AirHint found the following cheapest return flights from Mexico City (MEX) to San Juan (SJU) in September 2026 (see full year).
Return flights
| 09 Sep - 16 Sep | Arajet | ||
| 29 Sep - 20 Oct | Avianca | ||
| 11 Sep - 20 Sep | Avianca | ||
| 03 Sep - 13 Sep | Avianca | ||
| 01 Sep - 10 Sep | Avianca | ||
| 16 Sep - 25 Sep | Avianca |
Also check the deals for one-way flights from Mexico City to San Juan in September.
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