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

Return flights

01 Mar - 03 Mar	Spirit Airlines
02 Mar - 03 Mar	Spirit Airlines
10 Mar - 17 Mar	Copa
12 Mar - 17 Mar	Copa
06 Mar - 14 Mar	Copa
07 Mar - 15 Mar	Copa
11 Mar - 15 Mar	Copa
18 Mar - 22 Mar	Copa
15 Mar - 22 Mar	Copa
10 Mar - 17 Mar	United	direct
26 Mar - 04 Apr	Aeromexico

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

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.

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Cheapest return flights from Chicago to San Jose in March from 285€

Return flights