Cheapest return flights from Portland to San Francisco in August from 161€

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

Return flights

25 Aug - 07 Sep Frontier Airlines
25 Aug - 08 Sep Frontier Airlines
28 Aug - 16 Sep Frontier Airlines
26 Aug - 02 Sep Frontier Airlines
20 Aug - 27 Aug Frontier Airlines
28 Aug - 16 Sep United direct
25 Aug - 07 Sep United direct
25 Aug - 08 Sep United direct
26 Aug - 01 Sep Frontier Airlines
29 Aug - 03 Sep Alaska Airlines
17 Aug - 23 Aug Frontier Airlines
28 Aug - 31 Aug Frontier Airlines
29 Aug - 03 Sep Alaska Airlines direct
29 Aug - 31 Aug United direct
28 Aug - 31 Aug United direct
22 Aug - 24 Aug United direct
23 Aug - 26 Aug United direct
25 Aug - 27 Aug United direct
25 Aug - 28 Aug United direct
20 Aug - 27 Aug United direct

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

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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