Cheapest return flights from San Francisco to San Diego in December from $77

AirHint found the following cheapest return flights from San Francisco (SFO) to San Diego (SAN) in December 2025 (see full year).

Return flights

08 Dec - 10 Dec Alaska Airlines direct
05 Dec - 07 Dec Frontier Airlines direct
07 Dec - 08 Dec Frontier Airlines direct
06 Dec - 07 Dec Southwest Airlines direct
05 Dec - 10 Dec Frontier Airlines
20 Dec - 31 Dec Alaska Airlines direct
03 Dec - 06 Dec Frontier Airlines
17 Dec - 19 Jan Alaska Airlines direct
20 Dec - 07 Jan Alaska Airlines direct
18 Dec - 23 Dec Alaska Airlines direct
19 Dec - 08 Jan Alaska Airlines direct
19 Dec - 21 Dec Alaska Airlines direct
27 Dec - 04 Jan Alaska Airlines direct
21 Dec - 26 Dec United direct

Also check the deals for one-way flights from San Francisco to San Diego in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in San Diego

Cheap car rent in San Diego

Feel free to contact us with any feedback or request another flight research.