Cheapest return flights from Portland to San Francisco in October from 134€

AirHint found the following cheapest return flights from Portland (PDX) to San Francisco (SFO) in October 2025 (see full year).

Return flights

23 Oct - 30 Oct Frontier Airlines
23 Oct - 26 Oct Frontier Airlines
20 Oct - 23 Oct Frontier Airlines
31 Oct - 01 Nov Frontier Airlines
31 Oct - 02 Nov Frontier Airlines
28 Oct - 30 Nov United direct
31 Oct - 01 Nov United direct
31 Oct - 02 Nov United direct
30 Oct - 03 Nov United direct
25 Oct - 26 Oct Frontier Airlines
24 Oct - 29 Oct Hawaiian Airlines direct
25 Oct - 26 Oct Hawaiian Airlines direct
23 Oct - 29 Oct Frontier Airlines
25 Oct - 25 Oct United direct
24 Oct - 26 Oct United direct
26 Oct - 28 Oct Alaska Airlines direct

Also check the deals for one-way flights from Portland to San Francisco in October.

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