Cheapest return flights from Portland to Las Vegas in December from $117

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

Return flights

25 Dec - 12 Jan Frontier Airlines direct
09 Dec - 12 Dec Alaska Airlines direct
17 Dec - 23 Dec Alaska Airlines direct
25 Dec - 28 Dec Frontier Airlines direct
07 Dec - 11 Dec Frontier Airlines direct
16 Dec - 05 Jan Alaska Airlines direct
23 Dec - 27 Dec Frontier Airlines direct
24 Dec - 28 Dec Frontier Airlines direct
05 Dec - 08 Dec Frontier Airlines
25 Dec - 30 Dec Southwest Airlines direct
09 Dec - 14 Dec Southwest Airlines direct
24 Dec - 27 Dec Alaska Airlines direct
25 Dec - 04 Jan Frontier Airlines direct
30 Dec - 03 Jan Frontier Airlines direct
29 Dec - 03 Jan Alaska Airlines direct
22 Dec - 04 Jan Frontier Airlines direct
20 Dec - 04 Jan Alaska Airlines direct
26 Dec - 02 Jan Southwest Airlines direct
26 Dec - 03 Jan Alaska Airlines direct
26 Dec - 04 Jan Frontier Airlines direct

Also check the deals for one-way flights from Portland 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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