Cheapest return flights from Portland (PDX) to San Francisco (SFO), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
30 Sep 03 Oct Alaska Airlines
Direct Flight
15 Sep 01 Oct Alaska Airlines
Direct Flight
19 Sep 23 Sep Alaska Airlines
Direct Flight
17 Sep 30 Sep Alaska Airlines
Direct Flight
16 Sep 19 Sep Alaska Airlines
Direct Flight
24 Sep 28 Sep Alaska Airlines
Direct Flight
15 Sep 17 Sep Alaska Airlines
Direct Flight
17 Sep 21 Sep Alaska Airlines
Direct Flight
25 Sep 28 Sep Alaska Airlines
Direct Flight
18 Sep 22 Sep United
Direct Flight
18 Sep 27 Sep Alaska Airlines
Direct Flight
15 Sep 20 Sep Alaska Airlines
Direct Flight
12 Sep 17 Oct United
Direct Flight
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deals for one-way flights from Portland to San Francisco in September.

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Updated Aug 26, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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