Cheapest return flights from Portland to Las Vegas in May from $374

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

Return flights

14 May - 18 May Southwest Airlines
15 May - 17 May Alaska Airlines direct
14 May - 18 May Alaska Airlines direct

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

Skyscanner

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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