Cheapest return flights from Portland to Las Vegas in January from $124

AirHint found the following cheapest return flights from Portland (PDX) to Las Vegas (LAS) in January 2026 (see full year).

Return flights

08 Jan - 11 Jan Frontier Airlines
01 Jan - 05 Jan Frontier Airlines direct
01 Jan - 04 Jan Frontier Airlines
06 Jan - 09 Jan Southwest Airlines direct
08 Jan - 11 Jan Hawaiian Airlines direct
15 Jan - 19 Jan Frontier Airlines
17 Jan - 20 Jan Southwest Airlines direct
29 Jan - 03 Feb Southwest Airlines direct
15 Jan - 19 Jan Frontier Airlines direct
29 Jan - 31 Jan Southwest Airlines direct
01 Jan - 04 Jan Frontier Airlines direct
30 Jan - 01 Feb Southwest Airlines
30 Jan - 01 Feb Alaska Airlines direct

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

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