AirHint found the following cheapest one-way flights from Sacramento (SMF) to San Diego (SAN) in December 2025 (see full year).
One-Way flights
| 29 Dec | Southwest Airlines | direct | |
| 26 Dec | Alaska Airlines | direct | |
| 27 Dec | Alaska Airlines | direct | |
| 28 Dec | Southwest Airlines | direct |
Also check the deals for return flights from Sacramento to San Diego in December.
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