AirHint found the following cheapest return flights from Denver (DEN) to Omaha (OMA) in December 2025 (see full year).
Return flights
| 05 Dec - 11 Dec | Frontier Airlines | direct | |
| 04 Dec - 07 Dec | Frontier Airlines | direct | |
| 01 Dec - 14 Dec | Frontier Airlines | direct | |
| 22 Dec - 29 Dec | Frontier Airlines | ||
| 22 Dec - 29 Dec | United | direct |
Also check the deals for one-way flights from Denver to Omaha in December.
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