Cheapest return flights from Las Vegas to Porto in September from $717

AirHint found the following cheapest return flights from Las Vegas (LAS) to Porto (OPO) in September 2025 (see full year).

Return flights

29 Sep - 25 Oct Hawaiian Airlines
20 Sep - 23 Sep Spirit Airlines
28 Sep - 18 Oct Hawaiian Airlines
22 Sep - 18 Oct Hawaiian Airlines

Also check the deals for one-way flights from Las Vegas to Porto in September.

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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