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

Return flights

22 Aug - 08 Sep	Spirit Airlines
11 Aug - 08 Sep	Spirit Airlines
11 Aug - 20 Aug	Spirit Airlines
11 Aug - 14 Aug	Spirit Airlines
11 Aug - 21 Aug	Spirit Airlines
03 Aug - 05 Aug	Spirit Airlines
03 Aug - 06 Aug	Spirit Airlines
03 Aug - 07 Aug	Spirit Airlines
03 Aug - 20 Aug	Spirit Airlines
03 Aug - 14 Aug	Spirit Airlines
03 Aug - 21 Aug	Spirit Airlines
20 Aug - 24 Aug	Spirit Airlines

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

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 August from 306€

Return flights