Cheapest return SFO–SJO flights, August

AirHint found the following cheapest return flights from San Francisco (SFO) to San Jose (SJO) in August 2026 (see full year).

Return flights

29 Aug - 06 Sep Frontier Airlines
21 Aug - 27 Aug Frontier Airlines
01 Aug - 08 Aug Frontier Airlines
09 Aug - 15 Aug Frontier Airlines
18 Aug - 25 Aug Copa
15 Aug - 15 Sep Frontier Airlines
02 Aug - 06 Aug Alaska Airlines
17 Aug - 22 Aug Copa
29 Aug - 06 Sep United direct
09 Aug - 15 Aug United direct
21 Aug - 27 Aug United direct
02 Aug - 06 Aug United direct

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

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