AirHint found the following cheapest one-way flights from Sioux Falls (FSD) to San Juan (SJU) in September 2025 (see full year).
One-Way flights
| 30 Sep | United | ||
| 26 Sep | American Airlines | ||
| 27 Sep | United | ||
| 29 Sep | Allegiant Air | ||
| 05 Sep | Allegiant Air | ||
| 28 Sep | Delta |
Also check the deals for return flights from Sioux Falls to San Juan in September.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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