Cheapest one-way flights from Seattle to Las Vegas in December from $57

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

One-Way flights

31 Dec Alaska Airlines direct
13 Dec Frontier Airlines
30 Dec Frontier Airlines
15 Dec Frontier Airlines
12 Dec Frontier Airlines
17 Dec Delta direct
11 Dec Frontier Airlines
29 Dec Frontier Airlines
14 Dec Frontier Airlines
30 Dec Frontier Airlines direct

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

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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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