AirHint found the following cheapest one-way flights from Seattle (SEA) to Las Vegas (LAS) in October 2025 (see full year).

One-Way flights

05 Oct	Frontier Airlines	direct
24 Oct	Frontier Airlines	direct
13 Oct	Frontier Airlines	direct
12 Oct	Frontier Airlines	direct
09 Oct	Frontier Airlines	direct
25 Oct	Hawaiian Airlines	direct
01 Oct	Hawaiian Airlines	direct
03 Oct	Frontier Airlines
10 Oct	Frontier Airlines
17 Oct	Frontier Airlines

Also check the deals for return flights from Seattle to Las Vegas in October.

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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Cheapest one-way flights from Seattle to Las Vegas in October from 34€

One-Way flights