Cheapest return flights from San Francisco to San Diego in October from $78

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

Return flights

17 Oct - 20 Oct Frontier Airlines direct
03 Oct - 05 Oct Frontier Airlines direct
03 Oct - 10 Oct Frontier Airlines direct
23 Oct - 26 Oct Frontier Airlines direct
17 Oct - 18 Oct Frontier Airlines direct
31 Oct - 02 Nov Frontier Airlines direct
20 Oct - 27 Oct Frontier Airlines direct
08 Oct - 15 Oct Alaska Airlines direct
07 Oct - 09 Oct Southwest Airlines direct
08 Oct - 12 Oct Alaska Airlines direct
14 Oct - 14 Oct Southwest Airlines direct

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

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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