AirHint found the following cheapest return flights from Naples (NAP) to San Juan (SJU) in September 2026 (see full year).
Return flights
| 03 Sep - 07 Sep | Iberia Express | ||
| 04 Sep - 13 Sep | United | ||
| 01 Sep - 07 Sep | Iberia Express | ||
| 01 Sep - 08 Sep | United | ||
| 07 Sep - 11 Sep | Iberia Express |
Also check the deals for one-way flights from Naples to San Juan in September.
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