Cheapest return flights from Portland to Las Vegas in December from $108

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

Return flights

15 Dec - 18 Dec Frontier Airlines direct
11 Dec - 15 Dec Frontier Airlines
11 Dec - 14 Dec Frontier Airlines
14 Dec - 17 Dec Frontier Airlines
12 Dec - 15 Dec Frontier Airlines
06 Dec - 07 Dec Frontier Airlines
12 Dec - 14 Dec Frontier Airlines
16 Dec - 21 Dec Alaska Airlines direct
10 Dec - 15 Dec Alaska Airlines direct
09 Dec - 12 Dec Alaska Airlines direct
30 Dec - 01 Jan Frontier Airlines direct
16 Dec - 05 Jan Alaska Airlines direct
29 Dec - 01 Jan Alaska Airlines direct
31 Dec - 04 Jan Frontier Airlines
25 Dec - 04 Jan Frontier Airlines
28 Dec - 03 Jan Southwest Airlines
30 Dec - 03 Jan Southwest Airlines
31 Dec - 04 Jan Alaska Airlines direct
25 Dec - 04 Jan Frontier Airlines direct
30 Dec - 02 Jan Frontier Airlines

Also check the deals for one-way flights from Portland to Las Vegas in December.

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