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

Return flights

26 Feb - 03 Mar	Avianca
03 Feb - 03 Mar	Avianca
10 Feb - 19 Feb	Avianca
28 Feb - 07 Mar	Avianca
21 Feb - 28 Feb	Avianca
02 Feb - 06 Feb	Southwest Airlines
05 Feb - 09 Feb	Southwest Airlines
02 Feb - 08 Feb	Southwest Airlines
27 Feb - 03 Mar	Southwest Airlines
28 Feb - 04 Mar	Southwest Airlines
07 Feb - 14 Feb	GOL Linhas Aéreas
12 Feb - 19 Feb	Avianca
21 Feb - 23 Feb	Avianca
08 Feb - 14 Feb	Southwest Airlines
06 Feb - 14 Feb	Southwest Airlines
27 Feb - 02 Mar	Southwest Airlines
20 Feb - 01 Mar	GOL Linhas Aéreas
20 Feb - 02 Mar	Southwest Airlines

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

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 Ontario to San Jose in February from $365

Return flights