Cheapest one-way flights from San Francisco to San Diego in January from 45€

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

One-Way flights

13 Jan Hawaiian Airlines direct
07 Jan Alaska Airlines direct
18 Jan United direct
11 Jan Frontier Airlines
11 Jan Frontier Airlines direct
04 Jan Alaska Airlines direct
05 Jan Southwest Airlines direct
16 Jan United direct
01 Jan Southwest Airlines
01 Jan Southwest Airlines direct

Also check the deals for return flights from San Francisco to San Diego in January.

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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