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

Return flights

08 Aug - 15 Aug	Frontier Airlines
27 Aug - 03 Sep	Copa
08 Aug - 25 Aug	Frontier Airlines
26 Aug - 06 Sep	Copa
14 Aug - 19 Aug	Frontier Airlines
13 Aug - 20 Aug	jetBlue
19 Aug - 27 Aug	Hawaiian Airlines
11 Aug - 25 Aug	Frontier Airlines
08 Aug - 22 Aug	Frontier Airlines
18 Aug - 27 Aug	Frontier Airlines
07 Aug - 14 Aug	Frontier Airlines
18 Aug - 25 Aug	Frontier Airlines
29 Aug - 01 Sep	Frontier Airlines
04 Aug - 04 Sep	Avianca
27 Aug - 03 Sep	United	direct
28 Aug - 02 Sep	United	direct
29 Aug - 01 Sep	United	direct
04 Aug - 04 Sep	United	direct

Also check the deals for one-way flights from San Francisco 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from San Francisco to San Jose in August from 350€

Return flights