Cheapest one-way flights from Oakland to Portland in September from $136

AirHint found the following cheapest one-way flights from Oakland (OAK) to Portland (PDX) in September 2025 (see full year).

One-Way flights

24 Sep Spirit Airlines
27 Sep Alaska Airlines
28 Sep Alaska Airlines direct
24 Sep Alaska Airlines direct
26 Sep Alaska Airlines
26 Sep Alaska Airlines direct
21 Sep Alaska Airlines direct
19 Sep Alaska Airlines
19 Sep Southwest Airlines direct

Also check the deals for return flights from Oakland to Portland 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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