Cheapest one-way flights from San Diego to San Francisco in September from $28

AirHint found the following cheapest one-way flights from San Diego (SAN) to San Francisco (SFO) in September 2025 (see full year).

One-Way flights

11 Sep Frontier Airlines direct
18 Sep Frontier Airlines direct
23 Sep Alaska Airlines direct
30 Sep Alaska Airlines direct
27 Sep Frontier Airlines direct
12 Sep Frontier Airlines direct
14 Sep Frontier Airlines direct
05 Sep Frontier Airlines direct
20 Sep Frontier Airlines
28 Sep Frontier Airlines

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

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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