136 | 25 $133 | 26 $171 | 27 |
| 28 | 29 | 30 | 31 |
Empty days: no round trip found for that departure date yet. Green = cheapest third of the month.
Cheapest dates in December 2026
Round trip, per person-
Dec 25 – 29 4 nights · leave Fri$133Frontier Airlines Nonstop · 1h 55mBook
-
Dec 24 – 29 5 nights · leave Thu$136Frontier Airlines Nonstop · 1h 56mBook
-
Dec 10 – 17 7 nights · leave Thu$138Frontier Airlines Nonstop · 1h 56mBook
-
Dec 26 – 29 3 nights · leave Sat$171Frontier Airlines Nonstop · 1h 50mBook
-
Dec 24 – 28 4 nights · leave Thu$206Frontier Airlines Nonstop · 1h 56mBook
Prices change often. The booking site shows the final price before you pay.
Cheapest by trip length
2–4 nights
$133
Dec 25 – 29 · 3 options
5–7 nights
$136
Dec 24 – 29 · 2 options
Good to know for December
Airline
Frontier Airlines
Every cheap fare we track on this route is on Frontier Airlines.
December vs other months
Cheapest round trip per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $204 |
| December 2026 | $133 (cheapest month) |
Phoenix to Denver in December: questions
What's the cheapest date to fly from Phoenix to Denver in December 2026?
Leaving Friday, December 25 and returning Tuesday, December 29 (4 nights) for $133 round trip on Frontier Airlines, the cheapest of the 5 date combinations we track that month.
How much is a round trip from Phoenix to Denver in December 2026?
From $133. Half of the 5 date combinations we track are under $138. Prices are per person in USD and change often.