Cheapest return flights from Ontario to San Jose in March from $351

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

Return flights

05 Mar - 12 Mar Avianca
17 Mar - 31 Mar Avianca
12 Mar - 19 Mar Avianca
24 Mar - 26 Mar Avianca
04 Mar - 10 Mar Southwest Airlines
02 Mar - 06 Mar Southwest Airlines
30 Mar - 07 Apr Southwest Airlines
05 Mar - 09 Mar GOL Linhas AΓ©reas
23 Mar - 28 Mar Southwest Airlines
12 Mar - 17 Mar Southwest Airlines
28 Mar - 05 Apr Volaris
12 Mar - 18 Mar Southwest Airlines
28 Mar - 08 Apr Southwest Airlines
26 Mar - 02 Apr Southwest Airlines
28 Mar - 04 Apr Southwest Airlines
27 Mar - 13 Apr Southwest Airlines
27 Mar - 05 Apr Southwest Airlines

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

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