Cheapest return flights from Chicago to San Jose in April from 337€

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

Return flights

27 Apr - 04 May Frontier Airlines
25 Apr - 02 May Frontier Airlines
11 Apr - 14 Apr Frontier Airlines
15 Apr - 20 Apr Frontier Airlines
10 Apr - 16 Apr Southwest Airlines
23 Apr - 28 Apr Frontier Airlines
16 Apr - 21 Apr Southwest Airlines
02 Apr - 06 Apr Porter Airlines (Canada) Ltd
20 Apr - 24 Apr Delta
20 Apr - 28 Apr Delta
01 Apr - 04 Apr Delta

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

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