AirHint found the following cheapest return flights from Omaha (OMA) to Denver (DEN) in May 2026 (see full year).
Return flights
| 18 May - 20 May | Frontier Airlines | ||
| 30 May - 31 May | Frontier Airlines | direct | |
| 18 May - 20 May | Southwest Airlines | direct | |
| 29 May - 31 May | United | direct | |
| 18 May - 25 May | United | direct |
Also check the deals for one-way flights from Omaha to Denver in May.
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