Cheapest return flights from San Francisco to San Diego in January from 74€

AirHint found the following cheapest return flights from San Francisco (SFO) to San Diego (SAN) in January 2026 (see full year).

Return flights

09 Jan - 11 Jan Frontier Airlines direct
11 Jan - 15 Jan Frontier Airlines direct
01 Jan - 09 Jan Frontier Airlines direct
14 Jan - 20 Jan Alaska Airlines direct
16 Jan - 19 Jan Frontier Airlines direct
23 Jan - 24 Jan Southwest Airlines direct
14 Jan - 19 Jan Southwest Airlines direct
02 Jan - 03 Jan Frontier Airlines direct
01 Jan - 03 Jan Frontier Airlines direct
04 Jan - 08 Jan Frontier Airlines direct

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

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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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