Cheapest return flights from Oakland to Portland in September from $244

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

Return flights

24 Sep - 01 Oct Spirit Airlines
30 Sep - 30 Sep Spirit Airlines
27 Sep - 17 Oct Alaska Airlines
25 Sep - 30 Sep Spirit Airlines
24 Sep - 01 Oct Hawaiian Airlines direct
29 Sep - 01 Oct Alaska Airlines direct
29 Sep - 05 Oct Alaska Airlines direct
30 Sep - 05 Oct Hawaiian Airlines direct
25 Sep - 03 Oct Spirit Airlines
24 Sep - 26 Sep Hawaiian Airlines direct
30 Sep - 30 Sep Hawaiian Airlines direct
26 Sep - 28 Sep Alaska Airlines
21 Sep - 24 Sep Alaska Airlines direct
26 Sep - 30 Sep Spirit Airlines
24 Sep - 25 Sep Hawaiian Airlines
26 Sep - 28 Sep Southwest Airlines direct
26 Sep - 03 Oct Spirit Airlines
21 Sep - 29 Sep Alaska Airlines direct
19 Sep - 03 Oct Spirit Airlines

Also check the deals for one-way 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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