Cheapest return ORD–SJO flights, August

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

Return flights

01 Aug - 05 Sep Frontier Airlines
11 Aug - 30 Aug Frontier Airlines
01 Aug - 30 Aug Frontier Airlines
01 Aug - 07 Sep Frontier Airlines
23 Aug - 29 Aug Frontier Airlines
24 Aug - 28 Aug Copa
25 Aug - 28 Aug Copa
18 Aug - 18 Aug Copa
01 Aug - 08 Aug Copa
18 Aug - 26 Aug Copa
14 Aug - 18 Aug Copa
13 Aug - 17 Aug Copa
28 Aug - 25 Sep Copa

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

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