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

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

One-Way flights

20 Sep Frontier Airlines direct
27 Sep Frontier Airlines direct
29 Sep Southwest Airlines direct
30 Sep Southwest Airlines direct
13 Sep Frontier Airlines direct
21 Sep Hawaiian Airlines direct
23 Sep Alaska Airlines direct
24 Sep Alaska Airlines direct
28 Sep United direct
22 Sep Southwest Airlines direct

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