Cheapest return flights from Sioux Falls to Las Vegas in September from $122

AirHint found the following cheapest return flights from Sioux Falls (FSD) to Las Vegas (LAS) in September 2025 (see full year).

Return flights

08 Sep - 12 Sep Allegiant Air direct
01 Sep - 12 Sep Allegiant Air direct
08 Sep - 22 Sep Allegiant Air direct
01 Sep - 22 Sep Allegiant Air direct
12 Sep - 03 Oct Allegiant Air direct
05 Sep - 12 Sep Allegiant Air direct
19 Sep - 21 Sep Frontier Airlines
28 Sep - 02 Oct Frontier Airlines
12 Sep - 22 Sep Allegiant Air direct
05 Sep - 22 Sep Allegiant Air direct

Also check the deals for one-way flights from Sioux Falls to Las Vegas 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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