Cheapest one-way flights from San Diego to San Jose in September from $43

AirHint found the following cheapest one-way flights from San Diego (SAN) to San Jose (SJC) in September 2025 (see full year).

One-Way flights

30 Sep Spirit Airlines
23 Sep Spirit Airlines
24 Sep Spirit Airlines
22 Sep Alaska Airlines direct
18 Sep Frontier Airlines
30 Sep Alaska Airlines direct
11 Sep Frontier Airlines
04 Sep Frontier Airlines
05 Sep Frontier Airlines
16 Sep Spirit Airlines

Also check the deals for return flights from San Diego 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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