AirHint found the following cheapest return flights from San Diego (SAN) to Denver (DEN) in November 2025 (see full year).
Return flights
| 28 Nov - 01 Dec | Frontier Airlines | direct | |
| 28 Nov - 30 Nov | Frontier Airlines | direct | |
| 30 Nov - 01 Dec | Frontier Airlines | direct | |
| 30 Nov - 02 Dec | Frontier Airlines | ||
| 30 Nov - 02 Dec | Frontier Airlines | direct |
Also check the deals for one-way flights from San Diego to Denver in November.
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