AirHint found the following cheapest return flights from Monterrey (MTY) to San Jose (SJO) in September 2026 (see full year).
Return flights
| 25 Sep - 29 Sep | Viva | direct | |
| 18 Sep - 29 Sep | Viva | direct | |
| 18 Sep - 22 Sep | Viva | direct | |
| 07 Sep - 22 Sep | Viva | direct | |
| 25 Sep - 13 Oct | Viva | direct | |
| 07 Sep - 12 Sep | Viva | direct | |
| 02 Sep - 09 Sep | Aeromexico |
Also check the deals for one-way flights from Monterrey to San Jose in September.
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