Cheapest return flights from San Francisco to San Jose in September from 351€

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

Return flights

11 Sep - 24 Sep Copa
23 Sep - 28 Sep Copa
24 Sep - 28 Sep Copa
15 Sep - 24 Sep Hawaiian Airlines
30 Sep - 05 Oct Hawaiian Airlines
06 Sep - 13 Sep Alaska Airlines
15 Sep - 24 Sep United direct
11 Sep - 24 Sep United direct
07 Sep - 14 Sep United direct
05 Sep - 14 Sep United direct
06 Sep - 13 Sep United direct
30 Sep - 05 Oct United direct

Also check the deals for one-way flights from San Francisco to San Jose 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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