Cheapest return flights from Portland to Las Vegas in September from $136

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

Return flights

30 Sep - 03 Oct Spirit Airlines direct
24 Sep - 03 Oct Spirit Airlines direct
24 Sep - 01 Oct Spirit Airlines direct
27 Sep - 03 Oct Frontier Airlines
28 Sep - 03 Oct Spirit Airlines direct
29 Sep - 03 Oct Spirit Airlines direct
29 Sep - 01 Oct Spirit Airlines direct
25 Sep - 26 Sep Frontier Airlines direct
26 Sep - 26 Sep Frontier Airlines direct
27 Sep - 03 Oct Alaska Airlines direct
23 Sep - 03 Oct Spirit Airlines direct
23 Sep - 01 Oct Spirit Airlines direct
26 Sep - 29 Sep Frontier Airlines
26 Sep - 27 Sep Frontier Airlines
27 Sep - 29 Sep Frontier Airlines
26 Sep - 28 Sep Frontier Airlines
22 Sep - 29 Sep Frontier Airlines direct
25 Sep - 27 Sep Frontier Airlines
24 Sep - 29 Sep Spirit Airlines direct
24 Sep - 25 Sep Spirit Airlines direct

Also check the deals for one-way flights from Portland 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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