Cheapest return flights from Chicago to San Jose in December from 308€

AirHint found the following cheapest return flights from Chicago (MDW) to San Jose (SJO) in December 2025 (see full year).

Return flights

08 Dec - 15 Dec Frontier Airlines
14 Dec - 16 Dec Frontier Airlines
06 Dec - 11 Dec Frontier Airlines
16 Dec - 21 Dec Frontier Airlines
15 Dec - 19 Dec Frontier Airlines
06 Dec - 12 Dec Frontier Airlines
13 Dec - 20 Dec Frontier Airlines
11 Dec - 16 Dec Frontier Airlines
06 Dec - 14 Dec Frontier Airlines
13 Dec - 16 Dec Frontier Airlines
28 Dec - 11 Jan Frontier Airlines
26 Dec - 02 Jan Frontier Airlines
28 Dec - 02 Jan Frontier Airlines
24 Dec - 03 Jan Frontier Airlines
23 Dec - 01 Jan Frontier Airlines
27 Dec - 01 Jan Frontier Airlines

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

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