Cheapest return flights from San Francisco to San Jose in September from $349

Best time to book flights for San Francisco (SFO) to San Jose (SJO) flights at AirHint

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

Return flights

03 Sep - 08 Sep Alaska Airlines
18 Sep - 27 Sep Avianca
30 Sep - 09 Oct Avianca
08 Sep - 16 Sep Alaska Airlines
09 Sep - 16 Sep Avianca
23 Sep - 06 Oct Avianca
09 Sep - 16 Sep United direct
08 Sep - 16 Sep United direct
30 Sep - 09 Oct United direct
18 Sep - 27 Sep 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose