Cheapest return HOU–SJO flights, September

AirHint found the following cheapest return flights from Houston (HOU) to San Jose (SJO) in September 2026 (see full year).

Return flights

20 Sep - 24 Sep Southwest Airlines direct
23 Sep - 30 Sep Southwest Airlines direct
30 Sep - 05 Oct Frontier Airlines
14 Sep - 21 Sep jetBlue
24 Sep - 30 Sep United direct
21 Sep - 28 Sep United direct
30 Sep - 05 Oct United direct
14 Sep - 21 Sep Southwest Airlines direct
19 Sep - 25 Sep Southwest Airlines direct
04 Sep - 08 Sep United direct
11 Sep - 20 Sep Viva
07 Sep - 13 Sep Southwest Airlines direct

Also check the deals for one-way flights from Houston to San Jose in September.

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