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

Return flights

01 Oct - 07 Oct	United
07 Oct - 28 Oct	Spirit Airlines
07 Oct - 18 Oct	Spirit Airlines
24 Oct - 28 Oct	Spirit Airlines
08 Oct - 28 Oct	Spirit Airlines
08 Oct - 18 Oct	Spirit Airlines
10 Oct - 18 Oct	United
10 Oct - 28 Oct	Spirit Airlines

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

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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Cheapest return flights from San Diego to San Jose in October from 325€

Return flights