Cheapest one-way flights from Sioux Falls to San Juan in September from $87

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.

Skyscanner

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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