AirHint found the following cheapest return flights from Omaha (OMA) to Denver (DEN) in October 2025 (see full year).
Return flights
| 30 Oct - 03 Nov | Frontier Airlines | direct | |
| 28 Oct - 04 Nov | Southwest Airlines | direct | |
| 26 Oct - 26 Oct | United | direct | |
| 28 Oct - 29 Oct | United | direct |
Also check the deals for one-way flights from Omaha to Denver in October.
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