Cheapest return SEA–LAS flights, September

AirHint found the following cheapest return flights from Seattle (SEA) to Las Vegas (LAS) in September 2026 (see full year).

Return flights

03 Sep - 07 Sep Frontier Airlines
20 Sep - 24 Sep Frontier Airlines direct
02 Sep - 07 Sep Frontier Airlines
04 Sep - 07 Sep Frontier Airlines
02 Sep - 08 Sep Delta direct
03 Sep - 07 Sep Frontier Airlines direct
03 Sep - 06 Sep Frontier Airlines direct
16 Sep - 19 Sep Delta direct
02 Sep - 19 Sep Delta direct
02 Sep - 07 Sep Delta direct

Also check the deals for one-way flights from Seattle to Las Vegas in September.

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