Cheapest return flights from San Francisco to San Diego in September from 64€

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

Return flights

13 Sep - 20 Sep Alaska Airlines direct
17 Sep - 17 Sep Southwest Airlines direct
13 Sep - 15 Sep Southwest Airlines direct
04 Sep - 08 Sep Southwest Airlines direct
10 Sep - 13 Sep Southwest Airlines direct
22 Sep - 25 Sep Southwest Airlines direct
27 Sep - 29 Sep Southwest Airlines direct
04 Sep - 11 Sep Southwest Airlines direct
30 Sep - 09 Oct Southwest Airlines direct
20 Sep - 03 Oct Southwest Airlines direct
27 Sep - 02 Oct Southwest Airlines direct
29 Sep - 06 Oct Hawaiian Airlines direct
19 Sep - 22 Sep United direct
25 Sep - 27 Sep United direct
13 Sep - 14 Oct Southwest Airlines direct
15 Sep - 06 Oct Southwest Airlines direct
28 Sep - 05 Oct Hawaiian Airlines direct

Also check the deals for one-way 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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