Cheapest return flights from San Diego to San Jose in September from $86

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

Return flights

23 Sep - 30 Sep Spirit Airlines
24 Sep - 30 Sep Spirit Airlines
23 Sep - 07 Oct Spirit Airlines
30 Sep - 07 Oct Spirit Airlines
24 Sep - 07 Oct Spirit Airlines
25 Sep - 30 Sep Frontier Airlines
18 Sep - 23 Sep Frontier Airlines
25 Sep - 30 Sep Alaska Airlines direct
18 Sep - 21 Sep Frontier Airlines
11 Sep - 12 Sep Frontier Airlines
25 Sep - 28 Sep Frontier Airlines
29 Sep - 06 Oct Frontier Airlines
27 Sep - 30 Sep Spirit Airlines
23 Sep - 14 Oct Spirit Airlines
27 Sep - 07 Oct Spirit Airlines
30 Sep - 14 Oct Spirit Airlines
24 Sep - 14 Oct Spirit Airlines
04 Sep - 08 Sep Frontier Airlines
27 Sep - 14 Oct Spirit Airlines
25 Sep - 07 Oct Spirit Airlines

Also check the deals for one-way 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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