Cheapest return flights from Kansas City to Denver in December from $165

AirHint found the following cheapest return flights from Kansas City (MCI) to Denver (DEN) in December 2025 (see full year).

Return flights

12 Dec - 15 Dec Frontier Airlines direct
18 Dec - 20 Dec Southwest Airlines direct
30 Dec - 03 Jan United direct
29 Dec - 03 Jan Frontier Airlines direct
28 Dec - 03 Jan Southwest Airlines direct
27 Dec - 30 Dec Southwest Airlines

Also check the deals for one-way flights from Kansas City to Denver in December.

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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