Cheapest return flights from Portland to Las Vegas in December from $103

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

Return flights

01 Dec - 05 Dec Frontier Airlines direct
01 Dec - 04 Dec Frontier Airlines
14 Dec - 18 Dec Frontier Airlines direct
07 Dec - 10 Dec Frontier Airlines
12 Dec - 15 Dec Frontier Airlines
06 Dec - 07 Dec Frontier Airlines
11 Dec - 14 Dec Frontier Airlines
09 Dec - 12 Dec Alaska Airlines direct
07 Dec - 10 Dec Frontier Airlines direct
11 Dec - 13 Dec Frontier Airlines
30 Dec - 05 Jan Frontier Airlines direct
16 Dec - 05 Jan Hawaiian Airlines direct
25 Dec - 01 Jan Frontier Airlines
25 Dec - 01 Jan Frontier Airlines direct
30 Dec - 03 Jan Frontier Airlines
30 Dec - 03 Jan Frontier Airlines direct
26 Dec - 04 Jan Hawaiian Airlines
26 Dec - 04 Jan Alaska Airlines direct
26 Dec - 02 Jan Hawaiian Airlines
26 Dec - 03 Jan Hawaiian Airlines

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

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