AirHint found the following cheapest return flights from Barcelona (BCN) to San Juan (SJU) in September 2026 (see full year).
Return flights
| 01 Sep - 10 Sep | United | ||
| 26 Sep - 03 Oct | United | ||
| 01 Sep - 08 Sep | United | ||
| 04 Sep - 11 Sep | KLM |
Also check the deals for one-way flights from Barcelona to San Juan in September.
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