AirHint found the following cheapest return flights from San Francisco (SFO) to Paris (ORY) in September 2025 (see full year).

Return flights

30 Sep - 14 Oct	SWISS
26 Sep - 05 Oct	Frontier Airlines
22 Sep - 08 Oct	FrenchBee
22 Sep - 29 Sep	FrenchBee
27 Sep - 01 Oct	FrenchBee
25 Sep - 02 Oct	Frontier Airlines
22 Sep - 07 Oct	Lufthansa
21 Sep - 28 Sep	Alaska Airlines
22 Sep - 27 Sep	FrenchBee
21 Sep - 11 Oct	Air Canada
21 Sep - 07 Oct	SWISS
20 Sep - 27 Sep	Alaska Airlines
21 Sep - 24 Sep	Alaska Airlines
25 Sep - 29 Sep	Alaska Airlines
19 Sep - 22 Sep	Alaska Airlines
30 Sep - 25 Oct	Hawaiian Airlines
20 Sep - 11 Oct	FrenchBee
25 Sep - 28 Sep	Frontier Airlines
19 Sep - 26 Sep	Alaska Airlines
26 Sep - 29 Sep	Alaska Airlines

Also check the deals for one-way flights from San Francisco to Paris in September.

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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Cheapest return flights from San Francisco to Paris in September from $602

Return flights