Cheapest one-way flights from Tucson to Denver in December from $61

AirHint found the following cheapest one-way flights from Tucson (TUS) to Denver (DEN) in December 2025 (see full year).

One-Way flights

15 Dec Frontier Airlines
11 Dec Frontier Airlines
15 Dec United direct
22 Dec United direct
31 Dec United direct
30 Dec United direct
11 Dec United direct

Also check the deals for return flights from Tucson to Denver in December.

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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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