Cheapest return flights from San Francisco to San Diego in December from 51€

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

Return flights

05 Dec - 08 Dec Frontier Airlines direct
11 Dec - 17 Dec Hawaiian Airlines direct
05 Dec - 07 Dec Frontier Airlines direct
16 Dec - 20 Dec Southwest Airlines direct
29 Dec - 05 Jan Frontier Airlines direct
27 Dec - 30 Dec Frontier Airlines direct
18 Dec - 21 Dec Southwest Airlines direct
20 Dec - 26 Dec Frontier Airlines direct
21 Dec - 24 Dec United direct
28 Dec - 06 Jan United direct
25 Dec - 14 Jan Southwest Airlines
25 Dec - 05 Jan Frontier Airlines
21 Dec - 26 Dec Frontier Airlines direct
24 Dec - 05 Jan Southwest Airlines
26 Dec - 02 Jan Frontier Airlines direct
24 Dec - 28 Dec United
25 Dec - 03 Jan United
26 Dec - 03 Jan Frontier Airlines direct
25 Dec - 01 Jan Southwest Airlines
30 Dec - 01 Jan Southwest Airlines

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.

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